MAX9718AETB+T - Maxim Integrated

General Description

The MAX9718/MAX9719 differential input audio power

amplifiers are ideal for portable audio devices with

internal speakers. The differential input structure

improves noise rejection and provides common-mode

rejection. A bridge-tied load (BTL) architecture mini-

mizes external component count, while providing high-

quality, power audio amplification. The MAX9718 is a

single-channel amplifier while the MAX9719 is a dual-

channel amplifier for stereo systems. Both devices

deliver 1.4W continuous average power per channel to

a 4Ωload with less than 1% THD+N while operating

from a single +5V supply. The devices are available as

adjustable gain amplifiers or with internally fixed gains

of 0dB, 3dB, and 6dB to reduce component count.

A shutdown input disables the bias generator and

amplifiers and reduces quiescent current consumption

to less than 100nA. The MAX9718 shutdown input can

be set as active high or active low. These devices fea-

ture Maxim’s comprehensive click-and-pop suppres-

sion circuitry that reduces audible clicks and pops

during startup and shutdown.

The MAX9718 is pin compatible with the LM4895,

and is available in 9-bump UCSP™, 10-pin TDFN, and

10-pin μMAX®packages. The MAX9719 is available in

16-pin TQFN, 16-pin TSSOP, and 16-bump UCSP pack-

ages. Both devices operate over the -40°C to +85°C

extended temperature range.

Applications

Mobile Phones

PDAs

Portable Devices

Features

o2.7V to 5.5V Single-Supply Operation

oVery High -93dB PSRR at 217Hz

o1.4W into 4Ωat 1% THD+N (per Channel)

oDifferential Input

oInternal Fixed Gain to Reduce Component Count

oAdjustable Gain Option (MAX9718A/H/MAX9719A)

o100nA Low-Power Shutdown Mode

oNo Audible Clicks or Pops at Power-Up/Down

oImproved Performance Pin-Compatible Upgrade

to LM4895 (MAX9718D/G)

o1.8V Logic Compatible

MAX9718/MAX9719

Low-Cost, Mono/Stereo,

1.4W Differential Audio Power Amplifiers

________________________________________________________________

Maxim Integrated Products

Ordering Information

MAX9719

SINGLE SUPPLY

2.7V TO 5.5V

SHDN

INL+

INL-

INR+

INR-

MAX9718

SINGLE SUPPLY

2.7V TO 5.5V

SHDM

SHDN

IN+ OUT+

OUT-

OUTR-

OUTR+

OUTL-

OUTL+

IN-

Simplified Block Diagrams

19-3050; Rev 7; 4/10

For pricing delivery, and ordering information please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

Ordering Information continued at end of data sheet.

Pin Configurations appear at end of data sheet.

EVALUATION KIT

AVAILABLE

UCSP is a trademark of Maxim Integrated Products, Inc.

μMAX is a registered trademark of Maxim Integrated Products, Inc.

PART TEMP RANGE PIN-

PACKAGE

T O P

M A R K

M A X9 7 1 8 AE BL+ TG 45 -40°C to +85°C 3 x 3 UCSP +ADX

MAX9718AETB+T -40°C to +85°C 10 TDFN-EP* +AAV

Denotes lead(Pb)-free/RoHS-compliant package.

EP = Exposed pad.

G45 indicates protective die coating.

MAX9718/MAX9719

Low-Cost, Mono/Stereo,

1.4W Differential Audio Power Amplifiers

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS—5V Supply

(VCC = 5V, GND = 0, SHDN/SHDN = VCC (MAX9718/MAX9719), SHDM = GND (MAX9718), RIN = RF= 10kΩ(MAX971_A/H),

TA= +25°C. CBIAS = 0.1μF, no load. Typical values are at TA= +25°C, unless otherwise noted.) (Note 1)

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional

operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to

absolute maximum rating conditions for extended periods may affect device reliability.

Supply Voltage (VCC to GND) ..................................-0.3V to +6V

Any Other Pin to GND ...............................-0.3V to (VCC + 0.3V)

IN_, BIAS, SHDM, SHDN, SHDN Continuous Current ........20mA

OUT_ Short-Circuit Duration to GND or VCC .............Continuous

Continuous Power Dissipation (TA= +70°C)

9-Bump UCSP (derate 5.2mW/°C above +70°C) .......1067mW

10-Pin TDFN (derate 24.4mW/°C above +70°C) ........1951mW

10-Pin μMAX (derate 10.3mW/°C above +70°C) ..........825mW

16-Bump UCSP (derate 8.2mW/°C above +70°C) .....1633mW

16-Pin TQFN (derate 16.9mW/°C above +70°C) ........1349mW

16-Pin TSSOP (derate 21.3mW/°C above +70°C) ......1702mW

Operating Temperature Range ...........................-40°C to +85°C

Junction Temperature .....................................................+150°C

Storage Temperature Range .............................-65°C to +150°C

Lead Temperature (soldering, 10s) .................................+300°C

Soldering Temperature (reflow) .......................................+260°C

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Supply Voltage VCC 2.7 5.5 V

Supply Current ICC VIN- = VIN+ = VBIAS, TA = -40°C to +85°C,

per amplifier (Note 2) 5.0 7.5 mA

Shutdown Supply Current ISHDN SHDN = SHDM = SHDN = GND, per amplifier 0.1 1 μA

VIH 0.7 x VCC

SHDN, SHDN, SHDM

Threshold VIL MAX9718A/B/C/D 0.3 x VCC

VIH 1.4

SHDN, SHDN, SHDM

Threshold VIL

MAX9718E/F/G/H 0.4 V

AV = 0dB, MAX971_A/H,

MAX971_B/E ±1 ±10

AV = 3dB, MAX971_C/F ±1 ±15

Output Offset Voltage VOS VIN- = VIN+ = VBIAS

AV = 6dB, MAX971_D/G ±1 ±20

AV = 0dB, MAX971_B/E 0.5 V

CC - 0.5

AV = 3dB, MAX971_C/F 0.5 V

CC - 0.6

Inferred from

CMRR test AV = 6dB, MAX971_D/G 0.5 V

CC - 0.8

Common-Mode Input Voltage VIC

External gain, MAX971_A/H 0.5 VCC - 1.2

Input Impedance RIN MAX971_B/E, MAX971_C/F, MAX971_D/G 10 15 20 kΩ

-50 -60

Common-Mode Rejection Ratio CMRR fN = 1kHz -60 dB

f = 217Hz -93

Power-Supply Rejection Ratio PSRR

IN- = V

IN+ = V

BIAS,

RIPPLE = 200m V

P-P,

RL = 8Ω , C

BIAS = 1μF f = 1kHz -90

RL = 8Ω0.8 1.1

Output Power POUT THD+N = 1%,

fIN = 1kHz (Note 4) RL = 4Ω1.4 W

Total Harmonic Distortion Plus

Noise THD+N RL = 8Ω, fIN = 1kHz, POUT = 0.75W,

VCC = 5V, AV = 6dB (Note 5) 0.002 %

MAX9718/MAX9719

Low-Cost, Mono/Stereo,

1.4W Differential Audio Power Amplifiers

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS—5V Supply (continued)

(VCC = 5V, GND = 0, SHDN/SHDN = VCC (MAX9718/MAX9719), SHDM = GND (MAX9718), RIN = RF= 10kΩ(MAX971_A/H),

TA= +25°C. CBIAS = 0.1μF, no load. Typical values are at TA= +25°C, unless otherwise noted.) (Note 1)

ELECTRICAL CHARACTERISTICS—3V Supply

(VCC = 3V, GND = 0, SHDN/SHDN = VCC (MAX9718/MAX9719), SHDM = GND (MAX9718), RIN = RF= 10kΩ(MAX971_A/H),

TA= +25°C. CBIAS = 0.1μF, no load. Typical values are at TA= +25°C, unless otherwise noted.) (Note 1)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Gain Accuracy MAX971_B/E, MAX971_C/F, MAX971_D/G ±1 %

Channel-to-Channel Gain

Matching MAX9719B/E, MAX9719C/F, MAX9719D/G ±1 %

Signal-to-Noise Ratio SNR POUT = 1W, RL = 8Ω-104 dB

Thermal-Shutdown Threshold +160 °C

Thermal-Shutdown Hysteresis 15 °C

Maximum Capacitive Drive CLOAD Bridge-tied capacitance 500 pF

Power-Up/Enable from

Shutdown Time tPU 10 ms

Shutdown Time tSHDN 3.5 μs

Turn-Off Transient VPOP (Note 6) 50 mV

Crosstalk MAX9719, fIN = 1kHz -85 dB

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Supply Current ICC VIN- = VIN+ = VBIAS, TA = -40°C to +85°C,

per amplifier (Note 2) 3.8 6.0 mA

Shutdown Supply Current ISHDN SHDN = SHDM = SHDN = GND, per amplifier 0.1 1 μA

VIH 0.7 x V

SHDN, SHDN, SHDM

Threshold VIL 0.3 x V

Common-Mode Bias Voltage VBIAS (Note 3) VCC/2

- 5% VCC/2 VCC/2

+ 5% V

AV = 0dB, MAX971_A/H

MAX971_B/E ±1 ±10

AV = 3dB, MAX971_C/F ±1 ±15

Output Offset Voltage VOS VIN- = VIN+ = VBIAS

AV = 6dB, MAX971_D/G ±1 ±20

AV = 0dB, MAX971_B/E 0.5 V

CC - 0.7

AV = 3dB, MAX971_C/F 0.5 V

CC - 0.8

Inferred from

CMRR test AV = 6dB, MAX971_D/G 0.5 V

CC - 1.0

Common-Mode Input Voltage VIC

External gain, MAX971_A/H 0.5 V

CC - 1.2

Input Impedance RIN MAX971_B/E, MAX971_C/F, MAX971_D/G 10 15 20 kΩ

-50 -60

Common-Mode Rejection Ratio CMRR fN = 1kHz -70 dB

f = 217Hz -93

Power-Supply Rejection Ratio PSRR

IN- = V

IN+ = V

BIAS,

RIPPLE = 200m V

P-P,

RL = 8Ω ,

BIAS = 1μF f = 1kHz -90

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. FREQUENCY

MAX9718 toc01

FREQUENCY (Hz)

THD+N (%)

100 1k 10k

0.001

0.01

0.1

0.0001

10 100k

OUTPUT POWER = 1W

OUTPUT POWER = 50mW

VCC = 5V

RL = 4Ω

AV = 2

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. FREQUENCY

MAX9718 toc02

FREQUENCY (Hz)

THD+N (%)

100 1k 10k

0.001

0.01

0.1

0.0001

10 100k

VCC = 5V

RL = 4Ω

AV = 4

OUTPUT POWER = 1W

OUTPUT POWER = 200mW

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. FREQUENCY

MAX9718 toc03

FREQUENCY (Hz)

THD+N (%)

100 1k 10k

0.001

0.01

0.1

0.0001

10 100k

VCC = 5V

RL = 8Ω

AV = 2

OUTPUT POWER = 250mW

OUTPUT POWER = 750mW

Typical Operating Characteristics

(VCC = 5V, CBIAS = 0.1μF, THD+N measurement bandwidth = 22Hz to 22kHz, TA= +25°C, unless otherwise noted.)

Note 1: All specifications are 100% tested at TA= +25°C. Specifications over temperature (TA= TMIN to TMAX) are guaranteed by

design, not production tested.

Note 2: Quiescent power-supply current is specified and tested with no load. Quiescent power-supply current depends on the offset

voltage when a practical load is connected to the amplifier. Guaranteed by design.

Note 3: Common-mode bias voltage is the voltage on BIAS and is nominally VCC/2.

Note 4: Output power is specified by a combination of a functional output current test and characterization analysis.

Note 5: Measurement bandwidth for THD+N is 22Hz to 22kHz.

Note 6: Peak voltage measured at power-on, power-off, into or out of SHDN. Bandwidth defined by A-weighted filters, inputs at AC

GND. VCC rise and fall times greater than or equal to 1ms.

MAX9718/MAX9719

Low-Cost, Mono/Stereo,

1.4W Differential Audio Power Amplifiers

4 _______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS—3V Supply (continued)

(VCC = 3V, GND = 0, SHDN/SHDN = VCC (MAX9718/MAX9719), SHDM = GND (MAX9718), RIN = RF= 10kΩ(MAX971_A/H),

TA= +25°C. CBIAS = 0.1μF, no load. Typical values are at TA= +25°C, unless otherwise noted.) (Note 1)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Output Power POUT RL = 8Ω, THD+N = 1%, fIN = 1kHz (Note 4) 475 mW

Total Harmonic Distortion Plus

Noise THD+N RL = 8Ω, fIN = 1kHz, POUT = 0.25W,

AV = 6dB 0.003 %

Thermal-Shutdown Threshold +160 °C

Thermal-Shutdown Hysteresis 15 °C

Maximum Capacitive Drive CLOAD Bridge-tied capacitance 500 pF

Power-Up/Enable from

Shutdown Time tPU 10 ms

Shutdown Time tSHDN 3μs

Turn-Off Transient VPOP (Note 6) 40 mV

Crosstalk MAX9719, fIN = 1kHz -85 dB

MAX9718/MAX9719

Low-Cost, Mono/Stereo,

1.4W Differential Audio Power Amplifiers

_______________________________________________________________________________________ 5

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. FREQUENCY

MAX9718 toc04

FREQUENCY (Hz)

THD+N (%)

100 1k 10k

0.001

0.01

0.1

0.0001

10 100k

VCC = 5V

RL = 8Ω

AV = 4

OUTPUT POWER = 200mW

OUTPUT POWER = 800mW

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. FREQUENCY

MAX9718 toc05

FREQUENCY (Hz)

THD+N (%)

100 1k 10k

0.001

0.01

0.1

0.0001

10 100k

VCC = 3V

RL = 4Ω

AV = 2

OUTPUT POWER = 250mW

OUTPUT POWER = 50mW

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. FREQUENCY

MAX9718 toc06

FREQUENCY (Hz)

THD+N (%)

100 1k 10k

0.001

0.01

0.1

0.0001

10 100k

VCC = 3V

RL = 4Ω

AV = 4

OUTPUT POWER = 70mW

OUTPUT POWER = 175mW

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. FREQUENCY

MAX9718 toc07

FREQUENCY (Hz)

THD+N (%)

100 1k 10k

0.001

0.01

0.1

0.0001

10 100k

VCC = 3V

RL = 8Ω

AV = 2

OUTPUT POWER = 250mW

OUTPUT POWER = 100mW

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. FREQUENCY

MAX9718 toc08

FREQUENCY (Hz)

THD+N (%)

100 1k 10k

0.001

0.01

0.1

0.0001

10 100k

VCC = 3V

RL = 8Ω

AV = 4

OUTPUT POWER = 200mW

OUTPUT POWER = 50mW

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. OUTPUT POWER

MAX9718 toc09

OUTPUT POWER (W)

THD+N (%)

0.2 0.4 0.6 0.8 1.2 1.41.0 1.8

0.01

0.1

100

0.001

02.0

fIN = 1kHz

fIN = 100Hz

fIN = 10kHz

1.6

VCC = 5V

RL = 4Ω

AV = 2

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. OUTPUT POWER

MAX9718 toc10

OUTPUT POWER (W)

THD+N (%)

0.5 1.51.0

0.01

0.1

100

0.001

02.0

fIN = 1kHz

fIN = 100Hz

fIN = 10kHz

VCC = 5V

RL = 4Ω

AV = 4

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. OUTPUT POWER

MAX9718 toc11

OUTPUT POWER (W)

THD+N (%)

0.2 0.6 0.8 1.0 1.20.4

0.01

0.1

100

0.001

0 1.4

fIN = 1kHz

fIN = 100Hz fIN = 10kHz

VCC = 5V

RL = 8Ω

AV = 2

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. OUTPUT POWER

MAX9718 toc12

OUTPUT POWER (W)

THD+N (%)

0.2 0.6 0.8 1.0 1.20.4

0.01

0.1

100

0.001

0 1.4

fIN = 100Hz

fIN = 1kHz

fIN = 10kHz

VCC = 5V

RL = 8Ω

AV = 4

Typical Operating Characteristics (continued)

(VCC = 5V, CBIAS = 0.1μF, THD+N measurement bandwidth = 22Hz to 22kHz, TA= +25°C, unless otherwise noted.)

MAX9718/MAX9719

Low-Cost, Mono/Stereo,

1.4W Differential Audio Power Amplifiers

6 _______________________________________________________________________________________

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. OUTPUT POWER

MAX9718 toc13

OUTPUT POWER (mW)

THD+N (%)

100 300 400 500200

0.01

0.1

100

0.001

0600

fIN = 10kHz

fIN = 1kHz fIN = 100Hz

VCC = 3V

RL = 4Ω

AV = 2

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. OUTPUT POWER

MAX9718 toc14

OUTPUT POWER (mW)

THD+N (%)

100 300 400 500200

0.01

0.1

100

0.001

0600

fIN = 1kHz

fIN = 100Hz

fIN = 10kHz

VCC = 3V

RL = 4Ω

AV = 4

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. OUTPUT POWER

MAX9718 toc15

OUTPUT POWER (mW)

THD+N (%)

100 300 400 500200

0.01

0.1

100

0.001

0600

fIN = 1kHz

fIN = 100Hz

fIN = 10kHz

VCC = 3V

RL = 8Ω

AV = 2

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. OUTPUT POWER

MAX9718 toc16

OUTPUT POWER (mW)

THD+N (%)

100 300 400 500200

0.01

0.1

100

0.001

fIN = 1kHz

fIN = 100Hz

fIN = 10kHz

VCC = 3V

RL = 8Ω

AV = 4

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. COMMON-MODE VOLTAGE

MAX9718 toc17

COMMON-MODE VOLTAGE (V)

THD+N (%)

13452

0.001

0.01

0.0001

VCC = 5V

PO = 200mW

AV = 2

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. COMMON-MODE VOLTAGE

MAX9718 toc18

COMMON-MODE VOLTAGE (V)

THD+N (%)

0.5 1.5 2.0 2.5 3.01.0

0.001

0.01

0.0001

VCC = 3V

PO = 200mW

AV = 2

OUTPUT POWER

vs. SUPPLY VOLTAGE

MAX9718 toc19

SUPPLY VOLTAGE (V)

OUTPUT POWER

5.04.54.03.53.0

0.5

1.0

1.5

2.0

2.5

2.5 5.5

RL = 4Ω

f = 1kHz

AV = 2

THD+N = 10%

THD+N = 1%

OUTPUT POWER

vs. SUPPLY VOLTAGE

MAX9718 toc20

SUPPLY VOLTAGE (V)

OUTPUT POWER (W)

5.04.54.03.53.0

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

2.5 5.5

RL = 8Ω

f = 1kHz

AV = 2

THD+N = 10%

THD+N = 1%

OUTPUT POWER

vs. LOAD RESISTANCE

MAX9718 toc21

LOAD RESISTANCE (Ω)

OUTPUT POWER (W)

10010

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

2.0

VCC = 5V

f = 1kHz

AV = 2

THD+N = 10%

THD+N = 1%

Typical Operating Characteristics (continued)

(VCC = 5V, CBIAS = 0.1μF, THD+N measurement bandwidth = 22Hz to 22kHz, TA= +25°C, unless otherwise noted.)

MAX9718/MAX9719

GAIN AND PHASE

vs. FREQUENCY

MAX9718 toc27

FREQUENCY (Hz)

GAIN/PHASE (°/dB)

10k1k100

-120

-90

-60

-30

120

150

-150

10 100k

AV = 60dB

Low-Cost, Mono/Stereo,

1.4W Differential Audio Power Amplifiers

_______________________________________________________________________________________ 7

OUTPUT POWER

vs. LOAD RESISTANCE

MAX9718 toc22

LOAD RESISTANCE (Ω)

OUTPUT POWER (mW)

10010

200

100

300

400

500

600

THD+N = 10%

THD+N = 1%

VCC = 3V

f = 1kHz

AV = 2

POWER DISSIPATION

vs. OUTPUT POWER

MAX9718 toc23

OUTPUT POWER (W)

POWER DISSIPATION (W)

1.51.20.90.60.3

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

0 1.8

VCC = 5V

RL = 4Ω

f = 1kHz

AV = 2

POWER DISSIPATION

vs. OUTPUT POWER

MAX9718 toc24

OUTPUT POWER (W)

POWER DISSIPATION (W)

1.21.00.80.60.40.2

0.2

0.4

0.6

0.8

1.0

0 1.4

VCC = 5V

RL = 8Ω

f = 1kHz

AV = 2

POWER DISSIPATION

vs. OUTPUT POWER

MAX9718 toc25

OUTPUT POWER (mW)

POWER DISSIPATION (mW)

600500400300200100

100

200

300

400

500

600

700

0700

VCC = 3V

RL = 4Ω

f = 1kHz

AV = 2

POWER DISSIPATION

vs. OUTPUT POWER

MAX9718 toc26

OUTPUT POWER (mW)

POWER DISSIPATION (mW)

400300200100

100

150

200

250

300

350

0500

VCC = 3V

RL = 8Ω

f = 1kHz

AV = 2

POWER-SUPPLY REJECTION RATIO

vs. FREQUENCY

MAX9718 toc28

FREQUENCY (Hz)

PSRR (dB)

10k1k100

-90

-80

-70

-60

-50

-40

-30

-20

-10

-100

10 100k

VRIPPLE = 200mVP-P

RL = 8Ω

CBIAS = 1μF

VCC = 5V

VCC = 3V

COMMON-MODE REJECTION RATIO

vs. FREQUENCY

MAX9718 toc29

FREQUENCY (Hz)

CMRR (dB)

10k1k100

-90

-80

-70

-60

-50

-40

-30

-20

-10

-100

10 100k

VRIPPLE = 200mVP-P

RL = 8Ω

CBIAS = 1μF

VCC = 5V

VCC = 3V

Typical Operating Characteristics (continued)

(VCC = 5V, CBIAS = 0.1μF, THD+N measurement bandwidth = 22Hz to 22kHz, TA= +25°C, unless otherwise noted.)

MAX9718/MAX9719

Low-Cost, Mono/Stereo,

1.4W Differential Audio Power Amplifiers

8 _______________________________________________________________________________________

Typical Operating Characteristics (continued)

(VCC = 5V, CBIAS = 0.1µF, THD+N measurement bandwidth = 22Hz to 22kHz, TA= +25°C, unless otherwise noted.)

CROSSTALK

vs. FREQUENCY

MAX9718 toc31

FREQUENCY (Hz)

CROSSTALK (dB)

10k1k100

-90

-80

-70

-60

-50

-40

-30

-20

-10

-100

-110

-120

10 100k

CHANNEL 2

CHANNEL 1

VCC = 3V

VRIPPLE = 200mVP-P

RL = 8Ω

CBIAS = 1μF

ENTERING SHUTDOWN

MAX9718 toc32

100μs/div

CBIAS = 0.1μF

VCC = 3V

RL = 8ΩSHDN

2V/div

OUT+

1V/div

OUT-

1V/div

OUT+ - OUT-

200mV/div

EXITING SHUTDOWN

MAX9718 toc33

4ms/div

CBIAS = 0.1μF

VCC = 3V

RL = 8Ω

SHDN

2V/div

OUT+

1V/div

OUT-

1V/div

OUT+ - OUT-

200mV/div

ENTERING POWER-DOWN

MAX9718 toc34

100μs/div

CBIAS = 0.1μF

VCC = 3V

RL = 8ΩSHDN

1V/div

OUT+

1V/div

OUT-

1V/div

OUT+ - OUT-

200mV/div

EXITING POWER-DOWN

MAX9718 toc35

SHDN

2V/div

OUT+

1V/div

OUT-

1V/div

4ms/div

CBIAS = 0.1μF

VCC = 3V

RL = 8Ω

OUT+ - OUT-

200mV/div

CROSSTALK

vs. FREQUENCY

MAX9718 toc30

FREQUENCY (Hz)

CROSSTALK (dB)

10k1k100

-90

-80

-70

-60

-50

-40

-30

-20

-10

-100

-110

-120

10 100k

CHANNEL 2

CHANNEL 1

VCC = 5V

VRIPPLE = 200mVP-P

RL = 8Ω

CBIAS = 1μF

MAX9718/MAX9719

TURN-ON TIME

vs. DC BIAS BYPASS CAPACITOR

MAX9718 toc38

CBIAS (μF)

TURN-ON TIME (ms)

0.800.600.20 0.40

0 1.00

VCC = 5V

VCC = 3V

TO -3dB OF FINAL VALUE

Low-Cost, Mono/Stereo,

1.4W Differential Audio Power Amplifiers

_______________________________________________________________________________________ 9

SHUTDOWN CURRENT

vs. TEMPERATURE

MAX9718 toc37

TEMPERATURE (°C)

SHUTDOWN CURRENT (μA)

603510-15

-0.02

-0.01

0.01

0.02

0.03

-0.03

-40 85

VCC = 5V

VCC = 3V

Typical Operating Characteristics (continued)

(VCC = 5V, CBIAS = 0.1μF, THD+N measurement bandwidth = 22Hz to 22kHz, TA= +25°C, unless otherwise noted.)

Pin Description

MAX9718 MAX9719

TDFN-EP/

µMAX UCSP TQFN-EP UCSP TSSOP-EP

NAME FUNCTION

1 C2 — — — SHDN Shutdown Input. The polarity of SHDN is dependent on the

state of SHDM.

——9B311SHDN Shutdown Input. Active-low shutdown input.

2 C1 — — — IN- Inverting Input

3 B2 — — — SHDM

Shutdown-Mode Polarity Input. SHDM controls the polarity

of SHDN. Connect SHDM high for an active-high SHDN

input. Connect SHDM low for an active-low SHDN input

(

see Table 1

)

4 A1 — — — IN+ Noninverting Input

5 A2 5 B2 7 BIAS DC Bias Bypass

6 A3 — — — OUT- Bridge Amplifier Negative Output

7 B3 1, 6, 11 A2, C2,

C4 3, 8, 13 GND Ground

8 — 13 — 15 N.C. No Connection. Not internally connected.

9 B1 8, 14 A4, D3 16, 10 VCC Power Supply

10 C3 — — — OUT+ Bridge Amplifier Positive Output

— — 2 C1 4 INR+ Right-Channel Noninverting Input

— — 3 B1 5 INL- Left-Channel Inverting Input

— — 4 A1 6 INL+ Left-Channel Noninverting Input

— — 7 A3 9 OUTL+ Left-Channel Bridge Amplifier Positive Output

SUPPLY CURRENT

vs. TEMPERATURE

MAX9718 toc36

TEMPERATURE (°C)

SUPPLY CURRENT (mA)

603510-15

-40 85

VCC = 5V

VCC = 3V

MAX9718/MAX9719

Low-Cost, Mono/Stereo,

1.4W Differential Audio Power Amplifiers

10 ______________________________________________________________________________________

Pin Description (continued)

TDFN-EP/

µMAX UCSP TQFN-EP UCSP TSSOP-EP NAME FUNCTION

— — 10 B4 12 OUTL- Left-Channel Bridge Amplifier Negative Output

— — 12 D4 14 OUTR+ Right-Channel Bridge Amplifier Positive Output

— — 15 D2 1 OUTR- Right-Channel Bridge Amplifier Negative Output

— — 16 D1 2 INR- Right-Channel Inverting Input

—————EP

Exposed Pad. Connect EP to GND.

Detailed Description

The MAX9718/MAX9719 are 1.4W BTL speaker ampli-

fiers. The MAX9718 is a mono speaker amplifier, while

the MAX9719 is a stereo speaker amplifier. Both

devices feature a low-power shutdown mode and indus-

try-leading click-and-pop suppression. The MAX9718

features a two-input shutdown scheme to configure

shutdown for active high or active low. These devices

consist of high output-current audio amps configured as

BTL amplifiers (see the

Functional Diagrams

). Both

adjustable and fixed gain (0dB, 3dB, 6dB) versions are

available.

BIAS

These devices operate from a single 2.7V to 5.5V sup-

ply and feature an internally generated, common-mode

bias voltage of VCC/2 referenced to ground. BIAS pro-

vides both click-and-pop suppression and sets the DC

bias level for the audio outputs. Choose the value of the

bypass capacitor as described in the

BIAS Capacitor

section. Do not connect external loads to BIAS as this

can affect the overall performance.

Shutdown Mode

The MAX9718/MAX9719 feature a 100nA low-power

shutdown mode that reduces quiescent current con-

sumption. Entering shutdown disables the device’s bias

circuitry, the amplifier outputs go high impedance, and

BIAS is driven to GND. The MAX9718 SHDM input con-

trols the polarity of SHDN. Drive SHDM high for an

active-high SHDN input. Drive SHDM low for an active-

low SHDN input (see Table 1). The MAX9719 features

an active-low shutdown input, SHDN.

Click-and-Pop Suppression

The MAX9718/MAX9719 feature Maxim’s industry-lead-

ing click-and-pop suppression circuitry. During startup,

the amplifier common-mode bias voltage ramps to the

DC bias point. When entering shutdown, the amplifier

outputs are high impedance to 100kΩbetween both

outputs. This scheme minimizes the energy present in

the audio band.

Applications Information

BTL Amplifier

The MAX9718/MAX9719 are designed to drive a load

differentially, a configuration referred to as bridge-tied

load or BTL. The BTL configuration (Figure 1) offers

advantages over the single-ended configuration, where

one side of the load is connected to ground. Driving the

load differentially doubles the output voltage compared

to a single-ended amplifier under similar conditions.

Substituting 2 x VOUT(P-P) for VOUT(P-P) into the following

equations yields four times the output power due to

doubling of the output voltage:

Since the differential outputs are biased at midsupply,

there is no net DC voltage across the load. This elimi-

nates the need for DC-blocking capacitors required for

single-ended amplifiers. These capacitors can be

large, expensive, consume board space, and degrade

low-frequency performance.

OUT RMS

RMS OUT P P

=−()

SHDM SHDN OPERATIONAL MODE

0 0 Shutdown

0 1 Normal operation

1 0 Normal operation

1 1 Shutdown

Table 1. Shutdown Mode Selection

(MAX9718 Only)

Power Dissipation and Heat Sinking

Under normal operating conditions, the MAX9718/

MAX9719 dissipate a significant amount of power. The

maximum power dissipation for each package is given

in the

Absolute Maximum Ratings

section under

Continuous Power Dissipation or can be calculated by

the following equation:

where TJ(MAX) is +150°C, TAis the ambient tempera-

ture, and θJA is the reciprocal of the derating factor in

°C/W as specified in the

Absolute Maximum Ratings

section. For example, θJA of the TQFN package is

+59.2°C/W.

The increase in power delivered by the BTL configura-

tion directly results in an increase in internal power dis-

sipation over the single-ended configuration. The

maximum internal power dissipation for a given VCC

and load is given by the following equation:

If the internal power dissipation for a given application

exceeds the maximum allowed for a given package,

reduce power dissipation by increasing the ground

plane heat-sinking capability and the size of the traces

to the device (see the

Layout and Grounding

section).

Other methods for reducing power dissipation are to

reduce VCC, increase load impedance, decrease ambi-

ent temperature, reduce gain, or reduce input signal.

Thermal-overload protection limits total power dissipa-

tion in the MAX9718/MAX9719. When the junction tem-

perature exceeds +160°C, the thermal protection

circuitry disables the amplifier output stage. The ampli-

fiers are enabled once the junction temperature cools

by 15°C. A pulsing output under continuous thermal

overload results as the device heats and cools.

For optimum power dissipation and heat sinking, con-

nect the exposed pad found on the µMAX, TDFN,

TQFN, and TSSOP packages to a large ground plane.

Fixed Differential Gain

The MAX9718B/E, MAX9718C/F, MAX9718D/G,

MAX9719B, MAX9719C, and MAX9719D feature inter-

nally fixed gains (see the

Selector Guide

). This simpli-

fies design, decreases required footprint size, and

eliminates external gain-setting resistors. Resistors R1

and R2shown in the

Functional Diagrams

are used to

achieve each fixed gain.

Adjustable Differential Gain

Gain-Setting Resistors

External feedback resistors set the gain of the

MAX9718A/H and MAX9719A. Resistors RFand RIN

(Figure 2) set the gain of the amplifier as follows:

where AVis the desired voltage gain. Hence, an RIN of

10kΩand an RFof 20kΩyields a gain of 2V/V, or 6dB.

RFcan be either fixed or variable, allowing the use of a

digitally controlled potentiometer to alter the gain under

software control.

DMAX CC

()

=22

PTT

DMAX JMAX A

() ()

=−

MAX9718/MAX9719

Low-Cost, Mono/Stereo,

1.4W Differential Audio Power Amplifiers

______________________________________________________________________________________ 11

+1 VOUT(P-P)

2 x VOUT(P-P)

VOUT(P-P)

-1

Figure 1. Bridge-Tied Load Configuration

MAX9718A/H

MAX9719A

BIAS

GENERATOR

INVERTING

DIFFERENTIAL

INPUT

NONINVERTING

DIFFERENTIAL

INPUT (OPTIONAL)

(OPTIONAL)

IN+

IN-

OUT+

OUT-

RIN

Figure 2. Setting the MAX9718A/H/MAX9719A Gain

MAX9718/MAX9719

Input Filter

The fully differential amplifier inputs can be biased at

voltages other than midsupply. The common-mode

feedback circuit adjusts for input bias, ensuring the

outputs are still biased at midsupply. Input capacitors

are not required as long as the common-mode input

voltage is within the specified range listed in the

Electrical Characteristics

table.

If input capacitors are used, input capacitor CIN, in

conjunction with RIN, forms a highpass filter that

removes the DC bias from an incoming signal. The AC-

coupling capacitor allows the amplifier to bias the sig-

nal to an optimum DC level. Assuming zero-source

impedance, the -3dB point of the highpass filter is

given by:

Setting f-3dB too high affects the low-frequency

response of the amplifier. Use capacitors with

dielectrics that have low-voltage coefficients, such as

tantalum or aluminum electrolytic. Capacitors with high-

voltage coefficients, such as ceramics, can increase

distortion at low frequencies.

BIAS Capacitor

BIAS is the output of the internally generated VCC/2

bias voltage. The BIAS bypass capacitor, CBIAS,

improves PSRR and THD+N by reducing power supply

and other noise sources at the common-mode bias

node, and also generates the clickless/popless startup

DC bias waveform for the speaker amplifiers. Bypass

BIAS with a 0.1µF capacitor to GND. Larger values of

CBIAS (up to 1µF) improve PSRR, but slow down

tON/tOFF times. A 1µF CBIAS capacitor slows turn-on

and turn-off times by 10 and improves PSRR by 20dB

(at 1kHz). Do not connect external loads to BIAS.

Supply Bypassing

Proper power-supply bypassing ensures low-noise,

low-distortion performance. Connect a 1µF ceramic

capacitor from VCC to GND. Add additional bulk

capacitance as required by the application. Locate the

bypass capacitor as close to the device as possible.

Layout and Grounding

Good PC board layout is essential for optimizing perfor-

mance. Use large traces for the power-supply inputs and

amplifier outputs to minimize losses due to parasitic trace

resistance and route heat away from the device. Good

grounding improves audio performance, minimizes

crosstalk between channels, and prevents any digital

switching noise from coupling into the audio signal.

The MAX9718/MAX9719 TDFN, TQFN, TSSOP, and

µMAX packages feature exposed thermal pads on their

undersides. This pad lowers the thermal resistance of the

package by providing a direct-heat conduction path

from the die to the PC board. Connect the exposed pad

to the ground plane using multiple vias, if required.

UCSP Applications Information

For the latest application details on UCSP construction,

dimensions, tape carrier information, PC board tech-

niques, bump-pad layout, and recommended reflow tem-

perature profile, as well as the latest information on

reliability testing results, refer to the Application Note

1891:

Wafer-Level Packaging (WLP) and Its Applications

fRC

dB IN IN

−=

2π

Low-Cost, Mono/Stereo,

1.4W Differential Audio Power Amplifiers

12 ______________________________________________________________________________________

PART MONO STEREO GAIN

(dB)

SELECTABLE

SHUTDOWN

POLARITY

MAX9718A/H √— Adjustable √

MAX9718B/E √—0 √

MAX9718C/F √—3 √

MAX9718D/G √—6 √

MAX9719A — √Adjustable —

MAX9719B — √0—

MAX9719C — √3—

MAX9719D — √6—

Selector Guide

MAX9718/MAX9719

Low-Cost, Mono/Stereo,

1.4W Differential Audio Power Amplifiers

______________________________________________________________________________________ 13

PART TEMP RANGE PIN-

PACKAGE

T O P

M A R K

MAX9718AEUB+ -40°C to +85°C 10 μM AX - E P * +AAAA

M AX 9718BE BL+ TG45 -40°C to +85°C 3 x 3 U C S P +ADX

MAX9718BETB+T -40°C to +85°C 10 TD FN - E P * +AAW

MAX9718BEUB+ -40°C to +85°C 10 μM AX - E P * +AAAB

M AX 9718C E BL+ TG45 -40°C to +85°C 3 x 3 U C S P +ADZ

MAX9718CETB+T -40°C to +85°C 10 TD FN - E P * +AAX

MAX9718CEUB+ -40°C to +85°C 10 μM AX - E P * +AAAC

M AX 9718D E BL+ TG45 -40°C to +85°C 3 x 3 U C S P +AEA

MAX9718DETB+T -40°C to +85°C 10 TD FN - E P * +AAY

MAX9718DEUB+ -40°C to +85°C 10 μM AX - E P * +AAAD

M AX 9718E E BL+ TG45 -40°C to +85°C 3 x 3 U C S P +AFB

MAX9718EETB+T -40°C to +85°C 10 TD FN - E P * +ASY

MAX9718EEUB+ -40°C to +85°C 10 μM AX - E P * +AAAJ

M AX 9718FE BL+ TG45 -40°C to +85°C 3 x 3 U C S P +AFC

MAX9718FETB+T -40°C to +85°C 10 TD FN - E P * +ASZ

MAX9718FEUB+ -40°C to +85°C 10 μM AX - E P * +AAAK

M AX 9718G E BL+ TG45 -40°C to +85°C 3 x 3 U C S P +AFD

MAX9718GETB+T -40°C to +85°C 10 TD FN - E P * +ATA

PART TEMP RANGE PIN-

PACKAGE

T O P

M A R K

MAX9718GEUB+ -40°C to +85°C 10 μM AX - E P * +AAAL

M AX 9718H E BL+ TG45 -40°C to +85°C 3 x 3 U C S P +AFE

MAX9718HETB+T -40°C to +85°C 10 TD FN - E P * +ATB

MAX9718HEUB+ -40°C to +85°C 10 μM AX - E P * +AAAM

MAX9719AEBE+T -40°C to +85°C 4 x 4 U C S P —

MAX9719AETE+ -40°C to +85°C 16 TQ FN - E P *—

MAX9719AEUE+ -40°C to +85°C 16 TS S O P - E P *—

M AX 9719BE BE + TG45 -40°C to +85°C 4 x 4 U C S P —

MAX9719BETE+ -40°C to +85°C 16 TQ FN - E P *—

MAX9719BEUE+ -40°C to +85°C 16 TS S O P - E P *—

M AX 9719C E BE + TG45 -40°C to +85°C 4 x 4 U C S P —

MAX9719CETE+ -40°C to +85°C 16 TQ FN - E P *—

MAX9719CEUE+ -40°C to +85°C 16 TS S O P - E P *—

M AX 9719D E BE + TG45 -40°C to +85°C 4 x 4 U C S P —

MAX9719DETE+ -40°C to +85°C 16 TQ FN - E P *—

MAX9719DEUE+ -40°C to +85°C 16 TS S O P - E P *—

Ordering Information (continued)

Chip Information

MAX9718 TRANSISTOR COUNT: 2359

MAX9719 TRANSISTOR COUNT: 4447

PROCESS: BiCMOS

UCSP Marking Information

AAA

XXX

I: A1 Bump indicator

AAA: Product code

XXX: Lot code

Denotes lead(Pb)-free/RoHS-compliant package.

EP = Exposed pad.

G45 indicates protective die coating.

MAX9718/MAX9719

Low-Cost, Mono/Stereo,

1.4W Differential Audio Power Amplifiers

14 ______________________________________________________________________________________

INL+

INL-

INR+

INR-

IN1+

IN1-

IN2+

IN2-

GND

SHDN

OUTL+

OUTL-

OUTR+

OUTR-

BIAS

1μF

10μF

MAX9719

VCC

INL

AUTOMATIC HEADPHONE DETECTION AND SPEAKER DISABLE CIRCUIT

C1P CIN

IN+

2.7V TO 5.5V

VCC

OUTR

2.7V TO 5.5V

SVSS

1μFMAX9722B

MAX961

OUTL

SHDN

PVSS

SVDD

PVDD

INR

1μF

1μF0.1μF1μF

0.1μF

1μF

0.1μF 0.1μF

220kΩ

IN-

System Diagram

MAX9718/MAX9719

Low-Cost, Mono/Stereo,

1.4W Differential Audio Power Amplifiers

______________________________________________________________________________________ 15

MAX9718B/E

MAX9718C/F

MAX9718D/G

2.7V TO 5.5V

SUPPLY

BIAS

GENERATOR

INVERTING

DIFFERENTIAL

INPUT

NONINVERTING

DIFFERENTIAL

INPUT

BIAS

SHDM

SHDN

(OPTIONAL)

CIN

(OPTIONAL)

CIN

IN+

IN-

VCC

GND

CBIAS

0.1μF

1.0μFR2

OUT+

OUT-

SHUTDOWN

CONTROL

MAX9718A/H

2.7V TO 5.5V

SUPPLY

BIAS

GENERATOR

INVERTING

DIFFERENTIAL

INPUT

NONINVERTING

DIFFERENTIAL

INPUT

BIAS

SHDM

SHDN

(OPTIONAL)

CIN

(OPTIONAL)

CIN

IN+

IN-

VCC

GND

CBIAS

0.1μF

1.0μF

OUT+

OUT-

RIN

SHUTDOWN

CONTROL

MAX9718A

AV = 2

fC = 1Hz

CIN = 1μF

RIN = 10kΩ

RF = 20kΩ

Functional Diagrams

MAX9718/MAX9719

Low-Cost, Mono/Stereo,

1.4W Differential Audio Power Amplifiers

16 ______________________________________________________________________________________

MAX9719B

MAX9719C

MAX9719D

2.7V TO 5.5V

SUPPLY

BIAS

GENERATOR

INVERTING

DIFFERENTIAL

INPUT

NONINVERTING

DIFFERENTIAL

INPUT

BIAS

SHDN

(OPTIONAL)

CIN

(OPTIONAL)

CIN

INL+

INL-

VCC

GND

CBIAS

0.1μF

1.0μFR2

OUTL+

OUTL-

INVERTING

DIFFERENTIAL

INPUT

NONINVERTING

DIFFERENTIAL

INPUT (OPTIONAL)

CIN

(OPTIONAL)

CIN

INR+

INR-

OUTR+

OUTR-

SHUTDOWN

CONTROL

MAX9719A

2.7V TO 5.5V

SUPPLY

BIAS

GENERATOR

INVERTING

DIFFERENTIAL

INPUT

NONINVERTING

DIFFERENTIAL

INPUT

BIAS

SHDN

(OPTIONAL)

CIN

(OPTIONAL)

CIN

INL+

INL-

VCC

GND

CBIAS

0.1μF

1.0μF

OUTL+

OUTL-

RIN

INVERTING

DIFFERENTIAL

INPUT

NONINVERTING

DIFFERENTIAL

INPUT (OPTIONAL)

CIN

(OPTIONAL)

CIN

INR+

INR-

OUTR+

OUTR-

SHUTDOWN

CONTROL

MAX9719A

AV = 2

fC = 1Hz

CIN = 1μF

RIN = 10kΩ

RF = 20kΩ

RIN

Functional Diagrams (continued)

MAX9718/MAX9719

Low-Cost, Mono/Stereo,

1.4W Differential Audio Power Amplifiers

______________________________________________________________________________________ 17

OUT+

VCC

123

CSHDN

SHDM

BIAS

OUT+

GND

OUT-

IN-

VCC

IN+

N.C.

GNDIN+

SHDM

IN-

SHDN

μMAX 3 × 3 UCSP

TOP VIEW TOP VIEW

(BUMPS ON BOTTOM)

OUT-BIAS

MAX9718

OUT+

VCC

N.C.

GNDIN+

SHDM

IN-

SHDN

TDFN

(3mm × 3mm × 0.8mm)

TQFN

(4mm × 4mm × 0.8mm)

TOP VIEW

OUT-BIAS

MAX9718

MAX9719

11 10 9

1234

OUTR+

GND

OUTL-

SHDN

VCC

OUTL+

GND

BIAS

VCC

OUTR-

INR-

GND

INR+

INL-

INL+

N.C.

TOP VIEW TOP VIEW

MAX9719

1234

GND GND

BIAS

GND

OUTL-

OUTR+

SHDN

OUTL+

OUTR-

INR+

INL-

VCC

INL+

4 × 4 UCSP

TOP VIEW

(BUMPS ON BOTTOM) MAX9719

INR-

OUTR- VCC

N.C.

OUTR+

GND

OUTL-

SHDN

VCC

OUTL+

TSSOP-EP

INR-

GND

INL+

INR+

INL-

BIAS

GND

Pin Configurations

MAX9718/MAX9719

Low-Cost, Mono/Stereo,

1.4W Differential Audio Power Amplifiers

18 ______________________________________________________________________________________

9LUCSP, 3x3.EPS

Package Information

For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the

package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the

package regardless of RoHS status.

PACKAGE TYPE PACKAGE CODE DOCUMENT NO.

3 x 3 UCSP B9+1 21-0093

10 TDFN-EP T1033+1 21-0137

10 μMAX U10E+3 21-0109

4 x 4 UCSP B16+6 21-0101

16 TQFN-EP T1644+4 21-0139

16 TSSOP-EP U16E+3 21-0108

MAX9718/MAX9719

Low-Cost, Mono/Stereo,

1.4W Differential Audio Power Amplifiers

______________________________________________________________________________________ 19

Package Information (continued)

For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the

package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the

package regardless of RoHS status.

MAX9718/MAX9719

Low-Cost, Mono/Stereo,

1.4W Differential Audio Power Amplifiers

20 ______________________________________________________________________________________

Package Information (continued)

For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the

package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the

package regardless of RoHS status.

COMMON DIMENSIONS

SYMBOL MIN. MAX.

A 0.70 0.80

D2.90 3.10

E 2.90 3.10

A1 0.00 0.05

L0.20

0.40

PKG. CODE ND2 E2 eJEDEC SPEC b[(N/2)-1] x e

PACKAGE VARIATIONS

0.25 MIN.

A2 0.20 REF.

2.00 REF

0.25±0.05

0.50 BSC

2.30±0.10

T1033-1

2.40 REF

0.20±0.05- - - -

0.40 BSC

1.70±0.10 2.30±0.10

T1433-1

1.50±0.10 MO229 / WEED-3

0.40 BSC - - - - 0.20±0.05 2.40 REF

T1433-2 14 2.30±0.10

1.70±0.10

T633-2 6 1.50±0.10 2.30±0.10 0.95 BSC MO229 / WEEA 0.40±0.05 1.90 REF

T833-2 8 1.50±0.10 2.30±0.10 0.65 BSC MO229 / WEEC 0.30±0.05 1.95 REF

T833-3 81.50±0.10 2.30±0.10 0.65 BSC MO229 / WEEC 0.30±0.05 1.95 REF

2.30±0.10 MO229 / WEED-3 2.00 REF

0.25±0.050.50 BSC1.50±0.10

T1033-2

0.25±0.05 2.00 REF

10 0.50 BSC MO229 / WEED-3

2.30±0.10

1.50±0.10

T1033MK-1

0.40 BSC - - - - 0.20±0.05 2.40 REFT1433-3F 14 2.30±0.101.70±0.10

MAX9718/MAX9719

Low-Cost, Mono/Stereo,

1.4W Differential Audio Power Amplifiers

______________________________________________________________________________________ 21

10L UMAX, EXPPADS.EPS

21-0109

Package Information (continued)

For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the

package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the

package regardless of RoHS status.

MAX9718/MAX9719

Low-Cost, Mono/Stereo,

1.4W Differential Audio Power Amplifiers

22 ______________________________________________________________________________________

16L,UCSP.EPS

Package Information (continued)

For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the

package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the

package regardless of RoHS status.

MAX9718/MAX9719

Low-Cost, Mono/Stereo,

1.4W Differential Audio Power Amplifiers

______________________________________________________________________________________ 23

24L QFN THIN.EPS

Package Information (continued)

For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the

package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the

package regardless of RoHS status.

MAX9718/MAX9719

Low-Cost, Mono/Stereo,

1.4W Differential Audio Power Amplifiers

24 ______________________________________________________________________________________

Package Information (continued)

For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the

package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the

package regardless of RoHS status.

MAX9718/MAX9719

Low-Cost, Mono/Stereo,

1.4W Differential Audio Power Amplifiers

______________________________________________________________________________________ 25

Package Information (continued)

For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the

package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the

package regardless of RoHS status.

MAX9718/MAX9719

Low-Cost, Mono/Stereo,

1.4W Differential Audio Power Amplifiers

26 ______________________________________________________________________________________

Package Information (continued)

For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the

package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the

package regardless of RoHS status.

MAX9718/MAX9719

Low-Cost, Mono/Stereo,

1.4W Differential Audio Power Amplifiers

Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are

implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.

Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________

Revision History

REVISION

NUMBER

REVISION

DATE DESCRIPTION PAGES

CHANGED

5 2/08 Updated Pin Configurations.17

6 3/09 Added lead-free and G45 options to Ordering Information 1, 13

7 4/10 Updated continuous power dissipation for 9-bump and 16-bump UCSP

packages and corrected error in the Pin Description section 2, 9

Mouser Electronics

Authorized Distributor

Click to View Pricing, Inventory, Delivery & Lifecycle Information:

Maxim Integrated:

MAX9718AETB+T MAX9719AETE+ MAX9718DEUB+ MAX9718DEUB+T MAX9718AEBL+TG45 MAX9718AEUB+

MAX9718AEUB+T MAX9718BEBL+TG45 MAX9718BETB+T MAX9718CEBL+TG45 MAX9718CETB+T

MAX9718DEBL+TG45 MAX9718DETB+T MAX9719AEBE+T MAX9719AETE+T MAX9719BEBE+T MAX9719BETE+

MAX9719BETE+T MAX9719CEBE+T MAX9719CETE+ MAX9719CETE+T MAX9719DEBE+T MAX9719DETE+

MAX9719DETE+T MAX9718FEBL+TG45