General Description
The MAX9890 provides click-and-pop suppression for
devices such as CODECs with integrated headphone
amplifiers that lack a clickless/popless startup/power-
up or shutdown/power-down. The device controls the
ramping of the DC bias voltage on the output-coupling
capacitors and the application of the audio signal to
ensure that no audible transients are present at the
headphones. The MAX9890A features a 200ms startup
time for use with up to 100µF coupling capacitors. The
MAX9890B features a 330ms startup time for use with
greater than 100µF coupling capacitors.
The MAX9890 consumes 14µA of supply current and
0.001µA in shutdown, while contributing less than
0.003% THD+N into a 32Ωload. ESD (Human Body
Model) protection circuitry on the outputs protect the
MAX9890 and devices further up the signal chain from
ESD strikes up to ±8kV.
The MAX9890 is available in a miniature (1.5mm ✕
1.5mm ✕0.6mm) 9-bump chip-scale package (UCSP™),
as well as an 8-pin TDFN package (3mm ✕3mm ✕
0.8mm), and is specified for operation over the
-40°C to +85°C extended temperature range.
Applications
High-End Notebook Audio PDAs
Portable DVD Players Cell Phones
Portable MP3 Players
Features
♦36dB Click-Pop Suppression
♦2.7V to 5.5V Single-Supply Operation
♦Clickless/Popless Startup/Power-Up and
Shutdown/Power-Down
♦0.001µA Low-Power Shutdown Mode
♦THD+N < 0.003% Into 32Ω
♦±8kV ESD Protected Outputs (Human Body Model)
♦Requires Only One 0.1µF Capacitor to Complete
the Circuit
♦Low 14µA Supply Current
♦Tiny Packaging
9-Bump UCSP (1.5mm x 1.5mm x 0.6mm)
8-Pin TDFN (3mm x 3mm x 0.8mm)
MAX9890
Audio Click-Pop Suppressor
________________________________________________________________ Maxim Integrated Products 1
Ordering Information
19-2932; Rev 2; 5/04
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
EVALUATION KIT
AVAILABLE
PART
TEMP RANGE
PIN-
PACKAGE
TOP
MARK
M AX 9890AE BL- T
-40°C to +85°C
9 UCSP-9 ADV
MAX9890AETA
-40°C to +85°C 8 TDFN-EP**
AHA
M AX 9890BE BL- T
-40°C to +85°C
9 UCSP-9 ADW
MAX9890BETA
-40°C to +85°C 8 TDFN-EP**
AHB
Selector Guide
PART
PIN-PACKAGE
SWITCH TURN-ON
TIME (ms)
MAX9890AEBL-T 9 UCSP-9 200
MAX9890AETA 8 TDFN-EP 200
MAX9890BEBL-T 9 UCSP-9 330
MAX9890BETA 8 TDFN-EP 330
UCSP is a trademark of Maxim Integrated Products, Inc.
**EP = Exposed pad.
Simplified Block Diagram
RAMP
UP
SINGLE SUPPLY
2.7V TO 5.5V
MAX9890
INL
INR
OUTL
OUTR
RAMP
DOWN
Typical Application Circuit and Pin Configurations appear
at end of data sheet.
MAX9890
Audio Click-Pop Suppressor
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
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.
(All Voltages are Referenced to GND)
VCC ........................................................................................+6V
CEXT, SHDN, OUT_ .................................................-0.3V to +6V
IN_ ..............................................................-0.3V to (VCC + 0.3V)
Continuous Current (IN_, OUT_).....................................±150mA
Continuous Current (All Other Pins) .................................±20mA
Continuous Power Dissipation (TA= +70°C)
8-Pin TDFN (derate 24.4mW/°C above +70°C) ..........1951mW
9-Bump UCSP (derate 4.7mW/°C above +70°C)..........379mW
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Junction Temperature......................................................+150°C
Lead Temperature (soldering, 10s) .................................+300°C
Bump Temperature (soldering)
Reflow ...........................................................................+235°C
ELECTRICAL CHARACTERISTICS
(VCC = 3V, SHDN = VCC, GND = 0, CCEXT = 0.1µF, TA= TMIN to TMAX, unless otherwise noted. Typical values are at TA= +25°C.)
(Note 1)
PARAMETER
SYMBOL
CONDITIONS
TYP
MAX
UNITS
Supply Voltage Range VCC Inferred from RON test 2.7 5.5 V
Supply Current ICC (Note 2) 14 22 µA
Shutdown Supply Current ISHDN SHDN = GND
0.001
1µA
Input Voltage Range Inferred from RON test 0
VCC
V
VCC = 5.5V 0.4 1
On-Resistance RON Over input voltage
range VCC = 2.7V 0.7 1.5 Ω
On-Resistance Flatness
RFLAT
(
ON
)
Over input voltage range 2 mΩ
Output Discharge Resistance
ROUT
(
DIS
)
220
kΩ
Input Off-Leakage Current SHDN = GND
0.001
1µA
VCC Power-Down Threshold
(Note 3) VUVLO VCC falling 2.5 V
Click-Pop Reduction 36 dB
ESD Protection OUT_, Human Body Model ±8kV
DYNAMIC
MAX9890A
200
Turn-On Time (Note 4) tON MAX9890B
330
ms
Turn-Off Time tOFF (Note 5)
120
ns
Bandwidth
>100
kHz
Total Harmonic Distortion Plus
Noise
THD+N
RL = 32Ω, 30mW, f = 1kHz
0.003
%
Off-Isolation, IN_ to OUT_ f = 20kHz, SHDN = GND, RL = 32Ω
-108
dB
Crosstalk (Switches ON) f = 20kHz
-100
dB
VRIPPLE = 0.5VP-P at 20Hz, fIN = 3kHz at
1VP-P, RL = 32Ω
-100
VRIPPLE = 0.5VP-P at 1kHz, fIN = 3kHz at
1VP-P, RL = 32Ω
-100
Power-Supply Rejection Ratio
(Note 6) PSRR
VRIPPLE = 0.5VP-P at 20kHz, fIN = 3kHz
at 1VP-P, RL = 32Ω-84
dB
MAX9890
Audio Click-Pop Suppressor
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(VCC = 3V, SHDN = VCC, GND = 0, CCEXT = 0.1µF, TA= TMIN to TMAX, unless otherwise noted. Typical values are at TA= +25°C.)
(Note 1)
PARAMETER
SYMBOL
CONDITIONS
TYP
MAX
UNITS
LOGIC INPUT (SHDN)
Logic-Input High Voltage VIH VCC = 2.7V to 5.5V 2.0 V
Logic-Input Low Voltage VIL VCC = 2.7V to 5.5V 0.8 V
Logic-Input Current IIN ±1 µA
Note 1: All devices are 100% tested at TA= +25°C. All temperature limits are guaranteed by design.
Note 2: Supply current is measured when switch is on (i.e., SHDN = VCC, t > tON).
Note 3: Supply voltage level where the device enters its power-down cycle.
Note 4: Turn-on time is measured from the time VCC = 3V and SHDN > VIH until the RON specification is met.
Note 5: Switch turn-off time is measured from the time SHDN < VIL or VCC < VUVLO until the off-isolation specification is met.
Note 6: See the Power-Supply Rejection Ratio section for test method.
Typical Operating Characteristics
(VCC = 3V, CCEXT = 0.1µF, typical values are at TA= +25°C, unless otherwise noted.)
ON-RESISTANCE vs. IN_ VOLTAGE
MAX9890 toc01
IN_ VOLTAGE (V)
ON-RESISTANCE (Ω)
4321
0.3
0.4
0.5
0.6
0.7
0.8
0.2
05
VCC = 3V
VCC = 5V
SUPPLY CURRENT vs. TEMPERATURE
MAX9890 toc02
TEMPERATURE (°C)
SUPPLY CURRENT (μA)
6035-15 10
5
10
15
20
25
30
35
40
0
-40 85
VCC = 5.5V
VCC = 2.7V
SHUTDOWN CURRENT vs. TEMPERATURE
MAX9890 toc03
TEMPERATURE (°C)
SHUTDOWN CURRENT (pA)
603510-15
100
200
300
400
500
600
700
800
900
1000
0
-40 85
VCC = 2.7V
VCC = 5.5V
SHDN = 0V
MAX9890
Audio Click-Pop Suppressor
4 _______________________________________________________________________________________
FREQUENCY (Hz)
ON-LOSS (dB)
10k1k10010 100k
ON-LOSS vs. FREQUENCY
MAX9890 toc04
-0.6
-0.2
0.2
0.6
1.0
-1.0
-0.8
-0.4
0
0.4
0.8
RL = 32Ω
RL = 16Ω
PHASE SHIFT (DEGREES)
-4
-3
-2
-1
0
1
2
-5
FREQUENCY (Hz)
10010
PHASE SHIFT vs. FREQUENCY
MAX9890 toc05
RL = 32Ω
RL = 16Ω
10k1k 100k
OFF-ISOLATION (dB)
-130
-110
-90
-70
-50
-30
-10
10
-150
FREQUENCY (Hz)
10k1k10010 100k
OFF-ISOLATION vs. FREQUENCY
MAX9890 toc06
RL = 32Ω
RL = 16Ω
CROSSTALK (dB)
-140
-130
-120
-110
-100
-90
-80
-70
-60
-50
-150
FREQUENCY (Hz)
10k1k10010 100k
CROSSTALK vs. FREQUENCY
MAX9890 toc07
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. OUTPUT POWER
MAX9890 toc08
OUTPUT POWER (mW)
THD+N (%)
225200175150125100755025
0.001
0.1
0.01
1
10
100
0.0001
0 250
VCC = 5V
RL = 16Ω
f = 1kHz
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT POWER
MAX9890toc09
OUTPUT POWER (mW)
THD+N (%)
14012010080604020
0.001
0.01
0.1
1
10
100
0.0001
0160
VCC = 5V
RL = 32Ω
f = 1kHz
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT POWER
MAX9890toc10
OUTPUT POWER (mW)
THD+N (%)
125100755025
0.001
0.01
0.1
1
10
100
0.0001
0 150
VCC = 3V
RL = 16Ω
f = 1kHz
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT POWER
MAX9890toc11
OUTPUT POWER (mW)
THD+N (%)
70605040302010
0.001
0.01
0.1
1
10
100
0.0001
080
VCC = 3V
RL = 32Ω
f = 1kHz
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
MAX9890toc12
FREQUENCY (Hz)
THD+N (%)
10k1k100
0.001
0.01
0.1
1
0.0001
10 100k
VCC = 5V
RL = 16Ω
OUTPUT POWER = 150mW
OUTPUT POWER = 25mW
Typical Operating Characteristics (continued)
(VCC = 3V, CCEXT = 0.1µF, typical values are at TA= +25°C, unless otherwise noted.)
MAX9890
Audio Click-Pop Suppressor
_______________________________________________________________________________________ 5
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
MAX9890toc13
FREQUENCY (Hz)
THD+N (%)
10k1k100
0.001
0.01
0.1
1
0.0001
10 100k
VCC = 5V
RL = 32Ω
OUTPUT POWER = 70mW
OUTPUT POWER = 20mW
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
MAX9890toc14
FREQUENCY (Hz)
THD+N (%)
10k1k100
0.001
0.01
0.1
1
0.0001
10 100k
VCC = 3V
RL = 16Ω
OUTPUT POWER = 60mW
OUTPUT POWER = 20mW
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
MAX9890toc14
FREQUENCY (Hz)
THD+N (%)
10k1k100
0.001
0.01
0.1
1
0.0001
10 100k
VCC = 3V
RL = 32Ω
OUTPUT POWER = 30mW
OUTPUT POWER = 15mW
SHDN
2V/div
VOUT
1V/div
VHEADPHONE
10mV/div
40ms/div
STARTUP WAVEFORM (DC)
MAX9890 toc16
SHDN
2V/div
VOUT
1V/div
VHEADPHONE
10mV/div
10s/div
SHUTDOWN WAVEFORM (DC)
MAX9890 toc17
SHDN
2V/div
VOUT
1V/div
VHEADPHONE
1V/div
40ms/div
STARTUP WAVEFORM (AC)
MAX9890 toc18
SHDN
2V/div
VOUT
1V/div
VHEADPHONE
1V/div
1s/div
SHUTDOWN WAVEFORM (AC)
MAX9890 toc19
Typical Operating Characteristics (continued)
(VCC = 3V, CCEXT = 0.1µF, typical values are at TA= +25°C, unless otherwise noted.)
MAX9890
Detailed Description
The MAX9890 provides click-and-pop suppression for
single-supply devices such as CODECs and other
headphone amplifiers that do not have click-and-pop
suppression. Single-supply audio amplifier outputs
have a DC bias voltage, VCC / 2, and require large out-
put-coupling capacitors to block the DC voltage from
the speaker. During startup or shutdown, the DC bias
voltage is quickly raised or lowered (Figure 1), resulting
in an audible transient through the headphone load.
The MAX9890 prevents the audible transient by slowly
ramping the DC bias in an S-shaped waveform (Figure
2), suppressing the large transient at the output of the
coupling capacitor. The S-shaped waveform shapes
the frequency spectrum, minimizing the amount of
audible components present at the output.
Internal switches couple the inputs to the outputs after
the coupling capacitors have fully charged to the input
common-mode bias voltage. When power is removed or
the device is put into shutdown, the internal switches in
the MAX9890 immediately disconnect the output and
slowly discharge the coupling capacitors through
220kΩresistors.
The MAX9890 has an undervoltage lockout (UVLO) that
prevents device operation when VCC is below the
power-down threshold (2.5V, typ). The MAX9890 fea-
tures ±8kV ESD (Human Body Model) protection on the
audio outputs.
Startup
The MAX9890 monitors VCC and SHDN. The UVLO
holds the device off when VCC is below the power-
down threshold (VUVLO) or SHDN is held low. The
device needs both VCC above the power-down thresh-
old and SHDN = high for the part to start up. Once the
supply voltage is above the power-down threshold and
SHDN is high, the device charges the coupling capaci-
tors to the input DC bias voltage using CEXT to control
the ramp. After the DC bias ramp, the internal switches
close, coupling the audio input to the output. The
MAX9890 provides click-pop suppression even if the
output blocking capacitors are already partially or fully
charged.
The MAX9890A features a 200ms switch turn-on time,
enabling the use of up to 100µF coupling capacitors at
the output for applications requiring only a limited low-
frequency response and a rapid turn-on time. The
MAX9890B features a 330ms switch turn-on time,
enabling the use of >100µF coupling capacitors at the
output for extended low-frequency response applica-
tions. For optional click-pop suppression, mute the
audio signal until after the turn-on time has elapsed.
The internal switches stay closed as long as VCC is
above the power-down threshold voltage and SHDN is
high. Figures 1 and 2 show typical startup/power-up
sequences with and without click-pop suppression.
Shutdown
If the supply voltage falls below the UVLO threshold or
if SHDN is driven low, the device enters low-power
shutdown mode. In low-power shutdown mode, quies-
cent current reduces to 0.001µA. The switches are
immediately turned off and 220kΩresistors slowly
bleed the charge off the coupling capacitors. Figures 3
and 4 show typical shutdown/power-down sequences
with and without click-pop suppression. For optimal
click-pop performance, mute the audio signal before
shutting down the MAX9890.
Audio Click-Pop Suppressor
6 _______________________________________________________________________________________
Pin Description
PIN/BUMP
TDFN UCSP
NAME FUNCTION
1C2V
CC
Power Supply. VCC accepts 2.7V to 5.5V input supply. Bypass VCC to GND with a 1µF capacitor.
2C1SHDN Active-Low Shutdown. Connect SHDN to GND to enter a 0.1µA shutdown mode. Connect SHDN
to VCC for normal operation.
3 B1 INL Left-Channel Audio Input. Connect to output of headphone amplifier.
4 A1 OUTL Left-Channel Audio Output. AC couple to headphone.
5 A2 GND Ground
6 A3 OUTR Right-Channel Audio Output. AC couple to headphone.
7 B3 INR Right-Channel Audio Input. Connect to output of headphone amplifier.
8 C3 CEXT External Capacitor. Connect a 0.1µF capacitor from CEXT to GND.
Switches
The MAX9890’s internal switches connect the input to the
output after the coupling capacitors are fully charged.
The MAX9890A holds the switches open for 200ms and is
ideal for coupling capacitors less than 100µF. The
MAX9890B has a longer turn-on time of 330ms and is
ideal with larger coupling capacitors less than 220µF. The
internal switches have a low on-resistance (RON = 0.5Ω)
and on-resistance flatness (RFLAT(ON) = 2mΩ) minimizing
total harmonic distortion plus noise (THD+N). The rela-
tionship below shows the contribution to THD+N through
the switch, due to on-resistance and on-resistance flat-
MAX9890
Audio Click-Pop Suppressor
_______________________________________________________________________________________ 7
40ms/div
FFT: 25Hz/div
VOUT
1V/div
VCC/SHDN
2V/div
VHEADPHONE
100mV/div
FFTHEADPHONE
20dB/div
0dB
Figure 1. Startup/Power-Up Sequence Without Click-Pop
Suppression
40ms/div
FFT: 25Hz/div
VOUT
1V/div
VHEADPHONE
50mV/div
FFTHEADPHONE
20dB/div
VCC/SHDN
2V/div
0dB
Figure 2. Startup/Power-Up Sequence With Click-Pop
Suppression
100ms/div
FFT: 25Hz/div
VOUT
1V/div
VHEADPHONE
500mV/div
VCC/SHDN
2V/div
FFTHEADPHONE
20dB/div
0dB
Figure 3. Shutdown/Power-Down Sequence Without Click-Pop
Suppression
100ms/div
FFT: 25Hz/div
VOUT
1V/div
VHEADPHONE
20mV/div
FFTHEADPHONE
20dB/div
VCC/SHDN
2V/div
0dB
Figure 4. Shutdown/Power-Down Sequence With Click-Pop
Suppression
MAX9890
ness (on-resistance flatness is defined as the difference
between the maximum and minimum values of on-resis-
tance measured over the specific analog-signal range).
Power-Supply Rejection Ratio (PSRR)
PSRR is the measurement of AC power-supply ripple or
noise that couples to the output. Variations in supply volt-
age corrupt the audio signal, due to changes in the RON
value by supply modulation. The FFT shown in Figure 5
was taken with a 19kHz 1VP-P sine wave onto the 5V DC
supply voltage, and a 20kHz 1VP-P sine wave applied at
IN_ with a 32Ωload is shown in Figure 6. The MAX9890
maintains a -100dB (typ) PSRR across the supply voltage
range eliminating any corruption of the audio signal from
supply variations. Therefore, with a zero audio signal, the
RON variation due to supply voltage ripple does not con-
tribute to any output signal modulation.
Low-Frequency Response
In addition to the cost and size disadvantages of the
output-coupling capacitors, these capacitors limit the
amplifier’s low-frequency response and can distort the
audio signal.
The impedance of a headphone or speaker load and
the output-coupling capacitor form a highpass filter with
the -3dB point set by:
where RLis the headphone impedance and COUT is
the output-coupling capacitor value. The highpass filter
is required by conventional single-ended, single power-
supply headphone drivers to block the midrail DC bias
component of the audio signal from the headphones.
The drawback to the filter is that it can attenuate low-
frequency signals. Larger values of COUT reduce this
effect but result in physically larger, more expensive
capacitors. Figure 7 shows the relationship between the
size of COUT and the resulting low-frequency attenua-
tion. Note that the -3dB point for a 16Ωheadphone with
a 100µF blocking capacitor is 100Hz, well within the
normal audio band, resulting in low-frequency attenua-
tion of the reproduced signal.
The MAX9890A and MAX9890B have different turn-on
times to accommodate different size output-coupling
capacitors (see Table 1). Using a capacitor smaller
than the specified maximum allowed does not degrade
click-pop suppression. Therefore, capacitors less than
100µF can be used with the A or B version devices.
fRC
dB L OUT
−=
3
1
2π
THD R
R
MAXIMUM FLAT ON
LOAD
=×
() %
4100
Audio Click-Pop Suppressor
8 _______________________________________________________________________________________
-140
-70
-80
-90
-100
-110
-120
-130
-50
-60
-30
-40
-20
0
-10
10
15 17 19 21 23 25
VCC = 4.5V TO 5.5V, fVCC = 19kHz,
RL = 32Ω, VIN = 1VP-P, fIN = 20kHz
FREQUENCY (kHz)
OUTPUT SPECTRUM (dBV)
Figure 5. FFT for PSRR
RAMP
UP
VDC = 5V
VAC = 1VP-P
19kHz
VDC = 2.0V
VAC = 1VP-P
20kHz
SHDN
MAX9890
IN_
IN_
OUT_
RL
OUT_
RAMP
DOWN
VCC
Figure 6. PSRR Test Circuit
External Capacitor (CCEXT)
The external click-pop suppression capacitor at CEXT
serves a dual purpose. On power-up, CCEXT is
charged by an internal current source and is used to
slowly ramp up the external coupling capacitors. When
the device is powered down, CCEXT powers the internal
circuitry used to drain the external coupling capacitors.
A 0.1µF capacitor between CEXT and GND provides
clickless/popless operation with coupling capacitors for
both the MAX9890A and MAX9890B, even with the
rapid removal of supply voltage.
Applications Information
Layout
Good layout improves performance by decreasing the
amount of stray capacitance and noise. To decrease
stray capacitance, minimize PC board trace lengths
and resistor leads, and place external components as
close to the device as possible.
Power Supply and Bypassing
The excellent PSRR of the MAX9890 allows it to operate
from noisy power supplies. In most applications, a
0.1µF capacitor from VCC to GND is sufficient. This
bypass capacitor should be placed close to VCC.
UCSP Applications Information
For the latest application details on UCSP construction,
dimensions, tape-carrier information, printed circuit
board techniques, bump-pad layout, and recommend-
ed reflow temperature profile, as well as the latest infor-
mation on reliability testing results, refer to the
Application Note, “UCSP—A Wafer-Level Chip-Scale
Package” available on Maxim’s website at www.maxim-
ic.com/ucsp.
Chip Information
TRANSISTOR COUNT: 1001
PROCESS: BiCMOS
MAX9890
Audio Click-Pop Suppressor
_______________________________________________________________________________________ 9
0
-30
10 100 1k 10k 100k
LOW-FREQUENCY ROLLOFF
(RL = 16Ω)
-24
-27
-12
-15
-18
-21
-6
-9
-3
FREQUENCY (Hz)
ATTENUATION (dB)
330μF
220μF
100μF
33μF
Figure 7. Low-Frequency Attenuation for Common DC-Blocking
Capacitor Values
CAPACITOR
SIZE (µF)
MAX9890A
TURN-ON TIME
(200ms)
MAX9890B
TURN-ON TIME
(300ms)
33 √√
47 √√
100 √√
150 * √
220 * √
330 — *
470 — *
Table 1. Coupling Capacitor
*May experience some degradation of click-pop suppression.
MAX9890
Audio Click-Pop Suppressor
10 ______________________________________________________________________________________
TDFN-EP
TOP VIEW
1
2
8
7
3
4
6
5
OUTR
GND
OUTL
CEXT
INR
SHDN
INL
VCC
MAX9890
NOTE: GND IS CONNECTED TO THE UNDERSIDE METAL SLUG. SHDN
GND
VCC
INL
OUTR
INR
OUTL
CEXT
UCSP
A
B
C
12 3
MAX9890
(BUMPS ON BOTTOM)
Pin Configurations
HPLOUT
HPROUT
STARTUP AND
SHUTDOWN
CONTROL
GND
SHDN
OUTL
OUTR
INL
INR
CEXT
VCC
0.1μF
1μF
5
7
3
2
4
6
8
1
2.7V TO 5.5V
( ) UCSP BUMP.
*USER-DEFINED VALUE.
(C2)
(C3)
(A1)
(A3)
(A2)
(B3)
(B1)
(C1)
*
*
MAX9890
RAMP-UP AND
RAMP-DOWN
CONTROL
CODEC
WITH INTEGRATED
HEADPHONE
DRIVERS
Typical Application Circuit
MAX9890
Audio Click-Pop Suppressor
______________________________________________________________________________________ 11
Package Information
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages.)
9LUCSP, 3x3.EPS
PACKAGE OUTLINE, 3x3 UCSP
21-0093 1
1
L
MAX9890
Audio Click-Pop Suppressor
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.
12 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 2004 Maxim Integrated Products is a registered trademark of Maxim Integrated Products.
Package Information (continued)
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages.)
6, 8, &10L, DFN THIN.EPS
COMMON DIMENSIONS
SYMBOL MIN. MAX.
A 0.70 0.80
D 2.90 3.10
E 2.90 3.10
A1 0.00 0.05
L 0.20 0.40
PKG. CODE N D2 E2 eJEDEC SPEC b[(N/2)-1] x e
PACKAGE VARIATIONS
0.25 MIN.k
A2 0.20 REF.
2.00 REF0.25±0.050.50 BSC2.30±0.1010T1033-1
2.40 REF0.20±0.05- - - - 0.40 BSC1.70±0.10 2.30±0.1014T1433-1
1.50±0.10 MO229 / WEED-3
0.40 BSC - - - - 0.20±0.05 2.40 REFT1433-2 14 2.30±0.101.70±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 8 1.50±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 REF0.25±0.050.50 BSC1.50±0.1010T1033-2