General Description
The MAX4484/MAX4486/MAX4487 single/dual/quad
low-cost general-purpose op amps operate from a sin-
gle +2.7V to +5.5V supply. The op amps are unity-gain
stable with a 7MHz gain-bandwidth product, capable of
driving an external 2kΩload with Rail-to-Rail®output
swing. The amplifiers are stable with capacitive loads of
up to 100pF. The MAX4484/MAX4486/MAX4487 are
specified from -40°C to +125°C, making them suitable
for a variety of harsh environments, such as automotive.
The single MAX4484 is available in the ultra-small 5-pin
SC70, while the dual MAX4486 is packaged in the
space-saving 8-pin SOT23 and µMAX packages. The
quad MAX4487 is available in the 14-pin SO and
TSSOP packages.
________________________Applications
Single-Supply Zero-Crossing Detector
Instruments and Terminals
Portable Communicators
Electronic Ignition Modules
Infrared Receivers for Remote Controls
Sensor Signal Detection
____________________________Features
♦7MHz Unity-Gain Stable Bandwidth
♦Stable for Capacitive Loads up to 100pF
♦+2.7V to +5.5V Single-Supply Voltage Range
♦Ground-Sensing Inputs
♦Outputs Swing Rail-to-Rail
♦No Phase Reversal for Overdriven Inputs
♦85dB AVOL with 2kΩLoad
♦0.01% THD with 2kΩLoad
♦Available in Space-Saving Packages
5-Pin SC70 (MAX4484)
8-Pin SOT23 (MAX4486)
MAX4484/MAX4486/MAX4487
Single/Dual/Quad, Low-Cost, Single-Supply
7MHz, Rail-to-Rail Op Amps
________________________________________________________________ Maxim Integrated Products 1
IN+
IN-
1
2
3
5
4OUT
VSS
VDD
MAX4484
SC70-5/SOT23-5
6
SOT23-8/SO-8/µMAX
SO-14/TSSOP-14
VSS
OUTA
INA+
1
2
3
4
8
INB-
5INB+
7OUTB
INA-
VDD OUTA
INA+
INB+
OUTB
INB-
1
2
3
4
5
6
7
14
13
12
11
10
9
8
IND+
INC+
INC-
OUTC
IND-
OUTD
INA-
VDD VSS
MAX4487
MAX4486
Pin Configurations/Functional Diagrams
19-1823, Rev 0; 10/00
For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
Ordering Information
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
PART TEMP.
RANGE
PIN-
PACKAGE
TOP
MARK
MAX4484AXK-T -40°C to +125°C 5 SC70-5 ABQ
MAX4484AUK-T -40°C to +125°C 5 SOT23-5 ADPE
MAX4486AKA-T -40°C to +125°C 8 SOT23-8 AAEP
MAX4486ASA -40°C to +125°C 8 SO —
MAX4486AUA -40°C to +125°C8 µMAX —
MAX4487AUD -40°C to +125°C 14 TSSOP —
MAX4487ASD -40°C to +125°C 14 SO —
MAX4484/MAX4486/MAX4487
Single/Dual/Quad, Low-Cost, Single-Supply
7MHz, Rail-to-Rail Op Amps
2 _______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS—TA= +25°C
(VDD = +5.0V, VSS = 0, VCM = 0, VOUT= VDD/2, RL= ∞to VDD/2, unless otherwise noted.)
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.
Power Supply Voltage (VDD to VSS) .........................-0.3V to +6V
All Other Pins....................................(VSS - 0.3V) to (VDD + 0.3V)
Output Short-Circuit Duration (OUT shorted
to VDD or VSS)...........................................................Continuous
Continuous Power Dissipation (TA= +70°C)
5-Pin SC70 (derate 3.1mW/°C above +70°C)..............247mW
5-Pin SOT23 (derate 7.1mW/°C above +70°C) ...........571mW
8-Pin SOT23 (derate 9.1mW/°C above +70°C)............727mW
8-Pin SO (derate 5.88mW/°C above +70°C)................471mW
8-Pin µMAX (derate 4.5mW//°C above +70°C) ............362mW
14-Pin TSSOP (derate 9.1mW/°C above +70°C) .........727mW
14-Pin SO (derate 8.33mW/°C above +70°C)..............667mW
Operating Temperature Range .........................-55°C to +125°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Supply Voltage Range VDD Inferred from PSRR test 2.7 5.5 V
VDD = +2.7V 1.9
Supply Current per Amplifier IDD VDD = +5.0V 2.2 3.5 mA
MAX4484 ±0.3 ±5.0
MAX4486 ±0.3 ±7.0Input Offset Voltage VOS
MAX4487 ±0.3 ±9.0
mV
Input Bias Current IB(Note 1) ±0.1 100 pA
Input Offset Current IOS (Note 1) ±0.1 100 pA
Input Resistance RIN Differential or common mode 1000 GΩ
Input Common-Mode Voltage
Range VCM Inferred from CMRR test VSS VDD -
1.3 V
Common-Mode Rejection Ratio CMRR VSS ≤ VCM ≤ VDD - 1.3V 67 83 dB
Power-Supply Rejection
Ratio PSRR +2.7V ≤ VDD ≤ +5.5V 70 85 dB
RL = 100kΩ98
Large-Signal Voltage Gain AVOL
VSS + 0.3V ≤ VOUT ≤ VDD -
0.3V RL = 2kΩ76 85 dB
RL = 100kΩ3
Output Voltage High VOH Specified as |VDD - VOH|RL = 2kΩ15 50 mV
RL = 100kΩ1
Output Voltage Low VOL Specified as |VOL - VSS|RL = 2kΩ20 50 mV
Sourcing 27
Output Short-Circuit Current ISC Sinking 33 mA
Gain-Bandwidth Product GBW 7 MHz
Phase Margin φm55d eg r ees
Gain Margin Gm 12 dB
Slew Rate SR 20 V/µs
Input Voltage Noise Density enf = 10kHz 29 nV/√Hz
Input Current Noise Density inf = 10kHz 1 fA/√Hz
ABSOLUTE MAXIMUM RATINGS
MAX4484/MAX4486/MAX4487
Single/Dual/Quad, Low-Cost, Single-Supply
7MHz, Rail-to-Rail Op Amps
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS—TA= +25°C (continued)
(VDD = +5.0V, VSS = 0, VCM = 0, VOUT = VDD/2, RL= ∞to VDD/2, unless otherwise noted.)
Note 1: Guaranteed by design.
Note 2: Specifications are 100% tested at TA= +25°C (exceptions marked). All temperature limits are guaranteed by design.
ELECTRICAL CHARACTERISTICS—TA= -40°C to +125°C
(VDD = +5.0V, VSS = 0, VCM = 0, VOUT = VDD/2, RL= ∞to VDD/2, unless otherwise noted.) (Note 2)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Capacitive-Load Stability CLOAD AV = +1V/V (Note 1) 100 pF
Power-On Time tON 1µs
Input Capacitance CIN 2pF
RL = 100kΩ0.006
Total Harmonic Distortion THD f = 10kHz, VOUT = 2Vp-p,
AV = +1V/V RL = 2kΩ0.01 %
Settling Time to 0.01% tSVOUT = 4V step, AV = +1V/V 450 ns
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Supply Voltage Range VDD Inferred from PSRR test 2.7 5.5 V
Supply Current per Amplifier IDD 4.0 mA
MAX4484 ±8.5
MAX4486 ±10.0
Input Offset Voltage VOS
MAX4487 ±11.0
mV
Input Offset Voltage Drift TCVOS ±6 µV/°C
Input Bias Current IB(Note 1) ±100 pA
Input Offset Current IOS (Note 1) ±100 pA
Input Common-Mode Voltage
Range VCM Inferred from CMRR test VSS V
DD - 1. 4 V
TA = - 40°C to + 85°C 65
Common-Mode Rejection Ratio CMRR VSS ≤ VCM ≤ VDD -
1.4V TA = - 40°C to + 125°C 62 dB
TA = - 40°C to + 85°C 67
Power-Supply Rejection Ratio PSRR +2.7V ≤ VDD ≤ +5.5V TA = - 40°C to + 125°C 64 dB
TA = - 40°C to + 85°C 66
Large-Signal Voltage Gain AVOL VSS + 0.3V ≤ VOUT ≤
VDD - 0.3V, RL = 2kΩTA = - 40°C to + 125°C 62 dB
TA = - 40°C to + 85°C 100
Output Voltage High VOH |VDD - VOUT|,
RL = 2kΩTA = - 40°C to + 125°C 100 mV
TA = - 40°C to + 85°C 100
Output Voltage Low VOL |VOUT - VSS|
RL = 2kΩTA = - 40°C to + 125°C 250 mV
MAX4484/MAX4486/MAX4487
Single/Dual/Quad, Low-Cost, Single-Supply
7MHz, Rail-to-Rail Op Amps
4 _______________________________________________________________________________________
Typical Operating Characteristics
(VDD = +5V, VSS = 0, VCM = VDD/2, RL= ∞to VDD/2, unless otherwise noted.)
GAIN AND PHASE vs.
FREQUENCY (CL = 0)
FREQUENCY (Hz)
100 100k 1M 10M1k 10k 100M
GAIN (dB) PHASE (DEGREES)
80
-200
-160
-120
-80
-40
40
0
MAX4484 toc01
AVCL = +1000
PHASE
GAIN
GAIN AND PHASE vs.
FREQUENCY WITH CAPACITIVE LOAD
FREQUENCY (Hz)
100 100k 1M 10M1k 10k 100M
GAIN (dB) PHASE (DEGREES)
80
-200
-160
-120
-80
-40
40
0
MAX4484 toc02
GAIN
PHASE
CL = 100pF
AVCL = +1000
10 100k 10M1k100 10k 1M
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
MAX4484 toc03
FREQUENCY (Hz)
PSRR (dB)
-30
-20
-10
0
-70
-60
-50
-40
-80
1
0
0.5
1.0
1.5
2.0
2.5
3.0
-40 0-20 20 40 60 80 100 120
SUPPLY CURRENT vs. TEMPERATURE
MAX4484 toc04
TEMPERATURE (°C)
CURRENT (mA)
0.01
1
0.1
100
10
1k
10k
100 10k1k 100k 1M 10M
OUTPUT IMPEDANCE vs. FREQUENCY
MAX4484 toc05
FREQUENCY (Hz)
OUTPUT IMPEDANCE (Ω)
0
0.2
0.1
0.5
0.4
0.3
0.7
0.8
0.6
0.9
-40 20 40-20 0 60 80 100 120
INPUT OFFSET VOLTAGE
vs. TEMPERATURE
MAX4484 toc06
TEMPERATURE (°C)
VOS (mV)
10
15
20
25
30
35
40
-40 0-20 20 40 60 80 100 120
OUTPUT VOLTAGE HIGH
vs. TEMPERATURE
MAX4484 toc07
TEMPERATURE (°C)
|VDD - VOUT| (mV)
RL = 2k
0
2
4
6
8
10
12
-40 0-20 20 40 60 80 100 120
OUTPUT VOLTAGE LOW
vs. TEMPERATURE
MAX4484 toc08
TEMPERATURE (°C)
|VOUT - VSS| (mV)
R
L
= 2k
NONINVERTING SMALL-
SIGNAL TRANSIENT RESPONSE
MAX4484 toc09
1µs/div
IN
OUT
50mV/div
MAX4484/MAX4486/MAX4487
Single/Dual/Quad, Low-Cost, Single-Supply
7MHz, Rail-to-Rail Op Amps
_______________________________________________________________________________________ 5
NONINVERTING LARGE-SIGNAL
TRANSIENT RESPONSE
MAX4484 toc10
400ns/div
IN
OUT
2V/div
10
15
25
20
30
35
04020 60 80 100 120
PERCENT OVERSHOOT
vs. CAPACITIVE LOAD
MAX4484 toc11
CLOAD (pF)
PERCENT OVERSHOOT (%)
POSITIVE
NEGATIVE
40
60
50
80
70
100
90
110
0 100 15050 200 250 300
LARGE-SIGNAL GAIN
vs. OUTPUT VOLTAGE LOW
MAX4484 toc12
|VOUT - VSS| (mV)
GAIN (dB)
RL = 100k
RL = 2k
40
60
50
80
70
100
90
110
0 100 15050 200 250 300
LARGE-SIGNAL GAIN
vs. OUTPUT VOLTAGE HIGH
MAX4484 toc13
|VDD - VOUT| (mV)
GAIN (dB)
RL = 100k
RL = 2k
-60
-40
-50
-20
-30
-10
0
100 1k 10k 100k 1M 10M 100M
CROSSTALK vs. FREQUENCY
MAX4484 toc14
FREQUENCY (Hz)
CROSSTALK (dB)
-90
-70
-80
60
70
65
80
75
85
90
1.0 1.5 2.0 2.5 3.0
POWER-SUPPLY REJECTION RATIO
vs. OPERATING VOLTAGE
MAX4484 toc15
SUPPLY VOLTAGE (V)
PSRR (dB)
45
55
50
40
TA = +125°C
TA = -40°C
TA = +25°C
Typical Operating Characteristics (continued)
(VDD = +5V, VSS = 0, VCM = VDD/2, RL= ∞to VDD/2, unless otherwise noted.)
0.04
0.06
0.08
0.10
0.12
0.14
01.0 1.50.5 2.0 2.5 3.0 3.5
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. AMPLITUDE
MAX4484 toc17
VIN (Vp-p)
THD + N (%)
0.02
0
f = 10kHz
AVCL = +1
RL = 2k
0.04
0.06
0.08
0.10
0.12
0.14
01.0 1.50.5 2.0 2.5 3.0 3.5
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. AMPLITUDE
MAX4484 toc18
VIN (Vp-p)
THD + N (%)
0.02
0
f = 10kHz
AVCL = +1
RL = 100k
MAX4484/MAX4486/MAX4487
Single/Dual/Quad, Low-Cost, Single-Supply
7MHz, Rail-to-Rail Op Amps
6 _______________________________________________________________________________________
Detailed Description
Rail-to-Rail Output Stage
The MAX4484/MAX4486/MAX4487 can drive a 2kΩ
load and still swing within 50mV of the supply rails.
Figure 1 shows the output swing of the MAX4484 con-
figured with AV= +1V/V.
Driving Capacitive Loads
Driving a capacitive load can cause instability in many
op amps, especially those with low quiescent current.
The MAX4484/MAX4486/MAX4487 are unity-gain stable
for a range of capacitive loads up to 100pF. Figure 2
shows the response of the MAX4484 with an excessive
capacitive load. Adding a series resistor between the
output and the load capacitor (Figure 3) improves the
circuit’s response by isolating the load capacitance
from the op amp’s output.
Applications Information
Power Supplies and Layout
The MAX4484/MAX4486/MAX4487 operates from a sin-
gle +2.7V to +5.5V power supply. Bypass the power
supply with 0.1µF capacitor to ground.
Good layout techniques optimize performance by
decreasing the amount of stray capacitance at the op
amp’s inputs and outputs. To decrease stray capaci-
tance, minimize trace lengths by placing external com-
ponents close to the op amp’s pins. Use surface-mount
components for best results.
Pin Description
PIN
MAX4484 MAX4486 MAX4487
NAME FUNCTION
3——IN- Inverting Amplifier Input
1——IN+ Noninverting Amplifier Input
4——OUT Amplifier Output
—2 2 INA- Inverting Amplifier Input (Channel A)
—3 3 INA+ Noninverting Amplifier Input (Channel A)
—1 1 OUTA Amplifier Output (Channel A)
—6 6 INB- Inverting Amplifier Input (Channel B)
—5 5 INB+ Noninverting Amplifier Input (Channel B)
—7 7 OUTB Amplifier Output (Channel B)
—— 9 INC- Inverting Amplifier Input (Channel C)
——10 INC+ Noninverting Amplifier Input (Channel C)
—— 8 OUTC Amplifier Output (Channel C)
——13 IND- Inverting Amplifier Input (Channel D)
——12 IND+ Noninverting Amplifier Input (Channel D)
——14 OUTD Amplifier Output (Channel D)
2 4 11 VSS Negative Power-Supply Voltage
584V
DD Positive Power-Supply Voltage
MAX4484/MAX4486/MAX4487
Single/Dual/Quad, Low-Cost, Single-Supply
7MHz, Rail-to-Rail Op Amps
_______________________________________________________________________________________ 7
1µs/div
IN
50mV/div
OUT
Figure 2. Small-Signal Transient Response with Excessive
Capacitive Load (CL= 270pF)
Figure 1. Rail-to-Rail Output Operation
Chip Information
TRANSISTOR COUNT: MAX4484: 101
MAX4486: 202
MAX4487: 404
RISO
CL
MAX4484
MAX4486
MAX4487
Figure 3. Capacitive-Load-Driving Circuit
400µs/div
1V/div
MAX4484/MAX4486/MAX4487
Single/Dual/Quad, Low-Cost, Single-Supply
7MHz, Rail-to-Rail Op Amps
8 _______________________________________________________________________________________
Package Information
SC70, 5L.EPS
MAX4484/MAX4486/MAX4487
Single/Dual/Quad, Low-Cost, Single-Supply
7MHz, Rail-to-Rail Op Amps
_______________________________________________________________________________________ 9
Package Information (continued)
SOT23, 8L.EPS
MAX4484/MAX4486/MAX4487
Single/Dual/Quad, Low-Cost, Single-Supply
7MHz, Rail-to-Rail Op Amps
10 ______________________________________________________________________________________
Package Information (continued)
SOT5L.EPS
MAX4484/MAX4486/MAX4487
Single/Dual/Quad, Low-Cost, Single-Supply
7MHz, Rail-to-Rail Op Amps
______________________________________________________________________________________ 11
Package Information (continued)
SOICN.EPS
MAX4484/MAX4486/MAX4487
Single/Dual/Quad, Low-Cost, Single-Supply
7MHz, Rail-to-Rail Op Amps
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
© 2000 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.
Package Information (continued)
TSSOP,NO PADS.EPS