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19-1599; Rev 3; 8/01
Single/Dual/Quad, Low-Cost, Single-Supply, Rail-to-Rail Op Amps with Shutdown
General Description
The MAX4400-MAX4403 low-cost, general-purpose op amps offer Rail-to-Rail(R) outputs, draw only 320A of quiescent current, and operate from a single +2.5V to +5.5V supply. For additional power conservation, the MAX4401 offers a low-power shutdown mode that reduces supply current to 1A (max) and puts the amplifier's output in a high-impedance state. These devices deliver 1.4mA of output current and are unity-gain stable with a 1MHz gainbandwidth product driving capacitive loads up to 400pF. The MAX4400-MAX4403 are specified to +125C, making them suitable for use in a variety of harsh environments, such as automotive applications. The MAX4400 single amplifier is available in ultra-small 5-pin SC70 and space-saving 5-pin SOT23 packages. The single MAX4401 includes the shutdown feature and is available in a 6-pin SC70. The MAX4402 is a dual amplifier available in 8-pin SOT23 and SO packages. The MAX4403 quad amplifier is packaged in a 14-pin TSSOP or SO.
Features
o Single +2.5V to +5.5V Supply Voltage Range o 320A Quiescent Current per Amplifier o 1A (max) Shutdown Mode (MAX4401) o Available in Space-Saving Packages 5-Pin SC70 (MAX4400) 6-Pin SC70 (MAX4401) 8-Pin SOT23 (MAX4402) o 110dB AVOL with 2k Load o 0.015% THD with 2k Load o Rail-to-Rail Output Voltage Swing o 1.4mA of Sink and Source Load Current o Unity-Gain Stable up to CLOAD = 400pF o Ground-Sensing Inputs
MAX4400-MAX4403
Applications
Single-Supply, Zero-Crossing Detectors Instruments and Terminals Portable Communications Electronic Ignition Modules Infrared Receivers Sensor Signal Detection
PART MAX4400AXK-T MAX4400AUK-T MAX4401AXT-T MAX4402AKA-T MAX4402AUA MAX4402ASA MAX4403AUD MAX4403ASD
Ordering Information
TEMP RANGE -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C PINPACKAGE 5 SC70-5 5 SOT23-5 6 SC70-6 8 SOT23-8 8 MAX 8 SO 14 TSSOP 14 SO TOP MARK AAG ADNP AAB AADI -- -- -- --
Selector Guide
PART MAX4400 MAX4401 MAX4402 MAX4403 NO. OF AMPLIFIERS PER PACKAGE 1 1 2 4 SHUTDOWN MODE No Yes No No
VSS 2 IN- 3 IN+ 1
Pin Configurations
MAX4400
5 VDD IN+ 1 VSS 2 4 OUT IN- 3
MAX4401
6 VDD 5 SHDN 4 OUT
SC70-5/SOT23-5
SC70-6
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
Pin Configurations continued at end of data sheet.
________________________________________________________________ Maxim Integrated Products
1
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Single/Dual/Quad, Low-Cost, Single-Supply, Rail-to-Rail Op Amps with Shutdown MAX4400-MAX4403
ABSOLUTE MAXIMUM RATINGS
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 VSS or VDD................................... Continuous Continuous Power Dissipation (TA = +70C) 5-Pin SC70 (derate 2.5mW/C above +70C) ............. 200mW 5-Pin SOT23 (derate 7.1mW/C above +70C)............571mW 6-Pin SC70 (derate 2.27mW/C above +70C) ............181mW 8-Pin SOT23 (derate 7.52mW/C above +70C)..........602mW 8-Pin MAX (derate 4.5mW/C above +70C) ............ 362mW 8-Pin SO (derate 5.88mW/C above +70C)............... 471mW 14-Pin TSSOP (derate 8.33mW/C above +70C) ...... 667mW 14-Pin SO (derate 8.33mW/C above +70C)............. 667mW Operating Temperature Range .........................-40C to +125C Storage Temperature Range .............................-65C to +150C Lead Temperature (soldering, 10s) .................................+300C
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.
ELECTRICAL CHARACTERISTICS
(VDD = +5V, VSS = 0, VCM = 0, VOUT = VDD/2, RL = connected to VDD/2, SHDN = VDD (MAX4401 only), TA = +25C, unless otherwise noted.) PARAMETER Supply Voltage Range Supply Current per Amplifier Supply Current in Shutdown Input Offset Voltage Input Bias Current Input Offset Current Input Resistance Input Common-Mode Voltage Range Common-Mode Rejection Ratio Power-Supply Rejection Ratio Large-Signal Voltage Gain Output Voltage High Output Voltage Low Output Short-Circuit Current Shutdown Mode Output Leakage SHDN Logic Low SHDN Logic High SHDN Input Current Gain-Bandwidth Product Phase Margin Gain Margin Slew Rate 2 SR IOUTSHDN VIL VIH IIL, IIH GBW M SYMBOL VDD IDD ISHDN VOS IB IOS RIN VCM CMRR PSRR AVOL VOH VOL VDD = 2.5V VDD = 5.0V SHDN = VSS (Note 1) MAX4400/MAX4401 MAX4402/MAX4403 (Note 2) (Note 2) Differential or common mode Inferred from CMRR test VSS VCM VDD - 1.4V 2.5V VDD 5.5V VSS + 0.3V VOUT VDD - 0.3V Specified as |VDD - VOH| Specified as |VSS - VOL| Sourcing Sinking Device in shutdown mode, SHDN = VSS, VSS < VOUT < VCC (Note 1) (Note 1) (Note 1) SHDN = VDD or VSS (Note 1) 0.7 VDD 0.001 800 70 20 1 500 RL = 100k RL = 2k RL = 100k RL = 2k RL = 100k RL = 2k 90 VSS 68 78 84 100 120 110 3 55 2 30 12 30 1.0 0.3 VDD 75 200 CONDITIONS Inferred from PSRR test MIN 2.5 320 410 0.00002 0.8 1.0 0.1 0.1 1000 VDD - 1.4 700 1 4.5 5.5 100 100 TYP MAX 5.5 UNITS V A A mV pA pA G V dB dB dB mV mV mA A V V nA kHz degrees dB V/s
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Single/Dual/Quad, Low-Cost, Single-Supply, Rail-to-Rail Op Amps with Shutdown
ELECTRICAL CHARACTERISTICS (continued)
(VDD = +5V, VSS = 0, VCM = 0, VOUT = VDD/2, RL = connected to VDD/2, SHDN = VDD (MAX4401 only), TA = +25C, unless otherwise noted.) PARAMETER Input Voltage Noise Density Input Current Noise Density Capacitive-Load Stability Shutdown Delay Time Enable Delay Time Power-On Time Input Capacitance Total Harmonic Distortion Total Harmonic Distortion Settling Time to 0.1% SYMBOL en in CLOAD tSHDN tEN tON CIN THD tS f = 10kHz, VOUT = 2Vp-p, AV = +1V/V VOUT = 2V step RL = 100k RL = 2k f = 10kHz f = 10kHz AV = +1V/V (Note 1) (Note 1) CONDITIONS MIN TYP 36 1 400 0.4 6 5 2.5 0.009 0.015 7 MAX UNITS nV/Hz fA/Hz pF s s s pF % s
MAX4400-MAX4403
ELECTRICAL CHARACTERISTICS
(VDD = +5V, VSS = 0, VCM = 0, VOUT = VDD/2, RL = connected to VDD/2, TA = -40C to +125C, unless otherwise noted.) (Note 3) PARAMETER Supply Voltage Range Supply Current per Amplifier Input Offset Voltage Input Offset Voltage Drift Input Bias Current Input Offset Current Input Common-Mode Voltage Range Common-Mode Rejection Ratio Power-Supply Rejection Ratio Shutdown Mode Output Leakage SHDN Logic Low SHDN Logic High SHDN Input Current Large-Signal Voltage Gain Output Voltage High Output Voltage Low SYMBOL VDD IDD VOS TCVOS IB IOS VCM CMRR PSRR (Note 2) (Note 2) Inferred from CMRR test VSS VCM VDD - 1.5V VSS VCM VDD - 1.0V TA = -20C to +125C 2.5V VCC 5.5V Device in shutdown mode, SHDN = VSS, VSS < VOUT < VDD (Note 1) (Note 1) (Note 1) SHDN = VDD or VSS (Notes 1, 2) VSS + 0.3V VOUT VDD - 0.3V, RL = 2k Specified as |VDD - VOH|, RL = 2k Specified as |VSS - VOL|, RL = 2k 85 250 100 0.7 VDD 1000 TA = -40C to +85C TA = +85C to +125C VSS 65 50 74 1.0 A 5.0 0.3 VDD V V nA dB mV mV MAX4400/MAX4401 MAX4402/MAX4403 1 100 100 VDD - 1.5 CONDITIONS Inferred from PSRR test MIN 2.5 TYP MAX 5.5 800 6.5 8.0 UNITS V A mV V/C pA pA V dB dB
IOUTSHDN
VIL VIH IIL, IIH AVOL VOH VOL
Note 1: Shutdown mode is only available in the 6-pin SC70 single op amp (MAX4401). Note 2: Guaranteed by design. Note 3: Specifications are 100% tested at TA = +25C (exceptions noted). All temperature limits are guaranteed by design. _______________________________________________________________________________________ 3
Single/Dual/Quad, Low-Cost, Single-Supply, Rail-to-Rail Op Amps with Shutdown MAX4400-MAX4403
Typical Operating Characteristics
(VDD = +5V, VSS = 0, VCM = VDD/2, V SHDN = 5V, RL = connected to VDD/2, TA = +25C, unless otherwise noted.)
GAIN AND PHASE vs. FREQUENCY (NO LOAD)
80 60 40 20 0 -20 -40 -60 -80 -100 -120 -140 -160 -180 1 80 60 40 20 0 -20 -40 -60 -80 -100 -120 -140 -160 -180 1
MAX4400 toc01
GAIN AND PHASE vs. FREQUENCY (CL = 400pF)
MAX4400 toc02
POWER-SUPPLY REJECTION RATIO vs. FREQUENCY
MAX4400 toc03
10 -10 -30 PSRR (dB) -50 -70 -90
GAIN (dB)/PHASE (degrees)
GAIN (dB)/PHASE (degrees)
AVCL = +1000V/V 10 100 1k 10k 100k 1M 10M
AVCL = +1000V/V -110 10 100 1k 10k 100k 1M 10M 10 100 1k 10k 100k 1M FREQUENCY (Hz) FREQUENCY (Hz)
FREQUENCY (Hz)
OUTPUT IMPEDANCE vs. FREQUENCY
MAX4400 toc4
SUPPLY CURRENT vs. TEMPERATURE
MAX4400 toc05
MAX4401 SHUTDOWN SUPPLY CURRENT vs. TEMPERATURE
VSHDN = VSS
MAX4400 toc06
1000 100 OUTPUT IMPEDANCE () 10 1 0.1 0.01 0.001 10 100 1k 10k 100k
500
100k
SUPPLY CURRENT (A)
SUPPLY CURRENT (pA) -40 -20 0 20 40 60 80 100 120
450
10k
1k
400
100
350
10 300 1M FREQUENCY (Hz) TEMPERATURE (C)
1 -40 -20 0 20 40 60 80 100 120 TEMPERATURE (C)
MAX4401 OUTPUT LEAKAGE CURRENT vs. TEMPERATURE
MAX4400 toc07
INPUT OFFSET VOLTAGE vs. TEMPERATURE
MAX4400 toc08
OUTPUT VOLTAGE SWING HIGH vs. TEMPERATURE
RL = 2k to VDD/2 60 50 VDD - VOH (mV)
MAX4400 toc09
1M
VSHDN = VSS VOUT = VDD/2
1500 1000 500 VOS (V) 0
70
1k ILEAK (pA)
40 30 20 10 0
10
-500 -1000
0.1 -40 -20 0 20 40 60 80 100 120 TEMPERATURE (C)
-1500 -40 -20 0 20 40 60 80 100 120 TEMPERATURE (C)
-40 -20
0
20
40
60
80
100 120
TEMPERATURE (C)
4
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Single/Dual/Quad, Low-Cost, Single-Supply, Rail-to-Rail Op Amps with Shutdown
Typical Operating Characteristics (continued)
(VDD = +5V, VSS = 0, VCM = VDD/2, V SHDN = 5V, RL = connected to VDD/2, TA = +25C, unless otherwise noted.)
OUTPUT VOLTAGE SWING LOW vs. TEMPERATURE
MAX4400 toc10
MAX4400-MAX4403
COMMON-MODE REJECTION RATIO vs. TEMPERATURE
MAX4400 toc11
LARGE-SIGNAL GAIN vs. OUTPUT VOLTAGE
RL = 2k 120 100 GAIN (dB) 80 60 40 20
MAX4400 toc12
50 RL = 2k to VDD/2 40 VOL - VEE (mV)
-60
140
-70 CMRR (dB)
30
-80
20
10
-90
0 -40 -20 0 20 40 60 80 100 120 TEMPERATURE (C)
-100 -40 -20 0 20 40 60 80 100 120 TEMPERATURE (C)
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 VOUT (V)
LARGE-SIGNAL GAIN vs. TEMPERATURE
RL = 2k 135 130 GAIN (dB) VMIN (V) 125 120 115 110 105 100 -40 -20 0 20 40 60 80 100 120 TEMPERATURE (C) 1.0 1.5
MAX4400 toc13
MINIMUM OPERATING VOLTAGE vs. TEMPERATURE
MAX4400 toc14
TOTAL HARMONIC DISTORTION vs. FREQUENCY
RL = 2k VOUT = 2Vp-p AV = +1 0.01
MAX4400 toc15
140
3.0
0.1
2.5 THD (%) 0.001 0.0001 -40 -20 0 20 40 60 80 100 120 10
2.0
100
1k FREQUENCY (Hz)
10k
100k
TEMPERATURE (C)
TOTAL HARMONIC DISTORTION vs. FREQUENCY
MAX4400 toc16
TOTAL HARMONIC DISTORTION PLUS NOISE vs. INPUT AMPLITUDE
MAX4400 toc17
TOTAL HARMONIC DISTORTION PLUS NOISE vs. INPUT AMPLITUDE
RL = 100k f = 10kHz BW = 20kHz
MAX4400 toc18
0.01 RL = 100k VOUT = 2Vp-p AV = +1
10
10
1 THD + N (%)
RL = 2k f = 10kHz BW = 20kHz
1 THD + N (%)
THD (%)
0.1
0.1
0.001
0.01
0.01
0.001
0.001
0.0001 10 100 1k FREQUENCY (Hz) 10k 100k
0.0001 0 0.5 1.0 1.5 VIN (Vp-p) 2.0 2.5 3.0
0.0001 0 0.5 1.0 1.5 VIN (Vp-p) 2.0 2.5 3.0
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Single/Dual/Quad, Low-Cost, Single-Supply, Rail-to-Rail Op Amps with Shutdown MAX4400-MAX4403
Typical Operating Characteristics (continued)
(VDD = +5V, VSS = 0, VCM = VDD/2, V SHDN = 5V, RL = connected to VDD/2, TA = +25C, unless otherwise noted.)
CAPACITIVE-LOAD STABILITY
MAX4400 toc19
NONINVERTING SMALL-SIGNAL TRANSIENT RESPONSE
AV = +1V/V RL = 2k
MAX4400 toc20
2000 AV = +1 TA = +25C 1500 CAPACITIVE LOAD (pF) UNSTABLE REGION 1000 STABLE REGION 500
IN
50mV/div
OUT
0 1k 10k RESISTIVE LOAD () 100k 2s/div
NONINVERTING LARGE-SIGNAL TRANSIENT RESPONSE
MAX4400 toc21
PERCENT OVERSHOOT vs. CAPACITIVE LOAD
NEGATIVE OVERSHOOT 25 OVERSHOOT (%) IN 20 15 10 5 POSITIVE OVERSHOOT 0
MAX4400 toc22
AV = +1V/V RL = 2k
30
2V/div
OUT
10s/div
0
100
200
300 CLOAD (pF)
400
500
600
SUPPLY CURRENT vs. SUPPLY VOLTAGE
MAX4400 toc24
MAX4402/MAX4403 CHANNEL-TO-CHANNEL ISOLATION vs. FREQUENCY
CHANNEL-TO-CHANNEL ISOLATION (dB) 120 110 100 90 80 70 60 50 0.01 0.1 1 10 100 1000
MAX4400 toc25
450 400 SUPPLY CURRENT (A) 350 300 250 200 150 100 50 0 0 1 2 3 4 5 6 SUPPLY VOLTAGE (V) VOUT = VDD/2
130
FREQUENCY (kHz)
6
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Single/Dual/Quad, Low-Cost, Single-Supply, Rail-to-Rail Op Amps with Shutdown
Pin Description
PIN NAME MAX4400 1 -- -- -- -- 2 3 -- -- -- -- 4 -- -- -- -- 5 -- MAX4401 1 -- -- -- -- 2 3 -- -- -- -- 4 -- -- -- -- 6 5 MAX4402 -- 3 5 -- -- 4 -- 2 6 -- -- -- 1 7 -- -- 8 -- MAX4403 -- 3 5 10 12 11 -- 2 6 9 13 -- 1 7 8 14 4 -- IN+ INA+ INB+ INC+ IND+ VSS ININAINBINCINDOUT OUTA OUTB OUTC OUTD VDD SHDN Noninverting Amplifier Input Noninverting Amplifier Input A Noninverting Amplifier Input B Noninverting Amplifier Input C Noninverting Amplifier Input D Negative Supply. Connect to ground for singlesupply operation Inverting Amplifier Input Inverting Amplifier Input A Inverting Amplifier Input B Inverting Amplifier Input C Inverting Amplifier Input D Amplifier Output Amplifier Output A Amplifier Output B Amplifier Output C Amplifier Output D Positive Supply Active-Low Shutdown Input. Connect to VDD for normal operation. Do not leave floating. FUNCTION
MAX4400-MAX4403
Detailed Description
Rail-to-Rail Output Stage
The MAX4400-MAX4403 can drive a 2k load and still typically swing within 55mV of the supply rails. Figure 1 shows the output voltage swing of the MAX4400 configured with AV = +10V/V.
1V/div
Driving Capacitive Loads
Driving a capacitive load can cause instability in many op amps, especially those with low quiescent current. The MAX4400-MAX4403 are unity-gain stable for a range of capacitive loads to above 400pF. Figure 2 shows the response of the MAX4400 with an excessive capacitive load. Adding a series resistor between the output and the load capacitor (Figure 3) improves the
100s/div
Figure 1. Rail-to-Rail Output Operation 7
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Single/Dual/Quad, Low-Cost, Single-Supply, Rail-to-Rail Op Amps with Shutdown MAX4400-MAX4403
IN
RISO
50mV/div
CL MAX4400 MAX4401 MAX4402 MAX4403
OUT
2s/div
Figure 2. Small-Signal Transient Response with Excessive Capacitive Load
Figure 3. Capacitive-Load-Driving Circuit
SHDN
VDD 2V/div
2V/div OUT 1V/div OUT RL = 10M TO GND CL = 25pF 400s/div 10s/div
Figure 4. Shutdown Waveform
Figure 5. Power-Up/Power-Down Waveform
circuit's response by isolating the load capacitance from the op amp's output.
Power Supplies and Layout
The MAX4400-MAX4403 operate from a single +2.5V to +5.5V power supply. Bypass the power supply with a 0.1F 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 capacitance, minimize trace lengths by placing external components close to the op amp's pins.
Applications Information
Shutdown Mode
The MAX4401 features a low-power shutdown mode. When SHDN goes low, the supply current drops to 20pA (typ) and the output enters a high-impedance state. Pull SHDN high to enable the amplifier. Do not leave SHDN floating. Figure 4 shows the shutdown waveform.
Chip Information
MAX4400/MAX4401 TRANSISTOR COUNT: 101 MAX4402 TRANSISTOR COUNT: 202 MAX4403 TRANSISTOR COUNT: 404
Power-Up
The MAX4400-MAX4403 outputs typically settle within 5s after power-up. Figure 5 shows the output voltage on power-up and power-down.
8
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Single/Dual/Quad, Low-Cost, Single-Supply, Rail-to-Rail Op Amps with Shutdown
Pin Configurations (continued)
MAX4403 OUTA 1 MAX4402 INA- 2 OUTA 1 INA- 2 INA+ 3 VSS 4 8 VDD INA+ 3 7 OUTB VDD 4 6 INBINB+ 5 5 INB+ INB- 6 OUTB 7 10 INC+ 9 INC8 OUTC 11 VSS 12 IND+ 13 IND14 OUTD
MAX4400-MAX4403
SOT23-8/SO/MAX
TSSOP/SO
Package Information
SC70, 5L.EPS
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9
Single/Dual/Quad, Low-Cost, Single-Supply, Rail-to-Rail Op Amps with Shutdown MAX4400-MAX4403
Package Information (continued)
SC70, 6L.EPS
10
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Single/Dual/Quad, Low-Cost, Single-Supply, Rail-to-Rail Op Amps with Shutdown
Package Information (continued)
SOT5L.EPS
MAX4400-MAX4403
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11
Single/Dual/Quad, Low-Cost, Single-Supply, Rail-to-Rail Op Amps with Shutdown MAX4400-MAX4403
Package Information (continued)
SOT23, 8L.EPS
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 (c) 2001 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.

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