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19-1809; Rev 1; 1/01
Single/Dual/Quad, Low-Cost, Single-Supply, Rail-to-Rail Op Amps with Shutdown
General Description
The MAX4480-MAX4483 low-cost, general-purpose op amps offer Rail-to-Rail(R) outputs, draw only 50A of quiescent current, and operate from a single +2.5V to +5.5V supply. For additional power conservation, the MAX4481 offers a low-power shutdown mode that reduces supply current to 0.5A (max) and puts the amplifier's output in a high-impedance state. These devices are unity-gain stable with capacitive loads up to 400pF. The MAX4480- MAX4483 are specified to +125C, making them suitable for use in a variety of harsh environments, such as automotive applications. The MAX4480 is a single amplifier offered in a tiny 5-pin SC70 package. The MAX4481 is a single amplifier with a low-power shutdown mode that reduces supply current to <0.5A and comes in a 6-pin SC70 package. The MAX4482 is a dual amplifier and comes in the space-saving 8-pin SOT23 package. The MAX4483 is a quad amplifier and comes in a 14-pin TSSOP package. All devices are specified for operation across the -40C to +125C automotive temperature range.
Features
o Single +2.5V to +5.5V Supply Voltage Range o 50A Quiescent Current per Amplifier o 0.5A (max) Shutdown Mode (MAX4481) o Available in Space-Saving Packages 5-Pin SC70 (MAX4480) 6-Pin SC70 (MAX4481) 8-Pin SOT23 (MAX4482) o 105dB AVOL with 5k Load o 0.005% THD with 100k Load o Rail-to-Rail Output Voltage Swing o 3.0mA of Sink and Source Load Current o Unity-Gain Stable up to CLOAD = 400pF
MAX4480-MAX4483
Ordering Information
PART 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 -40C to +125C PINPACKAGE 5 SC70 5 SOT23 6 SC70 6 SOT23 8 SOT23 8 SO 8 MAX 14 SO 14 TSSOP TOP MARK ABU ADPJ AAN AAOS AAEJ -- -- -- --
Selector Guide
PART MAX4480 MAX4481 MAX4482 MAX4483 NO. OF AMPLIFIERS PER PACKAGE 1 1 2 4 SHUTDOWN MODE No Yes No No
MAX4480AXK-T MAX4480AUK-T MAX4481AXT-T MAX4481AUT-T MAX4482AKA-T MAX4482ASA MAX4482AUA MAX4483ASD MAX4483AUD
Applications
Single-Supply Zero-Crossing Detectors Instruments and Terminals Portable Communications Electronic Ignition Modules Infrared Receivers Sensor Signal Detection
VSS 2 IN- 3 4 OUT VSS 2 IN- 3 5 SHDN 4 OUT IN+ 1
Pin Configurations
MAX4480
5 VDD IN+ 1
MAX4481
6 VDD
SC70-5/SOT23-5
SC70-6/SOT23-6
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
Pin Configurations continued at end of data sheet. 1
________________________________________________________________ Maxim Integrated Products
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.
Single/Dual/Quad, Low-Cost, Single-Supply, Rail-to-Rail Op Amps with Shutdown MAX4480-MAX4483
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 3.1mW/C above +70C) ............. 247mW 6-Pin SC70 (derate 3.1mW/C above +70C) ..............245mW 5-Pin SOT23 (derate 7.1mW/C above +70C)............571mW 6-Pin SOT23 (derate 8.7mW/C above +70C)............696mW 8-Pin SOT23 (derate 9.1mW/C above +70C)............727mW 8-Pin MAX (derate 4.5mW/C above +70C) ............ 362mW 8-Pin SO (derate 5.88mW/C above +70C)............... 471mW 14-Pin TSSOP (derate 9.03mW/C above +70C) .......727mW 14-Pin SO (derate 8.33mW/C above +70C)............. 667mW Operating Temperature Range .........................-40C to +125C Junction Temperature ........................................................150C 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 1M connected to VDD/2, SHDN = VDD (MAX4481 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 SYMBOL VDD IDD ISHDN VOS IB IOS RIN VCM CMRR PSRR (Note 1) (Note 1) Differential or common mode Inferred from CMRR test VSS VCM VDD - 1.3V 2.5V VDD 5.5V VSS + 0.02V VOUT VDD - 0.03V VSS + 0.10V VOUT VDD - 0.20V Specified as VDD - VOUT Specified as VOUT - VSS Sourcing Sinking Device in shutdown mode, SHDN = VSS, VSS < VOUT < VCC (MAX4481 only) MAX4481 only MAX4481 only SHDN = VDD or VSS (MAX4481 only) 0.7 VDD 0.001 1 140 500 RL = 100k RL = 5k RL = 100k RL = 5k RL = 100k RL = 5k 94 VSS 71 82 86 92 110 dB 105 4 80 1 8 3 17 0.01 0.1 30 150 mV mV mA A V V nA kHz VDD = 2.5V VDD = 5.0V SHDN = VSS (MAX4481 only) CONDITIONS Inferred from PSRR test MIN 2.5 45 50 0.05 1 0.1 0.1 1000 VDD - 1.3 100 0.5 5.5 100 100 TYP MAX 5.5 UNITS V A A mV pA pA M V dB dB
Large-Signal Voltage Gain
AVOL
Output Voltage High Output Voltage Low Output Short-Circuit Current
VOH VOL ISC
Shutdown Mode Output Leakage IOUTSHDN SHDN Logic Low SHDN Logic High SHDN Input Current Gain-Bandwidth Product 2 VIL VIH IIL, IIH GBW
0.3 VDD
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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 1M connected to VDD/2, SHDN = VDD (MAX4481 only), TA = +25C, unless otherwise noted.) PARAMETER Phase Margin Gain Margin Slew Rate 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 Settling Time to 0.1% SR en in CLOAD tSHDN tEN tON CIN THD tS f = 1kHz, VOUT = 2Vp-p, AV = +1V/V VOUT = 2V step RL = 100k f = 10kHz f = 10kHz AV = +1V/V MAX4481 only MAX4481 only SYMBOL M CONDITIONS MIN TYP 70 30 80 100 1 400 0.4 12 15 2.0 0.005 50 MAX UNITS degrees dB V/ms nV/Hz fA/Hz pF s s s pF % s
MAX4480-MAX4483
ELECTRICAL CHARACTERISTICS
(VDD = +5V, VSS = 0, VCM = 0, VOUT = VDD/2, RL 1M connected to VDD/2, SHDN = VDD (MAX4481 only), TA = -40C to +125C, unless otherwise noted.) (Note 2) PARAMETER Supply Voltage Range Supply Current per Amplifier Supply Current in Shutdown 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 SYMBOL VDD IDD ISHDN VOS TCVOS IB IOS VCM CMRR PSRR (Note 1) (Note 1) Inferred from CMRR test VSS VCM VDD - 1.4V 2.5V VCC 5.5V Device in shutdown mode, SHDN = VSS, VSS < VOUT < VCC (MAX4481 only) MAX4481 only MAX4481 only SHDN = VDD or VSS (Note 1) (MAX4481 only) VSS + 0.1V VOUT VDD - 0.20V, RL = 5k Specified as VDD - VOUT, RL = 5k 84 200 0.7 VDD 1 -40C to +85C +85C to +125C VSS 67 77 0.5 A 2.5 0.3 VDD V V A dB mV mV 3 100 100 VDD - 1.4 SHDN = VSS, (MAX4481 only) CONDITIONS Inferred from PSRR test MIN 2.5 TYP MAX 5.5 120 1.0 9 UNITS V A A mV V/C pA pA V dB dB
Shutdown Mode Output Leakage IOUTSHDN
SHDN Logic Low SHDN Logic High SHDN Input Current Large-Signal Voltage Gain Output Voltage High
VIL VIH IIL, IIH AVOL VOH
50 Output Voltage Low VOL Specified as VOUT - VSS, RL = 5k Note 1: Guaranteed by design. Note 2: Specifications are 100% tested at TA = +25C (exceptions noted). All temperature limits are guaranteed by design.
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3
Single/Dual/Quad, Low-Cost, Single-Supply, Rail-to-Rail Op Amps with Shutdown MAX4480-MAX4483
Typical Operating Characteristics
(VDD = +5V, VSS = 0, VCM = VDD/2, V SHDN = 5V, RL 1M 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
MAX4480 toc01
GAIN AND PHASE vs. FREQUENCY (CL = 400pF)
MAX4480 toc02
POWER-SUPPLY REJECTION RATIO vs. FREQUENCY
MAX4480 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
AVCL = +1000V/V -110 10 100 1k 10k 100k 1M 10 100 1k 10k 100k 1M FREQUENCY (Hz) FREQUENCY (Hz)
FREQUENCY (Hz)
OUTPUT IMPEDANCE vs. FREQUENCY
MAX4480 toc4
SUPPLY CURRENT vs. TEMPERATURE
MAX4480 toc05
MAX4481 SHUTDOWN SUPPLY CURRENT vs. TEMPERATURE
VSHDN = VSS
MAX4480 toc06
1000
60 58 56 SUPPLY CURRENT (A) 54 52 50 48 46 44 42
100k
100 OUTPUT IMPEDANCE ()
10k SUPPLY CURRENT (pA)
10
1k
1
100
0.1
10
0.01 1 10 100 1k 10k 100k 1M FREQUENCY (Hz)
40 -40 -20 0 20 40 60 80 100 120 TEMPERATURE (C)
1 -40 -20 0 20 40 60 80 100 120 TEMPERATURE (C)
MAX4481 OUTPUT LEAKAGE CURRENT vs. TEMPERATURE
MAX4480 toc07
INPUT OFFSET VOLTAGE vs. TEMPERATURE
MAX4480 toc08
OUTPUT VOLTAGE SWING HIGH vs. TEMPERATURE
RL = 5k to VDD/2 90 VDD - VOUT (mV) 80 70 60 50 40
MAX4480 toc09
1000k VSHDN = VSS VOUT = VDD/2 100k
1500 1000 500
100
ILEAK (pA)
VOS (V)
10k
0
1k
-500 100 10 -40 -20 0 20 40 60 80 100 120 TEMPERATURE (C) -1000 -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 1M connected to VDD/2, TA = +25C, unless otherwise noted.)
OUTPUT VOLTAGE SWING LOW vs. TEMPERATURE
MAX4480 toc10
MAX4480-MAX4483
COMMON-MODE REJECTION RATIO vs. TEMPERATURE
MAX4480 toc11
LARGE-SIGNAL GAIN vs. OUTPUT VOLTAGE
125 120 115 RL = 5k to VDD/2
MAX4480 toc12
11 RL = 5k to VDD/2 10 9 VOUT - VSS (mV)
-80
130
-82
CMRR (dB)
8 7 6
GAIN (dB) -40 -20 0 20 40 60 80 100 120
-84
110 105 100 95
-86
-88 5 4 -40 -20 0 20 40 60 80 100 120 TEMPERATURE (C) -90 TEMPERATURE (C)
90 85 80 0.5 1.0 1.5 2.0 2.5 VOUT (V) 3.0 3.5 4.0 4.5
LARGE-SIGNAL GAIN vs. TEMPERATURE
MAX4480 toc13
MINIMUM OPERATING VOLTAGE vs. TEMPERATURE
MAX4480 toc14
TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY
RL = 5k VOUT = 2Vp-p AV = +1 BW = 30kHz
MAX4480 toc15
110
2.0 1.9 1.8 1.7 VDD (MIN) 1.6 1.5 1.4 1.3 1.2 1.1
RL = 5k to VDD/2
100
105 GAIN (dB)
10 THD + N (%)
1
100
0.1
95
0.01
90 -40 -20 0 20 40 60 80 100 120 TEMPERATURE (C)
1.0 -40 -20 0 20 40 60 80 100 120 TEMPERATURE (C)
0.001 10 100 1k FREQUENCY (Hz) 10k 100k
TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY
MAX4480 toc16
TOTAL HARMONIC DISTORTION PLUS NOISE vs. INPUT AMPLITUDE
MAX4480 toc17
TOTAL HARMONIC DISTORTION PLUS NOISE vs. INPUT AMPLITUDE
RL = 100k f = 1kHz BW = 22kHz
MAX4480 toc18
100 RL = 100k VOUT = 2Vp-p AV = +1 BW = 30kHz
100 RL = 5k f = 1kHz BW = 22kHz
100
10 THD + N (%)
10 THD + N (%)
10 THD + N (%)
1
1
1
0.1
0.1
0.1
0.01 0.001 10 100 1k FREQUENCY (Hz) 10k 100k
0.01
0.01
0.001 0 1 VIN (Vp-p) 2 3
0.001 0 0.5 1.0 1.5 VIN (Vp-p) 2.0 2.5 3.0
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5
Single/Dual/Quad, Low-Cost, Single-Supply, Rail-to-Rail Op Amps with Shutdown MAX4480-MAX4483
Typical Operating Characteristics (continued)
(VDD = +5V, VSS = 0, VCM = VDD/2, V SHDN = 5V, RL 1M connected to VDD/2, TA = +25C, unless otherwise noted.)
NONINVERTING SMALL-SIGNAL TRANSIENT RESPONSE
MAX4480 toc19
CAPACITIVE-LOAD STABILITY
20 AV = +1V/V TA = +25C RL // CL UNSTABLE REGION 10
MAX4480 roc20
15 CAPACITIVE LOAD (nF)
IN
AV = 1V/V RL = 5k
50mV/div
5
STABLE REGION
OUT
0 1k 10k RESISTIVE LOAD () 100k 20s/div
NONINVERTING LARGE-SIGNAL TRANSIENT RESPONSE
MAX4480 roc21
PERCENT OVERSHOOT vs. CAPACITIVE LOAD
MAX4480 toc22
25 POSITIVE OVERSHOOT
IN OVERSHOOT (%)
20
15
1V/div
10
OUT AV = 1V/V RL = 5k 100s/div
5
NEGATIVE OVERSHOOT
0 0 100 200 300 CLOAD (pF) 400 500 600
CHANNEL-TO-CHANNEL ISOLATION vs. FREQUENCY
MAX4480 toc23
SUPPLY CURRENT vs. SUPPLY VOLTAGE
VOUT = VDD/2 50 SUPPLY CURRENT (A) 40 30 20 10 0
MAX4480 toc24
120 CHANNEL-TO-CHANNEL ISOLATION (dB) 110 100 90 80 70 60 50 40 30 20 10 100 1k 10k 100k 1M FREQUENCY (kHz)
60
0
1
2
3
4
5
6
SUPPLY VOLTAGE (V)
6
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Single/Dual/Quad, Low-Cost, Single-Supply, Rail-to-Rail Op Amps with Shutdown
Pin Description
PIN NAME MAX4480 1 -- -- -- -- 2 3 -- -- -- -- 4 -- -- -- -- 5 -- MAX4481 1 -- -- -- -- 2 3 -- -- -- -- 4 -- -- -- -- 6 5 MAX4482 -- 3 5 -- -- 4 -- 2 6 -- -- -- 1 7 -- -- 8 -- MAX4483 -- 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 single-supply operation. Use a 0.01F bypass capacitor to GND. 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. Use a 0.01F bypass capacitor to GND. Active-Low Shutdown Input. Connect to VDD for normal operation. Do not leave floating. FUNCTION
MAX4480-MAX4483
Detailed Description
Rail-to-Rail Output Stage
The MAX4480-MAX4483 can drive a 5k load and still typically swing within 80mV of the supply rails. Figure 1 shows the MAX4480 output voltage swing 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 MAX4480-MAX4483 are unity-gain stable for a range of capacitive loads to above 400pF. Figure 2 shows the MAX4480 response 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 MAX4480-MAX4483
RISO
50mV/div
CL MAX4480 MAX4481 MAX4482 MAX4483
CL = 1nF 20s/div
Figure 2. Small-Signal Transient Response with Excessive Capacitive Load
Figure 3. Capacitive-Load-Driving Circuit
VDD 2V/div
2V/div OUT 1V/div
RL = 10M TO VSS, CL = 25pF 400s/div 4s/div
Figure 4. Shutdown Waveform
Figure 5. Power-Up/Down Waveform
circuit's response by isolating the load capacitance from the op amp's output.
Power Supplies and Layout
The MAX4480-MAX4483 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 MAX4481 features a low-power shutdown mode. When SHDN goes low, the supply current drops to 0.05A (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.
Power-Up
The MAX4480-MAX4483 outputs typically settle within 50s after power-up. Figure 5 shows the output voltage on power-up and power-down.
Chip Information
MAX4480/MAX4481 TRANSISTOR COUNT: 111 MAX4482 TRANSISTOR COUNT: 209 MAX4483 TRANSISTOR COUNT: 407
8
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Single/Dual/Quad, Low-Cost, Single-Supply, Rail-to-Rail Op Amps with Shutdown
Pin Configurations (continued)
MAX4480-MAX4483
MAX4483 OUTA 1 MAX4482 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
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 MAX4480-MAX4483
Package Information (continued)
SC70, 6L.EPS
10
______________________________________________________________________________________
SOT23, 8L.EPS
Single/Dual/Quad, Low-Cost, Single-Supply, Rail-to-Rail Op Amps with Shutdown
Package Information (continued)
SOT5L.EPS
MAX4480-MAX4483
______________________________________________________________________________________
6LSOT.EPS
11
Single/Dual/Quad, Low-Cost, Single-Supply, Rail-to-Rail Op Amps with Shutdown MAX4480-MAX4483
Package Information (continued)
8LUMAXD.EPS
12
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Single/Dual/Quad, Low-Cost, Single-Supply, Rail-to-Rail Op Amps with Shutdown
Package Information (continued)
TSSOP,NO PADS.EPS
MAX4480-MAX4483
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.
13 ____________________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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