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19-1797; Rev 1; 10/01
SC70, Low-Power, General-Purpose, Dual-Supply, Rail-to-Rail Op Amps
General Description
The MAX4493/MAX4494/MAX4495 single/dual/quad general-purpose operational amplifiers are designed for use in systems powered with dual supplies from 2.25V to 5.5V. These op amps provide a unity-gain bandwidth of 5MHz with only 770A of quiescent current per amplifier. The wide input common-mode range extends from 200mV beyond the negative rail to within 1.5V of the positive supply rail while the output swings within 10mV (RL = 100k) of either rail. These amplifiers have excellent (110dB) open-loop gain with very low THD+N of 0.002% (f = 1kHz). The single MAX4493 is available in a tiny 5-pin SC70 package and the dual MAX4494 is available in the spacesaving 8-pin SOT23. The quad MAX4495 is available in both 14-pin TSSOP and 14-pin SO packages. All products are rated at the automotive temperature range of -40C to +125C. o 770A Supply Current per Amplifier o Operates from Dual 2.25V to 5.5V Supplies o 5MHz Gain-Bandwidth Product o Rail-to-Rail(R) Output Swing o Input Voltage Range Extends 200mV Below the Negative Rail o 110dB Open-Loop Gain (RL = 100k) o Low THD+N of 0.002% (f = 1kHz) o No Phase Reversal for Overdriven Inputs o Unity-Gain Stable o Available in Space-Saving Packages 5-Pin SC70 (MAX4493) 8-Pin SOT23 (MAX4494) 14-Pin TSSOP (MAX4495)
Features
MAX4493/MAX4494/MAX4495
________________________Applications
Battery-Powered Systems DAC Output Amplifiers Industrial Control Systems Voltage Reference Generators Signal Conditioning
Ordering Information
PART MAX4493AXK-T MAX4493AUK-T MAX4494AKA-T TEMP. RANGE -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 8 SOT23-8 8 MAX 8 SO 14 TSSOP 14 SO TOP MARK ABR ADPG AAEM -- -- -- --
Typical Operating Characteristic
TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY
0.007 0.006 THD + N (%) 0.005 0.004 0.003 0.002 0.001 0 1 10 1k 100 FREQUENCY (Hz) 10k 100k
MAX4493-08
MAX4494AUA MAX4494ASA MAX4495AUD MAX4495ASD
0.008
Pin Configurations
TOP VIEW
IN+ 1 5 VCC
MAX4493
VEE 2
IN- 3
4
OUT
SC70/SOT23-5 Typical Operating Circuit appears at end of data sheet. Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd. ________________________________________________________________ Maxim Integrated Products 1 Pin Configurations continued at end of data sheet.
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.
SC70, Low-Power, General-Purpose, Dual-Supply, Rail-to-Rail Op Amps MAX4493/MAX4494/MAX4495
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (VCC to VEE)................................................+12V Voltage from Any Pin to Ground or Any Other Pin .............................(VEE - 0.3V) to (VCC + 0.3V) Output Short-Circuit Duration to VCC, VEE, or Ground ............................................Continuous Continuous Power Dissipation (TA = +70C) 5-Pin SC70 (derate 3.1mW/C above +70C) ............247mW 5-Pin SOT23 (derate 7.1mW/C above +70C)..........571mW 8-Pin SOT23 (derate 9.1mW/C above +70C)..........727mW 8-Pin MAX (derate 4.5mW/C above +70C) ...........362mW 8-Pin SO (derate 5.9mW/C above +70C)................471mW 14-Pin TSSOP (derate 9.1mW/C above +70C) .......727mW 14-Pin SO (derate 8.3mW/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.
DC ELECTRICAL CHARACTERISTICS
(VCC = +5V, VEE = -5V, RL = 100k to ground, TA = -40C to +125C. Typical values are at TA = +25C, unless otherwise noted.) (Note 1)
PARAMETER Operating Supply Voltage Range Quiescent Supply Current per Amplifier Input Offset Voltage Input Offset Voltage Drift Input Offset Voltage Channel Matching Input Bias Current Input Offset Current Input Resistance Common-Mode Input Voltage Range Common-Mode Rejection Ratio Power-Supply Rejection Ratio Large-Signal Voltage Gain IB IOS Differential mode (-1V VIN +1V) RIN Common mode (VEE - 0.2V VCM VCC 1.5V) Guaranteed by CMRR test VEE - 0.2V VCM VCC - 1.5V VS = 2.25V to 5.5V RL = 100k, VEE + 0.25V VOUT VCC 0.25V RL = 1k, VEE + 0.5V VOUT VCC - 0.5V Output Voltage Swing Output Short-Circuit Current VOUT ISC RL = 100k, VCC - VOH and VOL - VEE RL = 1k, VCC - VOH and VOL - VEE Sourcing or sinking VEE 0.2V 65 65 85 65 90 80 110 90 10 200 15 150 450 mV mA SYMBOL VS IS VOS TCVOS MAX4494 and MAX4495 TA = +25C TA = TMIN to TMAX 3 1 0.2 5 250 110 VCC 1.5V 1 300 CONDITIONS Guaranteed by PSRR test MIN 2.25 770 0.3 TYP MAX 5.5 1100 5 10 UNITS V A mV V/C mV A nA k M V dB dB dB
VCM CMRR PSRR AVOL
Note 1: All devices are 100% production tested at TA = +25C. Limits over the operating temperature range are guaranteed by design and not production tested.
2
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SC70, Low-Power, General-Purpose, Dual-Supply, Rail-to-Rail Op Amps
AC ELECTRICAL CHARACTERISTICS
(VCC = +5V, VEE = -5V, RL = 100k to ground, CL = 15pF, TA = +25C, unless otherwise noted.)
PARAMETER Gain-Bandwidth Product Full-Power Bandwidth Slew Rate Phase Margin Gain Margin Total Harmonic Distortion Plus Noise Settling Time to 0.01% Input Capacitance Input Noise Voltage Density Input Noise Current Density All-Hostile Crosstalk Capacitive-Load Stability Power-Up Time tON THD+N tS CIN eIN iIN f = 1kHz f = 1kHz f = 1kHz, MAX4494 and MAX4495 AV = +1V/V, no sustained oscillations VOUT = 1V, 1s power supply rise-time f = 1kHz, VOUT = 5Vp-p, AV = +1V/V AV = +1V/V, VOUT = 5V step SYMBOL GBWP FPBW SR VOUT = 5Vp-p VOUT = 5Vp-p CONDITIONS MIN TYP 5 190 3 75 15 0.002 4 2 8 0.2 -100 300 3 MAX UNITS MHz kHz V/s degrees dB % s pF nV/Hz pA/Hz dB pF s
MAX4493/MAX4494/MAX4495
Typical Operating Characteristics
(VCC = +5V, VEE = -5V, VCM = 0, RL = 100k to ground, CL = 15pF, TA = +25C, unless otherwise noted.)
INPUT OFFSET VOLTAGE vs.TEMPERATURE
MAX4493-02 MAX4493-01
SUPPLY CURRENT vs. TEMPERATURE
900 875 850 SUPPLY CURRENT (A) 825 800 775 750 725 700 675 650 625 600 -50 VSUPPLY = 5V 800 700 INPUT OFFSET VOLTAGE (V) 600 500 400 300 200 100 0 -25 0 25 50 75 100 125 -50 -25
INPUT BIAS CURRENT vs.TEMPERATURE
275 INPUT BIAS CURRENT (nA) 250 225 200 175 150 125 100
MAX4493-03
300
VSUPPLY = 2.5V
0
TEMPERATURE (C)
75 50 TEMPERATURE (C)
25
100
125
-50
-25
0
25 75 50 TEMPERATURE (C)
100
125
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3
SC70, Low-Power, General-Purpose, Dual-Supply, Rail-to-Rail Op Amps MAX4493/MAX4494/MAX4495
Typical Operating Characteristics (continued)
(VCC = +5V, VEE = -5V, VCM = 0, RL = 100k to ground, CL = 15pF, TA = +25C, unless otherwise noted.)
INPUT BIAS CURRENT vs. COMMON-MODE VOLTAGE
MAX4493-04
COMMON-MODE REJECTION vs. FREQUENCY
MAX4493-05
POWER-SUPPLY REJECTION vs. FREQENCY (VSUPPLY = 2.5V to 5.5V)
MAX4493-06
400 350 INPUT BIAS CURRENT (nA) 300 250 200 150 100 50 0 -5.0 -2.5 0 2.5 VSUPPLY = 5V VSUPPLY = 2.5V
0 COMMON-MODE REJECTION (dB) -20 -40 -60 -80 -100 -120
-40 POWER SUPPLY REJECTION (dB) -50 -60 -70 -80 -90 -100
5.0
1
10
100
COMMON-MODE VOLTAGE (V)
10k FREQUENCY (Hz)
1k
100k
1M
100
1k
10k
100k
FREQUENCY (Hz)
INPUT VOLTAGE NOISE DENSITY vs. FREQUENCY
MAX4493-07
TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY
MAX4493-08
OUTPUT VOLTAGE SWING vs. TEMPERATURE (RL = 100k)
18 OUTPUT VOLTAGE SWING (mV) 16 14 12 10 8 6 4 2 0 VOL - VEE VCC - VOH
MAX4493-09
100
0.008 0.007 0.006
20
NOISE DENSITY (nV/Hz)
THD + N (%)
0.005 0.004 0.003 0.002 0.001
10
1 1 10 100 1k 10k 100k 1M FREQUENCY (Hz)
0 1 10 1k 100 FREQUENCY (Hz) 10k 100k
-50
-25
0
25
50
75
100
125
TEMPERATURE (C)
OUTPUT VOLTAGE SWING vs. TEMPERATURE (RL = 1k)
MAX4493-10
LARGE-SIGNAL GAIN vs. TEMPERATURE
MAX4493-11
GAIN AND PHASE vs. FREQUENCY
MAX4493-12
275 250 OUTPUT VOLTAGE SWING (mV) 225 200 175 150 125 100 75 50 25 0 -50 -25 0 25 50 75 100 VOL - VEE VCC - VOH
140 RL = 100k VEE + 0.25V VOUT VCC - 0.25V
LARGE-SIGNAL GAIN (dB)
120
60 50 40 30
GAIN (dB)
AV = +1000V/V
270 225 180 135
PHASE (degrees)
GAIN
100 RL = 1k VEE + 0.5V VOUT VCC - 0.5V
20 10 0 -10 -20 -30 -40 -50 -60 0.1k PHASE
90 45 0 -45 -90 -135 -180 -225 -270 100M
80
60
40 125 -50 -25 0 25 50 75 100 125 TEMPERATURE (C) TEMPERATURE (C)
1k
10k 100k 1M FREQUENCY (Hz)
10M
4
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SC70, Low-Power, General-Purpose, Dual-Supply, Rail-to-Rail Op Amps
Typical Operating Characteristics (continued)
(VCC = +5V, VEE = -5V, VCM = 0, RL = 100k to ground, CL = 15pF, TA = +25C, unless otherwise noted.)
MAX4493/MAX4494/MAX4495
GAIN AND PHASE vs. FREQUENCY (CL = 300pF)
60 50 40 30 20
GAIN (dB)
LARGE-SIGNAL GAIN vs. OUTPUT VOLTAGE SWING (RL TO VCC, VCC = +5V, VEE = -5V)
115 RL = 100k LARGE-SIGNAL GAIN (dB) 110 105 100 95 90 85 80 8.8 9.0 9.2 9.4 9.6 9.8 10.0 TOTAL OUTPUT VOLTAGE SWING (VP-P) RL = 1k RL = 10k
PHASE (degrees)
MAX4493-14
MAX4493-13
AV = +1000V/V
270 225 180 135
120
GAIN
90 45 0 -45 -90 -135 -180 -225 -270 100M
10 0 -10 -20 -30 -40 -50 -60 0.1k
PHASE
1k
10k
100k
1M
10M
FREQUENCY (Hz)
LARGE-SIGNAL GAIN vs. OUTPUT VOLTAGE SWING (RL TO VEE, VCC = +5V, VEE = -5V)
MAX4493-15
LARGE-SIGNAL GAIN vs. OUTPUT VOLTAGE SWING (RL TO VCC, VCC = +2.25V, VEE = -2.25V)
115 110 LARGE-SIGNAL GAIN (dB) 105 100 95 90 85 80 75 70 RL = 1k RL = 10k RL = 100k
MAX4493-16
LARGE-SIGNAL GAIN vs. OUTPUT VOLTAGE SWING (RL TO VEE, VCC = +2.25V, VEE = -2.25V)
110 LARGE-SIGNAL GAIN (dB) 105 100 95 90 85 80 75 70 RL = 1k RL = 10k RL = 100k
MAX4493-17
120 115 LARGE-SIGNAL GAIN (dB) 110 105 100 95 90 85 80 8.8 9.0 9.2 9.4 9.6 9.8 RL = 1k RL = 10k RL = 100k
120
115
10.0
3.4
TOTAL OUTPUT VOLTAGE SWING (VP-P)
3.6 3.8 4.0 4.2 TOTAL OUTPUT VOLTAGE SWING (VP-P)
4.4
3.4
3.6 3.8 4.0 4.2 TOTAL OUTPUT VOLTAGE SWING (VP-P)
4.4
MAX4494/MAX4495 CROSSTALK vs. FREQUENCY
MAX4493-18
LARGE-SIGNAL TRANSIENT RESPONSE
MAX4493-19
0 -20 CROSSTALK (dB) -40 -60 -80 -100 -120 10k 100k 1M
INPUT VOLTAGE (2V/div)
OUTPUT VOLTAGE (2V/div)
10M
10s/div
FREQUENCY (Hz)
_______________________________________________________________________________________
5
SC70, Low-Power, General-Purpose, Dual-Supply, Rail-to-Rail Op Amps MAX4493/MAX4494/MAX4495
Typical Operating Characteristics (continued)
(VCC = +5V, VEE = -5V, VCM = 0, RL = 100k to ground, CL =15pF, TA = +25C, unless otherwise noted.)
LARGE-SIGNAL CAPACITIVE-LOAD STABILITY (CL = 1200pF)
MAX4493-21 MAX4493-20
SMALL-SIGNAL TRANSIENT RESPONSE
INPUT VOLTAGE (50mV/div)
SMALL-SIGNAL CAPACITIVE-LOAD STABILITY (CL = 300pF)
INPUT VOLTAGE (50mV/div)
MAX4493-22
OUTPUT VOLTAGE (50mV/div)
OUTPUT VOLTAGE (2V/div)
INPUT VOLTAGE (2V/div)
200ns/div
10s/div
OUTPUT VOLTAGE (50mV/div)
200ns/div
SMALL-SIGNAL TRANSIENT RESPONSE (RISO = 15, CL = 1000pF)
MAX4493-23
LARGE-SIGNAL TRANSIENT RESPONSE (RISO = 15, CL = 0.01F)
INPUT VOLTAGE (2V/div)
MAX4493-24
INPUT VOLTAGE (50mV/div)
OUTPUT VOLTAGE (50mV/div)
200ns/div
OUTPUT VOLTAGE (2V/div)
10s/div
POWER-UP TIME (VIN = +1V)
10 VCC - VEE (4V/div) 0
MAX4493-25
STABILITY vs. CAPACITIVE AND RESISTIVE LOADS
900 800 700 CLOAD (pF) 600 500 400 300 200 STABLE REGION
MAX4493-26
1000
1V OUTPUT VOLTAGE (500mV/div)
0 10s/div
100 0 1k 10k RLOAD () 100k
6
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SC70, Low-Power, General-Purpose, Dual-Supply, Rail-to-Rail Op Amps
Pin Description
PIN NAME MAX4493 -- -- -- -- -- -- -- -- -- -- -- -- 4 1 3 5 2 MAX4494 1 2 3 7 6 5 -- -- -- -- -- -- -- -- -- 8 4 MAX4495 1 2 3 7 6 5 8 9 10 14 13 12 ---- -- 4 11 OUTA INAINA+ OUTB INBINB+ OUTC INCINC+ OUTD INDIND+ OUT IN+ INVCC VEE Channel A Output Channel A Inverting Input Channel A Noninverting Input Channel B Output Channel B Inverting Input Channel B Noninverting Input Channel C Output Channel C Inverting Input Channel C Noninverting Input Channel D Output Channel D Inverting Input Channel D Noninverting Input Output Noninverting Input Inverting Input Positive Supply Negative Supply FUNCTION
MAX4493/MAX4494/MAX4495
Applications Information
Rail-to-Rail Output Stage
The MAX4493/MAX4494/MAX4495 output stage can drive up to 1k and still swing within 200mV of the rails.
Capacitive-Load Stability
Driving large capacitive loads can cause instability in many op amps. The MAX4493/MAX4494/MAX4495 are stable with capacitive loads up to 300pF. The
Capacitive-Load Stability graph in the Typical Operating Characteristics gives the stable operation region for capacitive versus resistive load. Stability with higher capacitive loads can be improved by adding an isolation resistor in series with the op-amp output, as shown in Figure 1. This resistor improves the circuit's phase margin by isolating the load capacitor from the amplifier's output. As seen in the Typical Operating Characteristics, driving capacitive loads with an isolation resistor exhibits some overshoot, but no oscillation.
Full-Power Bandwidth
The FPBW is given by:
RISO OUTPUT MAX4493 INPUT CL
FPBW(Hz) =
VOUTp-p(max)
[
SR
]
Figure 1. Capacitive Load Driving Circuit _______________________________________________________________________________________ 7
SC70, Low-Power, General-Purpose, Dual-Supply, Rail-to-Rail Op Amps MAX4493/MAX4494/MAX4495
where the slew rate (SR) is 3V/s. Figure 2 shows the full-power bandwidth as a function of the peak-to-peak AC output voltage.
BANDWIDTH vs. OUTPUT VOLTAGE SWING
100M
Power-Up Conditions
BANDWIDTH (Hz)
The MAX4493/MAX4494/MAX4495 typically settle within 3s after power-up. See Power-Up Time in Typical Operating Characteristics.
10M
AV = +1V/V
Power Supplies and Layout
The MAX4493/MAX4494/MAX4495 operate with dual supplies from 2.25V to 5.5V. Bypass both VCC and VEE with their own 0.1F capacitor to ground. Good layout technique helps 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.
1M
100k 0 1 2 3 4 5 VOUT (Vp-p)
Figure 2. Bandwidth vs. Peak-to-Peak AC Voltage Plot
Pin Configurations (continued)
TOP VIEW TOP VIEW
OUTA 1 INAOUTA 1 INA- 2 8 7 VCC OUTB INBINB+ INA+ 2 3 14 OUTD 13 IND12 IND+
MAX4494
INA+ 3 6 5 VEE 4
VCC 4 INB+ 5 INB- 6 OUTB 7
MAX4495
11 VEE 10 INC+ 9 8 INCOUTC
SO/SOT23/MAX SO/TSSOP
Typical Operating Circuit
Rg +5V +5V Rf
Chip Information
MAX4493 TRANSISTOR COUNT: 81 MAX4494 TRANSISTOR COUNT: 159 MAX4495 TRANSISTOR COUNT: 318 PROCESS: Bipolar
0.1F
0.1F
RISO REF DAC MAX4493
VOUT
0.1F 0.1F -5V -5V
8
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SC70, Low-Power, General-Purpose, Dual-Supply, Rail-to-Rail Op Amps
Package Information
TSSOP,NO PADS.EPS
MAX4493/MAX4494/MAX4495
_______________________________________________________________________________________
SOT5L.EPS
9
SC70, Low-Power, General-Purpose, Dual-Supply, Rail-to-Rail Op Amps MAX4493/MAX4494/MAX4495
Package Information (continued)
SC70, 5L.EPS
10
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SOICN.EPS
SC70, Low-Power, General-Purpose, Dual-Supply, Rail-to-Rail Op Amps
Package Information (continued)
SOT23, 8L.EPS
MAX4493/MAX4494/MAX4495
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 ____________________ 11 (c) 2001 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.
8LUMAXD.EPS

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