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Part: MAX478E
Category:
Analog & Mixed-Signal Processing
-> Amplifiers
-> Operational Amplifiers
Description: 17 a Max, Dual Quad, Single-Supply, Precision op Amps
Company: Maxim Integrated Products
Datasheet: Download MAX478E datasheet File size : 261 kB
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Datasheet text preview:
19-0127; Rev. 1; 11/98
17µA Max, Dual/Quad, Single-Supply, Precision Op Amps
_______________General Description
The MAX478 and MAX479 are dual and quad micropower, precision op amps available in 8-pin and 14-pin DIP and small-outline packages, respectively. Both devices feature an extremely low, 17µA max supply current per op amp, 70µV max offset voltage, 2.2µV/°C max offset voltage drift (0.5µV/°C typ), and 250pA max input offset current. The MAX478 and MAX479 operate from a single supply. The input voltage range includes ground, and the output swings to within a few millivolts of ground, which eliminates pull-down resistors and saves power. Both devices are optimized for single 3V and 5V supply operation, with guaranteed specifications at each supply voltage. Specifications for ±15V operation are also provided.
___________________________Features
o 17µA Max Supply Current (MAX478A/MAX479A) o 70µV Max Offset Voltage (MAX478A) o Single-Supply Operation: Input Voltage Range Includes Ground Output Swings to Ground While Sinking Current No Pull-Down Resistors Required o Dual Op Amp in 8-Pin DIP/SO Package (MAX478) Quad Op Amp in 14-Pin DIP/SO Package (MAX479) o 250pA Max Input Offset Current (MAX478A/MAX479A) o 0.5µV/°C Offset-Voltage Drift o Output Sources and Sinks 5mA Load Current
MAX478/MAX479
______________Ordering Information
PART MAX478ACPA MAX478CPA MAX478CSA MAX478C/D MAX478EPA MAX478ESA MAX479ACPD MAX479CPD MAX479CSD MAX479EPD MAX479ESD TEMP. RANGE 0°C to +70°C 0°C to +70°C 0°C to +70°C 0°C to +70°C -40°C to +85°C -40°C to +85°C 0°C to +70°C 0°C to +70°C 0°C to +70°C -40°C to +85°C -40°C to +85°C PIN-PACKAGE 8 Plastic DIP 8 Plastic DIP 8 SO Dice* 8 Plastic DIP 8 SO 14 Plastic DIP 14 Plastic DIP 14 SO 14 Plastic DIP 14 SO
_______________________Applications
Battery- or Solar-Powered Systems: Portable Instrumentation Remote Sensor Amplifier Satellite Circuitry Micropower Sample-and-Hold Thermocouple Amplifier Micropower Filters Single Lithium Cell Powered Systems
* Dice are specified at TA = +25°C, DC parameters only.
_________________Pin Configurations
T O P VIEW
OUTA INA1 2 A B 8 7 6 5 V+ OUTB INBINB+
__________Typical Operating Circuit
R3 R1 R2 R2 R1
INA+ 3 V- 4
MAX478
DIP/SO
+5V
1/2MAX478
OUTA INA-
1 2 A D
14 OUTD 13 IND12 IND+
VOUT V2 V1
INA+ 3 V+ 4
MAX479
B C
11 V10 INC+ 9 8 INCOUTC
1/2MAX478
VOUT = (V1-V2) (1 + R1 R1 +2 ) R2 R3
INB+
5
INB- 6 OUTB 7
MICROPOWER, HIGH INPUT IMPEDANCE DIFFERENTIAL AMPLIFIER WITH VARIABLE GAIN IN 8-PIN DIP/SO
DIP/SO
________________________________________________________________ Maxim Integrated Products
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For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800. For small orders, phone 1-800-835-8769.
17µA Max, Dual/Quad, Single-Supply, Precision Op Amps MAX478/MAX479
ABSOLUTE MAXIMUM RATINGS
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±22V Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±30V Input Voltage . . . . . . . . . . . . . . . . . . . Equal to Positive Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5V Below Negative Supply Voltage Output Short-Circuit Duration. . . . . . . . . . . . . . . . . . . . . . . . . Continuous Continuous Power Dissipation (TA = +70°C): 8-Pin Plastic DIP (derate 9.09mW/°C above +70°C) . . . . . 727mW 14-Pin Plastic DIP (derate 10.00mW/°C above +70°C) . . 800mW 14-Pin Wide SO (derate 9.52mW/°C above +70°C) . . . 762mW Operating Temperature Ranges: MAX47_ACP_/C_ _ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to +70°C MAX47_E_ _ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40°C to +85°C Storage Temperature Range . . . . . . . . . . . . . . . . . . . -65°C to +150°C Lead Temperature (soldering, 10sec). . . . . . . . . . . . . . . . . . . . +300°C
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: 5V
(VS = 5V, 0V, VCM = 0.1V, VO = 1.4V, TA = +25°C, unless otherwise noted.) PARAMETER SYMBOL CONDITIONS MAX478ACP/CP/EP Input Offset Voltage VOS MAX479ACP/CP/EP MAX478CS/ES MAX479CS/ES Long-Term Input OffsetVoltage Stability Input Offset Current Input Bias Current Input Noise Voltage Input Noise Voltage Density Input Noise Current Input Noise Current Density Input Resistance Input Voltage Range Common-Mode Rejection Ratio Power-Supply Rejection Ratio Large-Signal Voltage Gain RIN VIN (CM) CMRR PSRR in VOS Time IOS IB en 0.1Hz to 10Hz (Note 1) fo = 10Hz (Note 1) fo = 1000Hz (Note 1) 0.1Hz to 10Hz (Note 1) fo = 10Hz (Note 1) fo = 1000Hz Differential mode (Note 1) Common mode Upper limit Lower limit VCM = 0V to 3.5V VS = 2.2V to 12V VO = 0.03V to 4V, no load (Note 1) VO = 0.03V to 3.5V, RL = 50k 3.5 0 93 94 140 80 0.5 0.05 3 0.9 50 49 1.5 0.03 0.01 0.8 2.0 12 3.9 -0.3 103 104 700 200 3.5 0 90 92 110 70 0.6 0.25 5 2.0 75 65 2.5 0.07 MAX478AC MAX479AC MIN TYP MAX 30 35 70 100 MAX478C/E MAX479C/E MIN TYP MAX 40 40 80 90 0.6 0.05 3 0.9 50 49 1.5 0.03 0.01 2.0 12 3.9 -0.3 102 104 700 V/mV 200 0.35 6 120 150 180 250 µV/Mo. nA nA µVp-p nV/Hz pAp-p pA/Hz G V dB dB µV UNITS
AVOL
2
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17µA Max, Dual/Quad, Single-Supply, Precision Op Amps
ELECTRICAL CHARACTERISTICS: 5V (continued)
(VS = 5V, 0V, VCM = 0.1V, VO = 1.4V, TA = +25°C, unless otherwise noted.) PARAMETER SYMBOL CONDITIONS Output low, no load Output low, 2k to GND Output Voltage Swing VOUT Output low, ISINK = 100µA Output high, no load Output high, 2k to GND Slew Rate Gain-Bandwidth Product Supply Current per Amplifier Channel Separation Minimum Supply Voltage VS SR GBW IS AV = +1, CL = 1pF (Note 1) fO 5kHz 4.2 3.5 MAX478AC MAX479AC MIN TYP MAX 6.5 0.2 120 4.4 3.8 9.0 0.6 160 4.2 3.5 MAX478C/E MAX479C/E MIN TYP MAX 6.5 0.2 120 4.4 3.8 V V/µs kHz 21 µA 12 130 2.0 2.2 17 13 130 2.0 2.2 20 dB V 9.0 0.6 160 mV UNITS
MAX478/MAX479
0.013 0.025 60 13 18
0.013 0.025 60 14
VS = ±1.5V, VO = 0V VIN = 3V, RL = 10k (Note 2)
ELECTRICAL CHARACTERISTICS: 5V
(VS = 5V, 0V, VCM = 0.1V, VO = 1.4V, TA = 0°C to +70°C, unless otherwise noted.) PARAMETER SYMBOL CONDITIONS MAX478ACP/CP Input Offset Voltage VOS MAX479ACP/CP MAX478CS MAX479CS Input Offset Voltage Drift Input Offset Current Input Bias Current Common-Mode Rejection Ratio Power-Supply Rejection Ratio Large-Signal Voltage Gain VOS T IOS IB CMRR PSRR AVOL VCM = 0V to 3.4V VS = 2.5V to 12V VO = 0.05V to 4V, no load (Note 1) VO = 0.05V to 3.5V, RL = 50k Output low, no load Output Voltage Swing VOUT Output low, ISINK = 100µA Output high, no load Output high, 2k to GND Supply Current per Amplifier IS 4.1 3.3 90 90 105 55 MAX47_ACP/CP (Note 1) MAX47_CS (Note 1) 0.06 3 101 102 500 160 8 140 4.3 3.8 14 21 11 190 4.1 3.3 0.35 6 86 88 80 45 0.5 2.2 MAX478AC MAX479AC MIN TYP MAX 50 60 170 200 MAX478C MAX479C MIN TYP MAX 65 70 120 130 0.6 0.8 0.06 3 100 102 500 V/mV 160 8 140 4.3 3.8 15 24 11 190 mV 250 290 300 400 3.0 µV/°C 4.5 0.50 7 nA nA dB dB µV UNITS
V µA
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