MAX479 Maxim, MAX479 Datasheet
MAX479
Manufacturer Part Number
MAX479
Description
17A Max / Dual/Quad / Single-Supply / Precision Op Amps
Manufacturer
Maxim
Datasheet
1.MAX479.pdf
(12 pages)
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19-0127; Rev. 1; 11/98
The MAX478 and MAX479 are dual and quad micro-
power, 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 sup-
ply. 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 sup-
ply operation, with guaranteed specifications at each
supply voltage. Specifications for ±15V operation are
also provided.
__________Typical Operating Circuit
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.
V2
_______________General Description
V1
_______________________Applications
MICROPOWER, HIGH INPUT IMPEDANCE DIFFERENTIAL
R1
Battery- or Solar-Powered Systems:
Micropower Sample-and-Hold
Thermocouple Amplifier
Micropower Filters
Single Lithium Cell Powered Systems
AMPLIFIER WITH VARIABLE GAIN IN 8-PIN DIP/SO
Portable Instrumentation
Remote Sensor Amplifier
Satellite Circuitry
1/2MAX478
________________________________________________________________ Maxim Integrated Products
R3
R2
17µA Max, Dual/Quad, Single-Supply,
R2
V
OUT
= (V1-V2) (1 +
+5V
R1
1/2MAX478
R1
R2
+ 2
V
OUT
R1 )
R3
* Dice are specified at T
_________________Pin Configurations
MAX478ACPA
MAX478CPA
MAX478CSA
MAX478C/D
MAX478EPA
MAX478ESA
MAX479ACPD
MAX479CPD
MAX479CSD
MAX479EPD
MAX479ESD
______________Ordering Information
___________________________Features
17µA Max Supply Current (MAX478A/MAX479A)
70µV Max Offset Voltage (MAX478A)
Single-Supply Operation:
Dual Op Amp in 8-Pin DIP/SO Package (MAX478)
Quad Op Amp in 14-Pin DIP/SO Package (MAX479)
250pA Max Input Offset Current
(MAX478A/MAX479A)
0.5µV/°C Offset-Voltage Drift
Output Sources and Sinks 5mA Load Current
TOP VIEW
Input Voltage Range Includes Ground
Output Swings to Ground While Sinking Current
No Pull-Down Resistors Required
PART
Precision Op Amps
OUTA
OUTA
OUTB
INA+
INA+
INB+
INA-
INA-
INB-
V+
V-
1
2
3
4
1
2
3
4
5
6
7
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
TEMP. RANGE
A
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
= +25°C, DC parameters only.
MAX478
A
B
A
DIP/SO
DIP/SO
MAX479
B
D
C
14
13
12
11
10
8
7
6
5
9
8
V+
OUTB
INB-
OUTD
IND-
IND+
INB+
V-
INC+
INC-
OUTC
14 Plastic DIP
14 Plastic DIP
14 SO
14 Plastic DIP
14 SO
PIN-PACKAGE
8 Plastic DIP
8 Plastic DIP
8 SO
Dice*
8 Plastic DIP
8 SO
1
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