Rainbow-electronics MAX479 User Manual download pdf

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.

MAX478/MAX479

17µA Max, Dual/Quad, Single-Supply,

Precision Op Amps

________________________________________________________________ Maxim Integrated Products

V+

OUTB

INB-

INB+

V-

INA+

INA-

OUTA

MAX478

DIP/SO

TOP VIEW

OUTD

IND-

IND+

V-

V+

INA+

INA-

OUTA

MAX479

DIP/SO

INC+

INC-

OUTC

OUTB

INB-

INB+

_________________Pin Configurations

R2 R2

+5V

OUT

MICROPOWER, HIGH INPUT IMPEDANCE DIFFERENTIAL

AMPLIFIER WITH VARIABLE GAIN IN 8-PIN DIP/SO

1/2MAX478

OUT

= (V1-V2) (1 +

+ 2

)

R2 R3

__________Typical Operating Circuit

19-0127; Rev. 1; 11/98

_______________General Description

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.

_______________________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

___________________________Features

♦ 17µA Max Supply Current (MAX478A/MAX479A)

♦ 70µV Max Offset Voltage (MAX478A)

♦ Single-Supply Operation:

Input Voltage Range Includes Ground

Output Swings to Ground While Sinking Current

No Pull-Down Resistors Required

♦ 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

______________Ordering Information

PART TEMP. RANGE PIN-PACKAGE

MAX478ACPA

0°C to+70°C 8 Plastic DIP

MAX478CPA 0°C to+70°C 8 Plastic DIP

MAX478CSA 0°C to+70°C 8 SO

MAX478C/D 0°C to+70°C Dice*

MAX478EPA -40°C to+85°C 8 Plastic DIP

MAX478ESA -40°C to+85°C 8 SO

MAX479ACPD

0°C to+70°C 14 Plastic DIP

MAX479CPD 0°C to+70°C 14 Plastic DIP

MAX479CSD 0°C to+70°C 14 SO

MAX479EPD -40°C to+85°C 14 Plastic DIP

MAX479ESD -40°C to+85°C 14 SO

* Dice are specified at T

= +25°C, DC parameters only.

1 2 3 4 5 6 ... 11 12

Summary of Contents

Page 1 - Precision Op Amps

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.MAX478/MAX47917µ

Page 2

MAX478/MAX47917µA Max, Dual/Quad, Single-Supply,Precision Op Amps10___________________________________________________________________________________

Page 3

________________________________________________________Package InformationMAX478/MAX47917µA Max, Dual/Quad, Single-Supply,Precision Op Amps__________

Page 4

MAX478/MAX47917µA Max, Dual/Quad, Single-Supply,Precision Op AmpsMaxim cannot assume responsibility for use of any circuitry other than circuitry enti

Page 5

MAX478/MAX47917µA Max, Dual/Quad, Single-Supply,Precision Op Amps2 ___________________________________________________________________________________

Page 6

MAX478/MAX47917µA Max, Dual/Quad, Single-Supply,Precision Op Amps_____________________________________________________________________________________

Page 7

MAX478/MAX47917µA Max, Dual/Quad, Single-Supply,Precision Op Amps4 ___________________________________________________________________________________

Page 8

MAX478/MAX47917µA Max, Dual/Quad, Single-Supply,Precision Op Amps_____________________________________________________________________________________

Page 9 - GAIN, PHASE

MAX478/MAX47917µA Max, Dual/Quad, Single-Supply,Precision Op Amps6 ___________________________________________________________________________________

Page 10 - INPUT BIAS AND OFFSET CURRENT

MAX478/MAX47917µA Max, Dual/Quad, Single-Supply,Precision Op Amps_____________________________________________________________________________________

Page 11 - SOICN.EPS

MAX478/MAX47917µA Max, Dual/Quad, Single-Supply,Precision Op Amps8 ___________________________________________________________________________________

Page 12 - PDIPN.EPS

MAX478/MAX47917µA Max, Dual/Quad, Single-Supply,Precision Op Amps_____________________________________________________________________________________

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Rainbow-electronics MAX479 User Manual

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Summary of Contents

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