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MAX4194ESA
(Rev.:1999)

Micropower, Single-Supply, Rail-to-Rail, Precision Instrumentation Amplifiers

Maxim Integrated 

19-1468; Rev 0; 4/99

Micropower, Single-Supply, Rail-to-Rail,

Precision Instrumentation Amplifiers

General Description

The MAX4194 is a variable-gain precision instrumenta-

tion amplifier that combines Rail-to-Rail® single-supply

operation, outstanding precision specifications, and a

high gain bandwidth. This amplifier is also offered in

three fixed-gain versions: the MAX4195 (G = +1V/V),

the MAX4196 (G = +10V/V), and the MAX4197 (G =

+100V/V). The fixed-gain instrumentation amplifiers fea-

ture a shutdown function that reduces the quiescent

current to 8µA. A traditional three operational amplifier

configuration is used to achieve maximum DC preci-

sion.

The MAX4194–MAX4197 have rail-to-rail outputs and

inputs that can swing to within 200mV of the negative rail

and to within 1.1V of the positive rail. All parts draw only

93µA and operate from a single +2.7V to +7.5V supply

or from dual ±1.35V to ±3.75V supplies. These amplifiers

are offered in 8-pin SO packages and are specified for

the extended temperature range (-40°C to +85°C).

See the MAX4198/MAX4199 data sheet for single-sup-

ply, precision differential amplifiers.

Applications

Medical Equipment

Thermocouple Amplifier

4–20mA Loop Transmitters

Data-Acquisition Systems

Battery-Powered/Portable Equipment

Transducer Interface

Bridge Amplifier

Features

o +2.7V Single-Supply Operation

o Low Power Consumption

93µA Supply Current

8µA Shutdown Current (MAX4195/96/97)

o High Common-Mode Rejection: 115dB (G = +10V/V)

o Low 50µV Input Offset Voltage (G ≥ +100V/V)

o Low ±0.01% Gain Error (G = +1V/V)

o 250kHz -3dB Bandwidth (G = +1V/V, MAX4194)

o Rail-to-Rail Outputs

PART

MAX4194ESA

MAX4195ESA

MAX4196ESA

MAX4197ESA

Ordering Information

TEMP. RANGE

-40°C to +85°C

-40°C to +85°C

-40°C to +85°C

-40°C to +85°C

PIN-PACKAGE

8 SO

8 SO

8 SO

8 SO

Selector Guide

PART

MAX4194

MAX4195

MAX4196

MAX4197

SHUTDOWN

No

Yes

Yes

Yes

GAIN (V/V)

Variable

+1

+10

+100

CMRR (dB)

95 (G = +1V/V)

95

115

115

Pin Configurations

TOP VIEW

RG- 1

IN- 2

IN+ 3

VEE 4

MAX4194

8 RG+

7 VCC

6 OUT

5 REF

SO

REF 1

IN- 2

IN+ 3

VEE 4

MAX4195

MAX4196

MAX4197

8 SHDN

7 VCC

6 OUT

5 FB

SO

Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.

________________________________________________________________ Maxim Integrated Products 1

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.

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