Micropower, Single-Supply, Rail-to-Rail

Precision Differential Amplifiers

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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 408-737-7600 ext. 3468.

General Description

ential amplifiers are ideal for single-supply applications

that benefit from a low 0.01% gain error. The MAX4198

is factory trimmed to a fixed gain of +1V/V, and the

MAX4199 is trimmed to a fixed gain of +10V/V. Capable

of operating from a single +2.7V to +7.5V supply or

from dual ±1.35V to ±3.75V supplies, they consume

only 42µA while achieving -3dB bandwidths of 175kHz

(MAX4198) and 45kHz (MAX4199). These amplifiers

feature a shutdown mode that reduces the supply cur-

rent to 6.5µA.

The MAX4198/MAX4199 can drive 5k

Ω loads to within

100mV from each rail. The standard differential amplifi-

er configurations provide common-mode rejection of

90dB for the MAX4198 and 110dB for the MAX4199.

The input common-mode voltage range for the

MAX4198 extends 100mV Beyond-the-Rails™.

The MAX4198/MAX4199 are offered in a space-saving

8-pin µMAX package. For complete micropower, rail-to-

rail instrumentation amplifiers, see the MAX4194–

MAX4197 data sheet.

Applications

Instrumentation Amplifier Building Block

Differential Voltage Amplifiers

Data-Acquisition Systems

Portable/Battery-Powered Equipment

Transducer Interface

Current-Sense Amplifiers

Features

o Low 0.01% Gain Error

o High Common-Mode Rejection: 110dB (MAX4199)

o 10µV Input Offset Voltage (MAX4199)

30µV Input Offset Voltage (MAX4198)

o +2.7V to +7.5V Single-Supply Operation

o 42µA Supply Current

o 175kHz (MAX4198) and 45kHz (MAX4199)

-3dB Bandwidth

o 6.5µA Shutdown Current

o Rail-to-Rail Outputs Drive 5k

Ω Loads

o Input Voltage Range Extends 100mV Beyond-the-

Rails (MAX4198)

o Available in Space-Saving 8-Pin µMAX Package

OUT

FB

1

2

8

7

SHDN

IN-

IN+

REF

µMAX/SO

TOP VIEW

3

4

6

5

MAX4198

MAX4199

19-1445; Rev 0; 4/99

PART

MAX4198EUA

MAX4198ESA

-40°C to +85°C

-40°C to +85°C

TEMP. RANGE

PIN-

PACKAGE

8 µMAX

8 SO

Pin Configuration

Ordering Information

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

Beyond-the-Rails is a trademark of Maxim Integrated Products.

GAIN

(V/V)

1

1

MAX4199EUA

MAX4199ESA

10

-40°C to +85°C

-40°C to +85°C

8 µMAX

8 SO

10

MAX4198

MAX4199

25k (250k)

25k

25k (250k)

25k

7

( ) ARE FOR MAX4199 ONLY.

5 FB

IN-

IN+

2

3

OUT

REF

6

1

4

Functional Diagram