March 1999

1

MIC7122

MIC7122

Micrel

MIC7122

Micrel

MIC7122

Rail-to-Rail Dual Op Amp

Preliminary Information

General Description

The MIC7122 is a dual high-performance CMOS operational

amplifier featuring rail-to-rail inputs and outputs.

The input common-mode range extends beyond the rails by

300mV, and the output voltage swings to within 150

µV of both

rails when driving a 100k

Ω load.

The amplifiers operate from 2.2V to 15V and are fully speci-

fied at 2.2V, 5V, and 15V. Gain bandwidth and slew rate are

750kHz and 0.7V/

µs, respectively at 2.2V supply.

The MIC7122 is available in the MM8™ 8-lead MSOP pack-

age.

Features

• Small footprint MSOP-8 package

• 350

µA supply current per op amp at 2.2V supply

• Guaranteed 2.2V, 5V, and 15V performance

• 750kHz gain-bandwidth product at 2.2V supply

• 0.01% total harmonic distortion at 1kHz (15V, 2k

Ω)

• Drives 200pF at 5V and greater supply voltages

Applications

• Battery-powered instrumentation

• PCMCIA, USB peripherals

• Portable computers and PDAs

Ordering Information

Part Number

Temperature Range

Package

MIC7122BMM

–40

°C to +85°C

MSOP-8

Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com

MM8 is a trademark of Micrel, Inc.

Pin Description

Pin Number

Pin Name

Pin Function

1 / 7

OUTA / OUTB

Amplifier Outputs

2 / 6

INA– / INB–

Inverting Inputs

3 / 5

INA+ / INB+

Noninverting Inputs

4

V–

Negative Supply: Negative supply for split supply application or ground for

single supply applications.

8

V+

Positive Supply

Pin Configuration

1

2

3

4

8

7

6

5

V+

OUT B

INB–

INB+

OUT A

IN A–

IN A+

V–

MSOP-8 (MM)

1

2

3

4

8

7

6

5

A

B