50 MHz, Precision, Low Distortion,

Low Noise CMOS Amplifiers

AD8651/AD8652

Rev. B

Information furnished by Analog Devices is believed to be accurate and reliable.

However, no responsibility is assumed by Analog Devices for its use, nor for any

infringements of patents or other rights of third parties that may result from its use.

Specifications subject to change without notice. No license is granted by implication

or otherwise under any patent or patent rights of Analog Devices. Trademarks and

registered trademarks are the property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

www.analog.com

Fax: 781.326.8703

© 2004 Analog Devices, Inc. All rights reserved.

FEATURES

Bandwidth: 50 MHz @ 5 V

Low Noise: 4.5 nV/√Hz

Offset voltage: 100 µV typ, specified over

entire common-mode range

41 V/µs slew rate

Rail-to-rail input and output swing

Input bias current: 1 pA

Single-supply operation: 2.7 V to 5.5 V

Space-saving MSOP and SOIC packaging

APPLICATIONS

Optical communications

Laser source drivers/controllers

Broadband communications

High speed ADC and DAC

Microwave link interface

Cell phone PA control

Video line driver

Audio

PIN CONFIGURATIONS

NC

1

–IN

2

+IN

3

V–

4

NC

8

V+

7

OUT

6

NC

5

NC = NO CONNECT

AD8651

TOP VIEW

(Not to Scale)

Figure 1. 8-Lead MSOP (RM-8)

OUT A

1

–IN A

2

+IN A

3

V–

4

V+

8

OUT B

7

–IN B

6

+IN B

5

AD8652

TOP VIEW

(Not to Scale)

Figure 2. 8-Lead MSOP (RM-8)

NC

1

–IN

2

+IN

3

V–

4

NC

8

V+

7

OUT

6

NC

5

NC = NO CONNECT

AD8651

TOP VIEW

(Not to Scale)

Figure 3. 8-Lead SOIC (R-8)

OUT A

1

–IN A

2

+IN A

3

V–

4

V+

8

OUT B

7

–IN B

6

+IN B

5

AD8652

TOP VIEW

(Not to Scale)

Figure 4. 8-Lead SOIC (R-8)

GENERAL DESCRIPTION

The AD8651 is a high precision, low noise, low distortion, rail-

to-rail CMOS operational amplifier that runs from a single-

supply voltage of 2.7 V to 5 V.

The AD8651 is a rail-to-rail input and output amplifier with a

gain bandwidth of 50 MHz and a typical voltage offset of

100 µV across common mode from a 5 V supply. It also features

low noise—4.5 nV/√Hz.

The AD8651 can be used in communications applications, such

as cell phone transmission power control, fiber optic

networking, wireless networking, and video line drivers.

The AD8651 features the newest generation of DigiTrim®

in-package trimming. This new generation measures and

corrects the offset over the entire input common-mode range,

other rail-to-rail amplifiers. Offset voltage and CMRR are both

specified and guaranteed over the entire common-mode range

as well as over the extended industrial temperature range.

The AD8651 is offered in the 8-lead SOIC package and the

8-lead MSOP package. It is specified over the extended indus-

trial temperature range (−40°C to +125°C).