50 MHz, Precision, Low Distortion,
Low Noise CMOS Amplifiers
AD8651/AD8652
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
NC
1
–IN
2
+IN
3
V–
4
PIN CONFIGURATIONS
8
NC
V+
OUT
NC
03301-0-001
OUT A
1
–IN A
2
+IN A
3
V–
4
8
V+
OUT B
–IN B
+IN B
03301-B-003
03301-B-004
AD8651
TOP VIEW
(Not to Scale)
7
6
5
AD8652
TOP VIEW
(Not to Scale)
7
6
5
NC = NO CONNECT
Figure 1. 8-Lead MSOP (RM-8)
Figure 2. 8-Lead MSOP (RM-8)
NC
1
8
NC
V+
03301-0-002
OUT A
1
–IN A
2
+IN A
3
8
V+
OUT B
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
–IN
2
+IN
3
AD8651
7
AD8652
7
6
OUT
TOP VIEW
V–
4
(Not to Scale)
5
NC
6
–IN B
TOP VIEW
V–
4
(Not to Scale)
5
+IN B
NC = NO CONNECT
Figure 3. 8-Lead SOIC (R-8)
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,
providing less distortion from V
OS
variation than is typical of
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).
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
Fax: 781.326.8703
© 2004 Analog Devices, Inc. All rights reserved.
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