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AD8656ARMZ 数据手册 - Maxim Integrated（美信）
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Low Noise,
Precision CMOS Amplifier
Data Sheet
AD8655/AD8656
Rev. E Document Feedback
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 ©2005–2013 Analog Devices, Inc. All rights reserved.
Technical Support www.analog.com
FEATURES
Low noise: 2.7 nV/√Hz at f = 10 kHz
Low offset voltage: 250 µV max over V
CM
Offset voltage drift: 0.4 µV/°C typ and 2.3 µV/°C max
Bandwidth: 28 MHz
Rail-to-rail input/output
Unity gain stable
2.7 V to 5.5 V operation
−40°C to +125°C operation
Qualified for automotive applications
APPLICATIONS
ADC and DAC buffers
Audio
Industrial controls
Precision filters
Digital scales
Automotive collision avoidance
PLL filters
PIN CONFIGURATIONS
Figure 1. AD8655
8-Lead MSOP (RM-8)
8-Lead SOIC (R-8)
Figure 2. AD8656
8-Lead MSOP (RM-8)
8-Lead SOIC (R-8)
GENERAL DESCRIPTION
The AD8655/AD8656 are the industry’s lowest noise, precision
CMOS amplifiers. They leverage the Analog Devices DigiTrim®
technology to achieve high dc accuracy.
The AD8655/AD8656 provide low noise (2.7 nV/√Hz at 10 kHz),
low THD + N (0.0007%), and high precision performance
(250 µV max over V
CM
) to low voltage applications. The ability
to swing rail-to-rail at the input and output enables designers
to buffer analog-to-digital converters (ADCs) and other wide
dynamic range devices in single-supply systems.
The high precision performance of the AD8655/AD8656 improves
the resolution and dynamic range in low voltage applications.
Audio applications, such as microphone pre-amps and audio
mixing consoles, benefit from the low noise, low distortion, and
high output current capability of the AD8655/AD8656 to reduce
system level noise performance and maintain audio fidelity. The
high precision and rail-to-rail input and output of the AD8655/
AD8656 benefit data acquisition, process controls, and PLL
filter applications.
The AD8655/AD8656 are fully specified over the −40°C to
+125°C temperature range. The AD8655/AD8656 are available
in Pb-free, 8-lead MSOP and SOIC packages. The AD8655/
AD8656 are both available for automotive applications.
NC
1
–IN
2
+IN
3
V–
4
NC
8
V+
7
OUT
6
NC
5
AD8655
TOP VIEW
(Not to Scale)
05304-048
NC = NO CONNECT
OUT A
1
–IN A
2
+IN A
3
V–
4
V+
8
OUT B
7
–IN B
6
+IN B
5
AD8656
TOP VIEW
(Not to Scale)
05304-059
Downloaded from Arrow.com.
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