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AD622 Datasheet(PDF) 1 Page - Analog Devices

No. de pieza AD622
Descripción Electrónicos  Low Cost Instrumentation Amplifier
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Fabricante Electrónico  AD [Analog Devices]
Página de inicio  http://www.analog.com
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AD622 Datasheet(HTML) 1 Page - Analog Devices

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Low Cost Instrumentation Amplifier
Data Sheet
AD622
Rev. E
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
©1996–2012 Analog Devices, Inc. All rights reserved.
FEATURES
Easy to use
Low cost solution
Higher performance than two or three op amp design
Unity gain with no external resistor
Optional gains with one external resistor
(Gain range: 2 to 1000)
Wide power supply range: ±2.6 V to ±15 V
Available in 8-lead PDIP and 8-lead SOIC_N packages
Low power, 1.5 mA maximum supply current
DC performance
0.15% gain accuracy: G = 1
125 µV maximum input offset voltage
1.0 µV/°C maximum input offset drift
5 nA maximum input bias current
66 dB minimum common-mode rejection ratio: G = 1
Noise
12 nV/√Hz @ 1 kHz input voltage noise
0.60 µV p-p noise: 0.1 Hz to 10 Hz, G = 10
AC characteristics
800 kHz bandwidth: G = 10
10 µs settling time to 0.1% @ G = 1 to 100
1.2 V/µs slew rate
APPLICATIONS
Transducer interface
Low cost thermocouple amplifier
Industrial process controls
Difference amplifier
Low cost data acquisition
PIN CONFIGURATION
RG 1
–IN
2
+IN
3
–VS 4
RG
8
+VS
7
OUTPUT
6
REF
5
AD622
Figure 1. 8-Lead PDIP and 8-Lead SOIC_N
(N and R Suffixes)
GENERAL DESCRIPTION
The AD622 is a low cost, moderately accurate instrumentation
amplifier in the traditional pin configuration that requires only
one external resistor to set any gain between 2 and 1000. For a
gain of 1, no external resistor is required. The AD622 is a
complete difference or subtractor amplifier system that also
provides superior linearity and common-mode rejection by
incorporating precision laser-trimmed resistors.
The AD622 replaces low cost, discrete, two or three op amp
instrumentation amplifier designs and offers good common-
mode rejection, superior linearity, temperature stability,
reliability, power, and board area consumption. The low cost of
the AD622 eliminates the need to design discrete
instrumentation amplifiers to meet stringent cost targets. While
providing a lower cost solution, it also provides performance
and space improvements.
Table 1. Next Generation Upgrades for AD622
Part
Comment
AD8221
Better specs at lower price
AD8222
Dual channel or differential out
AD8226
Low power, wide input range
AD8220
JFET input
AD8228
Best gain accuracy
AD8295
+2 precision op amps or differential out
AD8421
Low noise, better specs


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