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AD8228ARMZ1 Datasheet(Fiches technique) 1 Page - Analog Devices

Numéro de pièce AD8228ARMZ1
Description  Low Gain Drift Precision Instrumentation Amplifier
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Fabricant  AD [Analog Devices]
Site Internet  http://www.analog.com
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Low Gain Drift
Precision Instrumentation Amplifier
AD8228
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other
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
©2008 Analog Devices, Inc. All rights reserved.
FEATURES
Easy to use
Pin strappable gains of 10 and 100
Wide power supply range: ±2.3 V to ±18 V
DC specifications (B Grade, G = 10)
2 ppm/°C gain drift
0.02% gain error
50 μV maximum input offset voltage
0.8 μV/°C maximum input offset drift
0.6 nA maximum input bias current
100 dB CMRR
AC specifications
650 kHz, –3 dB bandwidth (G = 10)
2 V/μs slew rate
Low noise
8 nV/√Hz, @ 1 kHz (G = 100)
0.3 μV p-p from 0.1 Hz to 10 Hz (G = 100)
APPLICATIONS
Weigh scales
Industrial process controls
Bridge amplifiers
Precision data acquisition systems
Medical instrumentation
Strain gages
Transducer interfaces
GENERAL DESCRIPTION
The AD8228 is a high performance instrumentation amplifier
with very high gain accuracy. Because all gain setting resistors
are internal and laser trimmed, gain accuracy and gain drift
are better than can be achieved with typical instrumentation
amplifiers.
Low voltage offset, low offset drift, low gain drift, high gain
accuracy, and high CMRR make this part an excellent choice
in applications that demand the best dc performance possible,
such as bridge signal conditioning.
CONNECTION DIAGRAM
8
7
6
5
1
2
3
4
–IN
G1
G2
+VS
VOUT
REF
–VS
+IN
TOP VIEW
(Not to Scale)
AD8228
Figure 1.
Table 1. Instrumentation Amplifiers by Category
General
Purpose
Zero
Drift
Military
Grade
Low
Power
High Speed
PGA
AD82201
AD82311
AD620
AD6271
AD8250
AD8221
AD85531
AD621
AD6231
AD8251
AD8222
AD85551
AD524
AD8253
AD82241
AD85561
AD526
AD8228
AD85571
AD624
1 Rail-to-rail output.
The AD8228 operates on both single and dual supplies. Because
the part can operate on supplies up to ±18 V, it is well suited for
applications where high common-mode input voltages are
encountered. The AD8228 is available in 8-lead MSOP and
SOIC packages.
Performance is specified over the entire industrial temperature
range of −40°C to +85°C for all grades. Furthermore, the AD8228
is operational from −40°C to +125°C. For a pin-compatible ampli-
fier with similar specifications, but with a gain range of 1 to 1000,
see the AD8221.




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