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Datasheet AD8221 (Analog Devices)

ПроизводительAnalog Devices
ОписаниеPrecision Instrumentation Amplifier
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Precision Instrumentation Amplifier. Enhanced Product. AD8221-EP. FEATURES. TYPICAL CONNECTION DIAGRAM

Datasheet AD8221 Analog Devices

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Precision Instrumentation Amplifier Enhanced Product AD8221-EP FEATURES TYPICAL CONNECTION DIAGRAM AD8221-EP Specified from −55°C to +125°C 0.9 μV/°C maximum input offset average TC –IN 1 8 +VS 10 ppm/°C maximum gain vs. temperature (G = 1) R 2 7 G VOUT Excellent ac specifications R 3 6 G REF 80 dB minimum CMRR at 10 kHz (G = 1) +IN 4 5 –VS
01 0
–3 dB bandwidth: 825 kHz typical (G = 1)
49-
TOP VIEW
031
2 V/μs typical slew rate
Figure 1.
Low noise GENERAL DESCRIPTION 8 nV/√Hz, at 1 kHz, maximum input voltage noise
The AD8221-EP is a gain programmable, high performance
0.25 μV p-p RTI (G = 100 to 1000)
instrumentation amplifier that delivers the industry’s highest
High accuracy dc performance
CMRR over frequency in its class. The CMRR of instrumentation
80 dB minimum CMRR DC to 60 Hz (G = 1)
amplifiers on the market today falls off at 200 Hz. In contrast, the
70 μV maximum input offset voltage
AD8221-EP maintains a minimum CMRR of 80 dB to 10 kHz at
2 nA maximum input bias current
G = 1. High CMRR over frequency allows the AD8221-EP to
Wide power supply range: ±2.3 V to ±18 V
reject wideband interference and line harmonics, greatly
Available in space-saving MSOP
simplifying filter requirements.
Gain set with 1 external resistor (gain range 1 to 1000)
Possible applications include precision data acquisition, biomedical
ENHANCED PRODUCT FEATURES
analysis, and aerospace instrumentation.
Supports defense and aerospace applications (AQEC standard)
Low voltage offset, low offset drift, low gain drift, high gain
Military temperature range (−55°C to +125°C)
accuracy, and high CMRR make this device an excellent choice
Controlled manufacturing baseline
in applications that demand the best dc performance possible, such
One assembly/test site
as bridge signal conditioning.
One fabrication site
Programmable gain affords the user design flexibility. A single
Enhanced product change notification
resistor sets the gain from 1 to 1000. The AD8221-EP operates
Qualification data available on request
on both single and dual supplies and is well suited for applications
APPLICATIONS
where ±10 V input voltages are encountered.
Bridge amplifiers
The AD8221-EP is specified over the −55°C to +125°C military
Precision data acquisition systems
temperature range. It is available in an 8-lead MSOP package.
Strain gages
Additional application and technical information can be found
Transducer interfaces
in the AD8221 data sheet.
120 110 AD8221-EP 100 90 B) d ( COMPETITOR 1 80 RR M C 70 60 COMPETITOR 2 50 40 10 100 1k 10k 100k
-002
FREQUENCY (Hz)
702 13 Figure 2. Typical CMRR vs. Frequency for G = 1
Rev. 0 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 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Tel: 781.329.4700 ©2016 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. Technical Support www.analog.com
Document Outline FEATURES ENHANCED PRODUCT FEATURES APPLICATIONS TYPICAL CONNECTION DIAGRAM GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL CHARACTERISTICS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS OUTLINE DIMENSIONS ORDERING GUIDE
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