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AD8221TRMZ-EP

更新时间： 2024-11-03 20:04:47
品牌 Logo 应用领域
亚德诺 - ADI 放大器光电二极管
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14页 278K
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Precision Instrumentation Amplifier

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AD8221TRMZ-EP 数据手册

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