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AD623 반도체 회로 부품 판매점

Low Cost Instrumentation Amplifier



Analog Devices 로고
Analog Devices
AD623 데이터시트, 핀배열, 회로
Data Sheet
Single and Dual-Supply, Rail-to-Rail,
Low Cost Instrumentation Amplifier
AD623
FEATURES
Easy to use
Rail-to-rail output swing
Input voltage range extends 150 mV below ground
(single supply)
Low power, 550 μA maximum supply current
Gain set with one external resistor
Gain range: 1 to 1000
High accuracy dc performance
0.10% gain accuracy (G = 1)
0.35% gain accuracy (G > 1)
Noise: 35 nV/√Hz RTI noise at 1 kHz
Excellent dynamic specifications
800 kHz bandwidth (G = 1)
20 μs settling time to 0.01% (G = 10)
APPLICATIONS
Low power medical instrumentation
Transducer interfaces
Thermocouple amplifiers
Industrial process controls
Difference amplifiers
Low power data acquisition
GENERAL DESCRIPTION
The AD623 is an integrated, single- or dual-supply instrumentation
amplifier that delivers rail-to-rail output swing using supply
voltages from 3 V to 12 V. The AD623 offers superior user
flexibility by allowing single gain set resistor programming and by
conforming to the 8-lead industry standard pinout configuration.
With no external resistor, the AD623 is configured for unity
gain (G = 1), and with an external resistor, the AD623 can be
programmed for gains of up to 1000.
The superior accuracy of the AD623 is the result of increasing
ac common-mode rejection ratio (CMRR) coincident with
increasing gain; line noise harmonics are rejected due to
constant CMRR up to 200 Hz. The AD623 has a wide input
common-mode range and amplifies signals with common-
mode voltages as low as 150 mV below ground. The AD623
maintains superior performance with dual and single polarity
power supplies.
Table 1. Low Power Upgrades for the AD623
Part No.
Total VS (V dc)
Typical IQ (μA)
AD8235
5.5
30
AD8236
5.5
33
AD8237
5.5
33
AD8226
36
350
AD8227
36
325
AD8420
36
85
AD8422
36
300
AD8426
36
325 (per channel)
2
–IN
VDIFF
2+
VCM
VDIFF
2+
+IN
3
FUNCTIONAL BLOCK DIAGRAM
+VS
7
50k50k
A1
–RG
RG
1
8
50k
50k
A3
+RG
4
–VS
50k50k
A2
Figure 1.
6
OUTPUT
5
REF
Rev. E
Document Feedback
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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.
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One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ©1997–2016 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com


AD623 데이터시트, 핀배열, 회로
AD623* Product Page Quick Links
Last Content Update: 11/01/2016
Comparable Parts
View a parametric search of comparable parts
Evaluation Kits
• AD62x, AD822x, AD842x Series InAmp Evaluation Board
Documentation
Application Notes
• AN-1401: Instrumentation Amplifier Common-Mode
Range: The Diamond Plot
• AN-244: A User's Guide to I.C. Instrumentation Amplifiers
• AN-245: Instrumentation Amplifiers Solve Unusual Design
Problems
• AN-282: Fundamentals of Sampled Data Systems
• AN-589: Ways to Optimize the Performance of a
Difference Amplifier
• AN-671: Reducing RFI Rectification Errors in In-Amp
Circuits
Data Sheet
• AD623: Single Supply, Rail-to-Rail, Low Cost
Instrumentation Amplifier Data Sheet
Technical Books
• A Designer's Guide to Instrumentation Amplifiers, 3rd
Edition, 2006
User Guides
• UG-261: Evaluation Boards for the AD62x, AD822x and
AD842x Series
Tools and Simulations
• In-Amp Error Calculator
• AD623 SPICE Macro-Model
Reference Materials
Technical Articles
• Auto-Zero Amplifiers
• High-performance Adder Uses Instrumentation Amplifiers
• Input Filter Prevents Instrumentation-amp RF-Rectification
Errors
• Low Power, Low Cost, Wireless ECG Holter Monitor
• Protecting Instrumentation Amplifiers
• The AD8221 - Setting a New Industry Standard for
Instrumentation Amplifiers
Design Resources
• AD623 Material Declaration
• PCN-PDN Information
• Quality And Reliability
• Symbols and Footprints
Discussions
View all AD623 EngineerZone Discussions
Sample and Buy
Visit the product page to see pricing options
Technical Support
Submit a technical question or find your regional support
number
* This page was dynamically generated by Analog Devices, Inc. and inserted into this data sheet. Note: Dynamic changes to
the content on this page does not constitute a change to the revision number of the product data sheet. This content may be
frequently modified.




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