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Very Low Distortion, Dual-Channel, High Precision Difference Amplifier
AD8273
FEATURES
±4000 V HBM ESD Very low distortion
0.00025% THD + N (20 kHz) 0.0015% THD + N (100 kHz) Drives 600 Ω loads Two gain settings Gain of ½ (−6 dB) Gain of 2 (+6 dB) 0.05% maximum gain error 10 ppm/°C maximum gain drift Excellent ac specifications 20 V/μs minimum slew rate 800 ns to 0.01% settling time High accuracy dc performance 77 dB minimum CMRR 700 μV maximum offset voltage 14-lead SOIC package Supply current: 2.5 mA maximum per channel Supply range: ±2.5 V to ±18 V
FUNCTIONAL BLOCK DIAGRAM
+VS
11
12kΩ 2
6kΩ
12
12kΩ 3
12kΩ 6
6kΩ 6kΩ
13 14 10
06981-001
12kΩ 5
6kΩ
4 –VS
Figure 1.
9 8
APPLICATIONS
ADC drivers High performance audio Instrumentation amplifier building blocks Level translators Automatic test equipment Sine/cosine encoders
GENERAL DESCRIPTION
The AD8273 is a low distortion, dual-channel amplifier with internal gain setting resistors. With no external components, it can be configured as a high performance difference amplifier (G = ½ or 2), inverting amplifier (G = ½ or 2), or noninverting amplifier (G = 1½ or 3).
The AD8273 operates on both single and dual supplies and only requires 2.5 mA maximum supply current for each amplifier. It is specified over the industrial temperature range of −40°C to +85°C and is fully RoHS compliant.
Table 1. Difference Amplifiers by Category
Low Distortion AD8270 AD8273 AD8274 AMP03
High Voltage
AD628 AD629
Single-Supply Unidirectional
AD8202 AD8203
Single-Supply Bidirectional
AD8205 AD8206 AD8216
Rev. B
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Fax: 781.461.3113 ©2008–2010 Analog Devices, Inc. All rights reserved.
AD8273* Product Page Quick Links
Last Content Update: 11/01/2016
Comparable Parts
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Evaluation Kits
• AD8273/AD8277/AD8279 Evaluation Board
Documentation
Application Notes • AN-1328: High Performance, Low Noise Studio
Microphone with MEMS Microphones, Analog Beamforming, and Power Management Data Sheet • AD8273: Very Low Distortion, Dual-Channel, High Precision Difference Amplifier Data Sheet Technical Books • A Designer's Guide to Instrumentation Amplifiers, 3rd Edition, 2006 User Guides • UG-744: Evaluating the AD8273/AD8277/AD8279
Reference Materials
Technical Articles • High-performance Adder Uses Instrumentation Amplifiers
Design Resources
• AD8273 Material Declaration • PCN-PDN Information • Quality And Reliabi.