Very Low Distortion, Dual-Channel, High Precision Difference Amplifier AD8273 FEATURES FUNCTIONAL BLOCK DIAGRAM +V S 4000 V HBM ESD 11 Very low distortion 12k 6k 2 12 0.00025% THD + N (20 kHz) 0.0015% THD + N (100 kHz) 13 Drives 600 loads 12k 6k Two gain settings 3 14 12k 6k Gain of (6 dB) 6 10 Gain of 2 (+6 dB) 0.05% maximum gain error 9 10 ppm/C maximum gain drift 12k 6k 58 Excellent ac specifications 4 20 V/s minimum slew rate V S 800 ns to 0.01% settling time Figure 1. High accuracy dc performance 77 dB minimum CMRR 700 V maximum offset voltage 14-lead SOIC package Supply current: 2.5 mA maximum per channel Supply range: 2.5 V to 18 V 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 Table 1. Difference Amplifiers by Category internal gain setting resistors. With no external components, it Low High Single-Supply Single-Supply can be configured as a high performance difference amplifier Distortion Voltage Unidirectional Bidirectional (G = or 2), inverting amplifier (G = or 2), or noninverting AD8270 AD628 AD8202 AD8205 amplifier (G = 1 or 3). AD8273 AD629 AD8203 AD8206 The AD8273 operates on both single and dual supplies and only AD8274 AD8216 requires 2.5 mA maximum supply current for each amplifier. It AMP03 is specified over the industrial temperature range of 40C to +85C and is fully RoHS compliant. Rev. B 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 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. rights of third parties that may result from its use. Specifications subject to change without notice. No Tel: 781.329.4700 www.analog.com license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Fax: 781.461.3113 20082010 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. 06981-001AD8273 TABLE OF CONTENTS Features .............................................................................................. 1 Pin Configuration and Function Descriptions..............................5 Applications....................................................................................... 1 Typical Performance Characteristics ..............................................6 Functional Block Diagram .............................................................. 1 Theory of Operation ...................................................................... 12 General Description ......................................................................... 1 Configurations............................................................................ 12 Revision History ............................................................................... 2 Power Supplies............................................................................ 12 Specifications..................................................................................... 3 Outline Dimensions....................................................................... 14 Absolute Maximum Ratings............................................................ 4 Ordering Guide .......................................................................... 14 Maximum Power Dissipation ..................................................... 4 ESD Caution.................................................................................. 4 REVISION HISTORY 8/10Rev. A to Rev. B Changes to Data Sheet Title ............................................................ 1 Changes to THD + Noise (THD + N) Parameter, Gain Nonlinearity Parameter, and Offset vs. Power Supply Parameter, Table 2 ................................................................................................ 3 Changed 12A Pin to INA Pin, +12A Pin to +INA Pin, +12B Pin to INB Pin, 12B Pin to INB Pin, +6B Pin to REFB Pin, 6B Pin to SENSEB Pin, 6A Pin to SENSEA Pin, and +6A Pin to REFA Pin Throughout ................................................................ 5 Changes to Figure 3 and Table 4..................................................... 5 1/09Rev. 0 to Rev. A Changes to Product Title, Features Section, and Applications Section................................................................................................ 1 Added Human Body Model (HBM) ESD Rating Parameter, Table 3 ................................................................................................ 4 Changes to Figure 6 to Figure 9...................................................... 6 Changes to Figure 10 to Figure 12.................................................. 7 Changes to Figure 18........................................................................ 8 Deleted Figure 31 Renumbered Sequentially ............................ 10 Added Figure 31 to Figure 33 Renumbered Sequentially ........ 10 Added Figure 34 to Figure 36........................................................ 11 1/08Revision 0: Initial Version Rev. B Page 2 of 16