Programmable Gain Precision Difference Amplifier AD8271 FEATURES FUNCTIONAL BLOCK DIAGRAM With no external resistors 10k 10k Difference amplifier, gains of , 1, or 2 1 10 P1 N3 Single-ended amplifier: over 40 different gains 10k 10k Set reference voltage at midsupply 2 9 P2 N2 Excellent ac specifications 15 MHz bandwidth 10k 20k P3 3 8 N1 30 V/s slew rate High accuracy dc performance OUT 20k 4 7 P4 0.08% maximum gain error 10 ppm/C maximum gain drift 80 dB minimum CMRR (gain of 2) 5 6 V +V S S AD8271 10-lead MSOP package Supply current: 2.6 mA Figure 1. Supply range: 2.5 V to 18 V APPLICATIONS ADC driver Instrumentation amplifier building blocks Level translators Automatic test equipment High performance audio Sine/cosine encoders GENERAL DESCRIPTION Table 1. Difference Amplifiers by Category The AD8271 is a low distortion, precision difference amplifier High High Single-Supply Single-Supply with internal gain setting resistors. With no external components, Speed Voltage Unidirectional Bidirectional it can be configured as a high performance difference amplifier AD8270 AD628 AD8202 AD8205 with gains of , 1, or 2. It can also be configured in over 40 single- AD8273 AD629 AD8203 AD8206 ended configurations, with gains ranging from 2 to +3. AD8274 AD8216 AMP03 The AD8271 comes in a 10-lead MSOP package. The AD8271 operates on both single and dual supplies and requires only a 2.6 mA maximum supply current. It is specified over the industrial temperature range of 40C to +85C and is fully RoHS compliant. For a dual channel version of the AD8271, see the AD8270 data sheet. Rev. 0 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 2009 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. 07363-001AD8271 TABLE OF CONTENTS Features .............................................................................................. 1 Circuit Information .................................................................... 15 Applications ....................................................................................... 1 Driving the AD8271 ................................................................... 15 Functional Block Diagram .............................................................. 1 Power Supplies ............................................................................ 15 General Description ......................................................................... 1 Input Voltage Range ................................................................... 15 Revision History ............................................................................... 2 Applications Information .............................................................. 16 Specif icat ions ..................................................................................... 3 Difference Amplifier Configurations ...................................... 16 Difference Amplifier Configurations ........................................ 3 Single-Ended Configurations ................................................... 17 Absolute Maximum Ratings ............................................................ 6 Kelvin Measurement .................................................................. 18 Thermal Resistance ...................................................................... 6 Instrumentation Amplifier........................................................ 18 Maximum Power Dissipation ..................................................... 6 Driving Cabling .......................................................................... 19 ESD Caution .................................................................................. 6 Driving an ADC ......................................................................... 19 Pin Configuration and Function Description .............................. 7 Outline Dimensions ....................................................................... 20 Typical Performance Characteristics ............................................. 8 Ordering Guide .......................................................................... 20 Operational Amplifier Plots ...................................................... 14 Theory of Operation ...................................................................... 15 REVISION HISTORY 1/09Revision 0: Initial Version Rev. 0 Page 2 of 20