Low Power, Rail-to-Rail, Output Precision JFET Amplifier AD8643-EP FEATURES PIN CONFIGURATION Low supply current: 250 A maximum OUT A 1 14 OUT D Very low input bias current: 1 pA maximum IN A 2 13 IN D Low offset voltage: 750 V maximum +IN A 3 12 +IN D AD8643-EP Single-supply operation: 5 V to 26 V V+ 4 TOP VIEW 11 V Dual-supply operation: 2.5 V to 13 V (Not to Scale) +IN B 5 10 +IN C Rail-to-rail output IN B 6 9 IN C Unity-gain stable OUT B 7 8 OUT C No phase reversal Figure 1. 14-Lead SOIC (R-14) ENHANCED PRODUCT FEATURES Supports defense and aerospace applications (AQEC standard) Military temperature range (55C to +125C) Controlled manufacturing baseline 1 assembly/test site 1 fabrication site Enhanced product change notification Qualification data available on request APPLICATIONS Line-/battery-powered instruments Photodiode amplifiers Precision current sensing Precision filters Portable audio GENERAL DESCRIPTION The AD8643-EP is a low power, precision JFET input amplifier The AD8643-EP is suitable for applications using multichannel boards that require low power to manage heat. Other applications featuring extremely low input bias current and rail-to-rail output. The ability to swing nearly rail-to-rail at the input and rail-to-rail at include photodiodes and battery management. the output enables designers to buffer CMOS digital-to-analog The AD8643-EP is fully specified over the military temperature converters (DACs), ASICs, and other wide output swing devices range of 55C to +125C. This device is available in a 14-lead SOIC. in single-supply systems. The outputs remain stable with capacitive Additional applications information is available in the AD8643 loads of more than 500 pF. 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 2011 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. 09590-103AD8643-EP TABLE OF CONTENTS Features .............................................................................................. 1 Electrical Characteristics..............................................................3 Enhanced Product Features ............................................................ 1 Absolute Maximum Ratings ............................................................5 Applications....................................................................................... 1 Thermal Resistance.......................................................................5 Pin Configuration............................................................................. 1 ESD Caution...................................................................................5 General Description ......................................................................... 1 Typical Performance Characteristics ..............................................6 Revision History ............................................................................... 2 Outline Dimensions....................................................................... 12 Specifications..................................................................................... 3 Ordering Guide .......................................................................... 12 REVISION HISTORY 1/11Revision 0: Initial Version Rev. 0 Page 2 of 12