JFET Input Instrumentation Amplifier with Rail-to-Rail Output in MSOP Package Enhanced Product AD8220-EP FEATURES PIN CONFIGURATION Low input currents AD8220-EP 1 8 IN +V S 25 pA maximum input bias current R 2 7 V 2 pA maximum input offset current G OUT 3 6 R REF High CMRR G +IN 4 5 V 92 dB CMRR (minimum) to 60 Hz, G = 10 S 72 dB CMRR (minimum) at 5 kHz, G = 1 Figure 1. Excellent ac specifications and low power 1.5 MHz bandwidth (G = 1) 14 nV/Hz input noise (1 kHz) 10000 Slew rate: 2 V/s 1 mA maximum quiescent supply current 1000 Versatile MSOP package 100 I BIAS Rail-to-rail output Input voltage range to below negative supply rail 10 7 kV ESD HBM protection I OS 4.5 V to 36 V single supply 1 2.25 V to 18 V dual supply Gain set with single resistor (G = 1 to 1000) 0.1 ENHANCED PRODUCT FEATURES 0.01 75 25 25 75 125 Supports defense and aerospace applications (AQEC standard) TEMPERATURE (C) Extended industrial temperature range: 55C to +125C Controlled manufacturing baseline Figure 2. Input Bias Current and Offset Current vs. Temperature 1 assembly/test site 1 fabrication site Product change notification Qualification data available on request can operate on a 18 V dual supply, as well as on a single 5 V supply. Its rail-to-rail output stage maximizes dynamic range on APPLICATIONS the low voltage supplies common in portable applications. Its Medical instrumentation ability to run on a single 5 V supply eliminates the need to use Precision data acquisition higher voltage, dual supplies. The AD8220-EP draws a maximum Transducer interfaces of 750 A of quiescent current at 25C, making it ideal for battery GENERAL DESCRIPTION powered devices. The AD8220-EP is the first single-supply, JFET input instrumenta- Gain is set from 1 to 1000 with a single resistor. Increasing the tion amplifier available in an MSOP package. Designed to meet gain increases the common-mode rejection. Measurements that the needs of high performance, portable instrumentation, the need higher CMRR when reading small signals benefit when AD8220-EP has a minimum common-mode rejection ratio the AD8220-EP is set for large gains. (CMRR) of 77 dB at dc and a minimum CMRR of 72 dB at 5 kHz A reference pin allows the user to offset the output voltage. This for G = 1. Maximum input bias current at 25C is 25 pA and feature is useful when interfacing with analog-to-digital converters. remains below 100 nA over the entire extended industrial The AD8220-EP is available in an MSOP that takes roughly half temperature range. Despite the JFET inputs, the AD8220-EP the board area of an SOIC. Performance is specified over the typically has a noise corner of only 10 Hz. extended industrial temperature range of 55C to +125C. With the proliferation of mixed-signal processing, the number Additional application and technical information can be found of power supplies required in each system has grown. The in the AD8220 data sheet. AD8220-EP is designed to alleviate this problem. The AD8220-EP Rev. A Document Feedback 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 2017 Analog Devices, Inc. All rights reserved. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. Technical Support www.analog.com INPUT BIAS CURRENT AND OFFSET CURRENT (pA) 15434-001 15434-002AD8220-EP Enhanced Product TABLE OF CONTENTS Features .............................................................................................. 1 Absolute Maximum Ratings ............................................................7 Enhanced Product Features ............................................................ 1 ESD Caution...................................................................................7 Applications ....................................................................................... 1 Pin Configuration and Function Descriptions ..............................8 General Description ......................................................................... 1 Typical Performance Characteristics ..............................................9 Pin Configuration ............................................................................. 1 Outline Dimensions ....................................................................... 11 Revision History ............................................................................... 2 Ordering Guide .......................................................................... 11 Specifications ..................................................................................... 3 REVISION HISTORY 11/2017Rev. 0 to Rev. A Changes to Table 1 ............................................................................ 4 Changes to Input Offset, VOSI, Average TC Parameter, Table 2 ......... 5 4/2017Revision 0: Initial Version Rev. A Page 2 of 11