High Common-Mode Voltage, Single-Supply Difference Amplifier Data Sheet AD8202 FEATURES FUNCTIONAL BLOCK DIAGRAMS NC A1 A2 +V High common-mode voltage range S 7 3 4 6 6 V to +28 V at a 5 V supply voltage AD8202 Operating temperature range: 40C to +125C 100k Supply voltage range: 3.5 V to 12 V G = 10 G = 2 Low-pass filter (1-pole or 2-pole) 8 +IN +IN +IN 5 OUT A1 A2 Excellent ac and dc performance 1 IN IN IN 10k 1 mV voltage offset 200k 200k 1 ppm/C typical gain drift 10k 80 dB CMRR min dc to 10 kHz Qualified for automotive applications 2 NC = NO CONNECT GND APPLICATIONS Figure 1. SOIC (R) Package Die Form Transmission control Diesel injection control INDUCTIVE LOAD 5V Engine management CLAMP OUTPUT DIODE Adaptive suspension control +IN NC +V OUT S Vehicle dynamics control BATTERY 14V 4-TERM AD8202 SHUNT GENERAL DESCRIPTION The AD8202 is a single-supply difference amplifier for amplifying IN GND A1 A2 POWER and low-pass filtering small differential voltages in the presence of a DEVICE large common-mode voltage (CMV). The input CMV range extends from 6 V to +28 V at a typical supply voltage of 5 V. NC = NO CONNECT COMMON The AD8202 is available in die and packaged form. The MSOP and SOIC packages are specified over a wide temperature range, Figure 2. High Line Current Sensor from 40C to +125C, making the AD8202 well-suited for use POWER in many automotive platforms. DEVICE 5V OUTPUT Automotive platforms demand precision components for +IN NC +V OUT S better system control. The AD8202 provides excellent ac and BATTERY 14V dc performance keeping errors to a minimum in the users 4-TERM AD8202 SHUNT system. Typical offset and gain drift in the SOIC package are 0.3 V/C and 1 ppm/C, respectively. Typical offset and gain IN GND A1 A2 drift in the MSOP package are 2 V/C and 1 ppm/C, respec- tively. The device also delivers a minimum CMRR of 80 dB CLAMP INDUCTIVE from dc to 10 kHz. DIODE LOAD The AD8202 features an externally accessible 100 k resistor COMMON NC = NO CONNECT at the output of the Preamp A1 that can be used for low-pass Figure 3. Low Line Current Sensor filter applications and for establishing gains other than 20. Rev. H 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 20042013 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 04981-001 04981-003 04981-002AD8202 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Theory of Operation ...................................................................... 12 Applications ....................................................................................... 1 Applications ..................................................................................... 14 General Description ......................................................................... 1 Current Sensing .......................................................................... 14 Functional Block Diagrams ............................................................. 1 Gain Adjustment ........................................................................ 14 Revision History ............................................................................... 2 Gain Trim .................................................................................... 15 Specifications ..................................................................................... 3 Low-Pass Filtering ...................................................................... 15 Single Supply ................................................................................. 3 High Line Current Sensing with LPF and Gain Adjustment 16 Absolute Maximum Ratings ............................................................ 4 Driving Charge Redistribution ADCs ..................................... 16 ESD Caution .................................................................................. 4 Outline Dimensions ....................................................................... 17 Pin Configuration and Function Descriptions ............................. 5 Ordering Guide .......................................................................... 17 Typical Performance Characteristics ............................................. 6 Automotive Products ................................................................. 17 REVISION HISTORY 5/13Rev. G to Rev. H 2/05Rev. B to Rev. C Added Unit of mV to Initial Input Offset (RTI), TOPR Parameter Changes to Table 1 ............................................................................. 3 Table 1 ................................................................................................ 3 Changes to Figure 14 ......................................................................... 8 Changes to Figure 22 ......................................................................... 9 2/13Rev. F to Rev. G 1/05Rev. A to Rev. B Changes to Features Section and General Description Section ....... 1 Changes to Table 1 ............................................................................ 3 Changes to the General Description ............................................... 1 Changes to Ordering Guide .......................................................... 17 Changes to Specifications ................................................................. 3 Added Figure 14 to Figure 33 .......................................................... 8 4/12Rev. E to Rev. F Changes to Figure 38 ...................................................................... 14 Changes to Figure 40 and Figure 41 ............................................ 15 Changes to Table 3 and Figure 5 ..................................................... 5 Changes to Ordering Guide .......................................................... 16 10/11Rev. D to Rev. E 11/04Rev. 0 to Rev. A Change to Features Section ............................................................. 1 Changes to the Features .................................................................... 1 Changes to Ordering Guide .......................................................... 17 Changes to the General Description ............................................... 1 Updated Outline Dimensions ....................................................... 17 Changes to Specifications (Table 1) ................................................ 3 Added Automotive Products Section........................................... 17 Changes to Absolute Maximum Ratings (Table 2) ....................... 4 11/05Rev. C to Rev. D Changes to Pin Function Descriptions (Table 3) .......................... 5 Changes to Figure 5 ........................................................................... 5 Updated Format .................................................................. Universal Changes to Figure 9 and Figure 10 .................................................. 6 Changes to Typical Performance Characteristics ........................ 6 Updated Outline Dimensions ....................................................... 12 Added Figure 18 ................................................................................ 8 Changes to the Ordering Guide ................................................... 12 Added Figure 25 to Figure 27.......................................................... 9 Added Figure 32 .............................................................................. 10 7/04Revision 0: Initial Version Added Figure 37 to Figure 39........................................................ 11 Changes to Theory of Operation .................................................. 12 Added Figure 41 .............................................................................. 13 Rev. H Page 2 of 20