High Voltage, Current Shunt Monitor Data Sheet AD8211 FEATURES FUNCTIONAL BLOCK DIAGRAM V V IN+ IN Qualified for automotive applications 4000 V human body model (HBM) electrostatic discharge (ESD) High common-mode input voltage range: 2 V to +65 V Continuous input voltage range: 3 V to +68 V V+ A1 Buffered output voltage Wide operating temperature range PROPRIETARY OFFSET 5-lead SOT: 40C to +125C CIRCUITRY Excellent ac and dc performance 5 V/C typical offset drift OUT 13 ppm/C typical gain vs. temperature G = +20 120 dB typical common-mode rejection ratio (CMRR) at dc AD8211 APPLICATIONS GND High-side current sensing Figure 1. Motor controls Transmission controls Engine management Suspension controls Vehicle dynamic controls DC-to-dc converters GENERAL DESCRIPTION The AD8211 is a high voltage, precision current shunt amplifier. It Special circuitry is devoted to output linearity being maintained features a set gain of 20 V/V, with a typical 0.35% gain error throughout the input differential voltage range of 0 mV to 250 mV, over the entire temperature range. The buffered output voltage regardless of the common-mode voltage present. The AD8211 directly interfaces with any typical converter. Excellent common- has an operating temperature range of 40C to +125C and is mode rejection from 2 V to +65 V is independent of the 5 V offered in a small 5-lead SOT package. supply. The AD8211 performs unidirectional current measurements across a shunt resistor in a variety of industrial and automotive applications, such as motor control, solenoid control, or battery management. Rev. C 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 20072016 Analog Devices, Inc. All rights reserved. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Technical Support www.analog.com Trademarks and registered trademarks are the property of their respective owners. 06824-001AD8211 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Application Notes ........................................................................... 11 Applications ....................................................................................... 1 Output Linearity ......................................................................... 11 Functional Block Diagram .............................................................. 1 Applications Information .............................................................. 12 General Description ......................................................................... 1 High-Side Current Sense with a Low-Side Switch ................. 12 Revision History ............................................................................... 2 High-Side Current Sensing ....................................................... 12 Specif icat ions ..................................................................................... 3 Low-Side Current Sensing ........................................................ 12 Absolute Maximum Ratings ............................................................ 4 Outline Dimensions ....................................................................... 13 ESD Caution .................................................................................. 4 Ordering Guide .......................................................................... 13 Pin Configuration and Function Descriptions ............................. 5 Automotive Products ................................................................. 13 Typical Performance Characteristics ............................................. 6 Theory of Operation ...................................................................... 10 REVISION HISTORY 12/2016Rev. B to Rev. C Changes to General Description, Gain Error Percentage ............ 1 Changes to Figure 27 ........................................................................... Changes to Table 1 ............................................................................. 3 Changes to Table 2 ............................................................................. 4 11/2015Rev. A to Rev. B Updated Outline Dimensions ....................................................... 13 Changes to Figure 3 .......................................................................... 5 Changes to Ordering Guide .......................................................... 13 Changes to Figure 25 to Figure 27 ................................................ 12 7/2007Revision 0: Initial Version 3/2011Rev. 0 to Rev. A Added Automotive Products Information ................. Throughout Rev. C Page 2 of 13