AD8209WHRMZ Analog Devices

High Voltage, Precision Difference Amplifier Data Sheet AD8209 FEATURES FUNCTIONAL BLOCK DIAGRAM V S A1 A2 8000 V HBM ESD for shunt-based applications AEC-Q100 qualified EMI FILTER AD8209 EMI filters included EMI High common-mode voltage range IN+ + + FILTER G = 7 G = 2 OUT 2 V to +45 V operating EMI IN FILTER 24 V to +80 V survival Buffered output voltage Gain = 14 V/V Low-pass filter (single-pole or two-pole) Wide operating temperature range GND 40C to +125C for WB grade Figure 1. 40C to +150C for WH grade Excellent ac and dc performance 1 mV voltage offset 5 ppm/C typical gain drift 80 dB CMRR minimum dc to 10 kHz Qualified for automotive applications APPLICATIONS High-side current sensing Motor controls Solenoid controls Power management Low-side current sensing Diagnostic protection GENERAL DESCRIPTION The AD8209 is a single-supply difference amplifier ideal for performance, minimizing errors in the application. Typical offset amplifying and low-pass filtering small differential voltages in the and gain drift in the MSOP package are less than 5 V/C and presence of a large common-mode voltage. The input common- 10 ppm/C, respectively. The device also delivers a minimum mode voltage range extends from 2 V to +45 V at a single +5 V CMRR of 80 dB from dc to 10 kHz. supply. The AD8209 is qualified per AEC-Q100 specifications. The The AD8209 features an externally accessible 100 k resistor at amplifier offers enhanced input overvoltage and ESD protection, the output of the preamplifier (A1), which can be used for low- and includes EMI filtering. pass filtering and for establishing gains other than 14. Automotive applications demand robust, precision components for improved system control. The AD8209 provides excellent ac and dc 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 20092016 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 08461-001AD8209 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 High-Side Current Sensing with a Low-Side Switch ............. 12 Applications ....................................................................................... 1 High-Rail Current Sensing ....................................................... 12 Functional Block Diagram .............................................................. 1 Low-Side Current Sensing ........................................................ 12 General Description ......................................................................... 1 Gain Adjustment ........................................................................ 13 Revision History ............................................................................... 2 Gain Trim .................................................................................... 14 Specif icat ions ..................................................................................... 3 Low-Pass Filtering ...................................................................... 14 Absolute Maximum Ratings ............................................................ 5 High Line Current Sensing with LPF and Gain Adjustment ...... 15 ESD Caution .................................................................................. 5 Outline Dimensions ....................................................................... 16 Pin Configuration and Function Descriptions ............................. 6 Ordering Guide .......................................................................... 16 Typical Performance Characteristics ............................................. 7 Automotive Products ................................................................. 16 Theory of Operation ...................................................................... 11 Applications Information .............................................................. 12 REVISION HISTORY 12/2016Rev. B to Rev. C 2/2013Rev. 0 to Rev. A Changes to Figure 27 ....................................................................... 12 Change to Features ............................................................................ 1 Changes to Figure 3 and Table 3 ...................................................... 5 10/2013Rev. A to Rev. B Change to Ordering Guide ............................................................. 15 Changes to Features Section............................................................ 1 Added Automotive Products Section ........................................... 15 Changes to Table Summary Statement and Table 1 ..................... 3 10/2009Revision 0: Initial Version Changes to Table 2 ............................................................................ 5 Changes to Gains Greater than 14 Section and Figure 30 ........ 13 Changes to Ordering Guide .......................................................... 16 Rev. C Page 2 of 16