Bidirectional, Zero Drift, Current Sense Amplifier Data Sheet AD8417 FEATURES GENERAL DESCRIPTION Typical 0.1 V/C offset drift The AD8417 is a high voltage, high resolution current shunt Maximum 400 V voltage offset over full temperature range amplifier. It features an initial gain of 60 V/V, with a maximum 2.7 V to 5.5 V power supply operating range 0.3% gain error over the entire temperature range. The Electromagnetic interference (EMI) filters included buffered output voltage directly interfaces with any typical High common-mode input voltage range converter. The AD8417 offers excellent input common-mode 2 V to +70 V continuous rejection from 2 V to +70 V. The AD8417 performs bidirectional 4 V to +85 V survival current measurements across a shunt resistor in a variety of Initial gain = 60 V/V automotive and industrial applications, including motor control, Wide operating temperature range power management, and solenoid control. AD8417WB: 40C to +125C The AD8417 offers breakthrough performance throughout the AD8417WH: 40C to +150C 40C to +150C temperature range. It features a zero drift core, Bidirectional operation which leads to a typical offset drift of 0.1 V/C throughout the Available in 8-lead SOIC and 8-lead MSOP operating temperature range and the common-mode voltage Common-mode rejection ratio (CMRR): 86 dB, dc to 10 kHz range. The AD8417 is qualified for automotive applications. The Qualified for automotive applications device includes EMI filters and patented circuitry to enable output accuracy with pulse-width modulation (PWM) type APPLICATIONS input common-mode voltages. The typical input offset voltage High-side current sensing in is 200 V. The AD8417 is offered in 8-lead MSOP and SOIC Motor controls packages. Solenoid controls Power management Table 1. Related Devices Low-side current sensing Part No. Description Diagnostic protection AD8205 Current sense amplifier, gain = 50 AD8206 Current sense amplifier, gain = 20 AD8207 High accuracy current sense amplifier, gain = 20 AD8210 High speed current sense amplifier, gain = 20 AD8418 High accuracy current sense amplifier, gain = 20 FUNCTIONAL BLOCK DIAGRAM V = 2V TO +70V V = 2.7V TO 5.5V CM S 70V V V 1 S REF V OUT V V S AD8417 CM +IN EMI + FILTER I SHUNT 0V OUT G = 60 R SHUNT V /2 S IN EMI FILTER 50A I SHUNT 0V GND V 2 REF 50A Figure 1. 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 20132017 Analog Devices, Inc. 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Technical Support www.analog.com Trademarks and registered trademarks are the property of their respective owners. 11882-001AD8417 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Unidirectional Operation .......................................................... 11 Applications ....................................................................................... 1 Bidirectional Operation ............................................................. 11 General Description ......................................................................... 1 External Referenced Output ..................................................... 12 Functional Block Diagram .............................................................. 1 Splitting the Supply .................................................................... 12 Revision History ............................................................................... 2 Splitting an External Reference ................................................ 12 Specifications ..................................................................................... 3 Applications Information .............................................................. 13 Absolute Maximum Ratings ............................................................ 4 Motor Control ............................................................................. 13 ESD Caution .................................................................................. 4 Solenoid Control ........................................................................ 14 Pin Configuration and Function Descriptions ............................. 5 Outline Dimensions ....................................................................... 15 Typical Performance Characteristics ............................................. 6 Ordering Guide .......................................................................... 16 Theory of Operation ...................................................................... 10 Automotive Products ................................................................. 16 Output Offset Adjustment ............................................................. 11 REVISION HISTORY 10/2017Rev. B to Rev. C Change to Splitting an External Reference Section .................... 12 4/2015Rev. A to Rev. B Change to Figure 36 ....................................................................... 14 11/2014Rev. 0 to Rev. A Added AD8417WH ............................................................ Universal Changes to Features Section and General Description Section ........ 1 Changes to Specifications Section and Table 2 ............................. 3 Changes to Table 3 ............................................................................ 4 Changes to Ordering Guide .......................................................... 16 11/2013Revision 0: Initial Version Rev. C Page 2 of 16