AD8219BRMZ

Zero Drift, Unidirectional Current Shunt Monitor AD8219 FEATURES FUNCTIONAL BLOCK DIAGRAM V S High common-mode voltage range R4 4 V to 80 V operating 0.3 V to +85 V survival LDO R1 Buffered output voltage IN OUT Gain = 60 V/V +IN R2 Wide operating temperature range: 40C to +125C R3 Excellent ac and dc performance AD8219 100 nV/C typical offset drift GND 50 V typical offset Figure 1. 5 ppm/C typical gain drift 110 dB typical CMRR at dc APPLICATIONS High-side current sensing 48 V telecom Power management Base stations Unidirectional motor control Precision high voltage current sources GENERAL DESCRIPTION The AD8219 is a high voltage, high resolution, current shunt The AD8219 offers breakthrough performance throughout amplifier. It features a set gain of 60 V/V, with a maximum the 40C to +125C temperature range. It features a zero 0.3% gain error over the entire temperature range. The drift core, which leads to a typical offset drift of 100 nV/C buffered output voltage directly interfaces with any typical throughout the operating temperature and common-mode converter. The AD8219 offers excellent input common-mode voltage range. Special attention is devoted to output linearity rejection from 4 V to 80 V. The AD8219 performs unidirectional being maintained throughout the input differential voltage range, current measurements across a shunt resistor in a variety of regardless of the common-mode voltage present, while the industrial and telecom applications including motor control, typical input offset voltage is 50 V. power management, and base station power amplifier bias The AD8219 is offered in a 8-lead MSOP package. control. Rev. A 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 www.analog.com license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Fax: 781.461.3113 2011 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. 09415-001AD8219 TABLE OF CONTENTS Features .............................................................................................. 1 Amplifier Core............................................................................ 10 Applications....................................................................................... 1 Supply Connections ................................................................... 10 Functional Block Diagram .............................................................. 1 Output Clamping ....................................................................... 10 General Description ......................................................................... 1 Output Linearity......................................................................... 10 Revision History ............................................................................... 2 Applications Information .............................................................. 11 Specifications..................................................................................... 3 High-Side Current Sensing ....................................................... 11 Absolute Maximum Ratings............................................................ 4 Motor Control Current Sensing ............................................... 11 ESD Caution.................................................................................. 4 Outline Dimensions....................................................................... 12 Pin Configuration and Function Descriptions............................. 5 Ordering Guide .......................................................................... 12 Typical Performance Characteristics ............................................. 6 Theory of Operation ...................................................................... 10 REVISION HISTORY 2/11Rev. 0 to Rev. A Changes to Features Section............................................................ 1 Changes to Amplifier Core Section ............................................. 10 Moved Output Linearity Section into Theory of Operation Section.............................................................................................. 10 1/11Revision 0: Initial Version Rev. A Page 2 of 12