Datasheet AD8219 (Analog Devices)

Zero Drift, Unidirectional Current Shunt Monitor AD8219 FEATURES FUNCTIONAL BLOCK DIAGRAM High common-mode voltage range VS 4 V to 80 V operating R4 −0.3 V to +85 V survival LDO R1 Buffered output voltage –IN Gain = 60 V/V OUT +IN Wide operating temperature range: −40°C to +125°C R2 R3 Excellent ac and dc performance AD8219 ±100 nV/°C typical offset drift
01 0
GND
5-
±50 µV typical offset
941 0
±5 ppm/°C typical gain drift
Figure 1.
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 −40°C to +125°C 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 μV. power management, and base station power amplifier bias The AD8219 is offered in a 8-lead MSOP package. control.
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Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION AMPLIFIER CORE SUPPLY CONNECTIONS OUTPUT CLAMPING OUTPUT LINEARITY APPLICATIONS INFORMATION HIGH-SIDE CURRENT SENSING MOTOR CONTROL CURRENT SENSING OUTLINE DIMENSIONS ORDERING GUIDE