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| DRV401-Q1 Datasheet, PDF (14/39 Pages) Texas Instruments – DRV401-Q1 Sensor Signal Conditioning Device for Closed-Loop Magnetic Current Sensor | |||
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DRV401-Q1
SBOS814 â DECEMBER 2016
7 Detailed Description
www.ti.com
7.1 Overview
Closed-loop current sensors measure current over wide frequency ranges, including dc. These types of devices
offer a contact-free method, as well as excellent galvanic isolation performance combined with high resolution,
accuracy, and reliability. The DRV401-Q1 is a complete sensor signal conditioning circuit that directly connects to
the current sensor, providing all necessary functions for the sensor operation.
7.2 Functional Block Diagram
Compensation Winding
Primary Winding
Magnetic Core
Field Probe
IP
Compensation
RS
ICOMP1
ICOMP2
DRV401-Q1
IS2
IS1
Probe
Interface
Integrator
Filter
H-Bridge
Driver
Timing, Error Detection,
and Power Control
Degauss
Diff
Amp
VREF
VOUT
REFIN
VREF
5 V GND
Copyright © 2016, Texas Instruments Incorporated
14
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