DRV401

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Fluxgate Magnetic Sensor Signal Conditioning IC for Closed-Loop Applications

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Product details

Parameters

Features AFE for Magnetic Current Sensing Operating temperature range (C) -40 to 125 Vs (Min) (V) 4.5 Vs (Max) (V) 5.5 Interface type Analog voltage Rating Catalog open-in-new Find other Signal conditioners

Package | Pins | Size

HSOIC (DWP) 20 133 mm² 12.825 x 10.405000000000001 VQFN (RGW) 20 25 mm² 5 x 5 open-in-new Find other Signal conditioners

Features

  • DESIGNED FOR SENSORS FROM VACUUMSCHMELZE (VAC)
  • SINGLE SUPPLY: 5V
  • POWER OUTPUT: H-Bridge
  • DESIGNED FOR DRIVING INDUCTIVE LOADS
  • EXCELLENT DC PRECISION
  • WIDE SYSTEM BANDWIDTH
  • HIGH-RESOLUTION, LOW-TEMPERATURE DRIFT
  • BUILT-IN DEGAUSS SYSTEM
  • EXTENSIVE FAULT DETECTION
  • EXTERNAL HIGH-POWER DRIVER OPTION
  • APPLICATIONS
    • GENERATOR/ALTERNATOR MONITORING AND CONTROL
    • FREQUENCY AND VOLTAGE INVERTERS
    • MOTOR DRIVE CONTROLLERS
    • SYSTEM POWER CONSUMPTION
    • PHOTOVOLTAIC SYSTEMS

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Description

The DRV401 is designed to control and process signals from specific magnetic current sensors made by Vacuumschmelze GmbH & Co. KG (VAC). A variety of current ranges and mechanical configurations are available. Combined with a VAC sensor, the DRV401 monitors both ac and dc currents to high accuracy.

Provided functions include: probe excitation, signal conditioning of the probe signal, signal loop amplifier, an H-bridge driver for the compensation coil, and an analog signal output stage that provides an output voltage proportional to the primary current. It offers overload and fault detection, as well as transient noise suppression.

The DRV401 can directly drive the compensation coil, or connect to external power drivers. Therefore, the DRV401 combines with sensors to measure small to very large currents.

To maintain the highest accuracy, the DRV401 can demagnetize (degauss) the sensor at power-up and on demand.

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Technical documentation

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Type Title Date
* Datasheet Sensor Signal Conditioning IC for Closed-Loop Magnetic Current Sen. datasheet (Rev. B) May 01, 2009
White papers Achieve greater precision, reliability with magnetic sensing technology Jun. 26, 2017
Technical articles SigCon Architect: The keys to your high-speed design Oct. 27, 2015
Technical articles Make signal conditioning easy with WEBENCH® Interface Designer Jan. 27, 2015
Technical articles Get Connected: Equalization Oct. 15, 2014
Technical articles One part for all: Multi-standard signal conditioners Mar. 07, 2014

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Reference designs

REFERENCE DESIGNS Download
Differential Signal Conditioning Circuit for Current and Voltage Measurement Using Fluxgate Sensors
TIDA-00201 This design provides a 4-channel signal conditioning solution for differential ADCs integrated into a microcontroller measuring motor current using fluxgate sensors. Also provided is an alternative measurement circuit with external differential SAR ADCs as well as circuits for high-speed overcurrent (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
SO PowerPAD (DWP) 20 View options
VQFN (RGW) 20 View options

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