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FEATURES

SUPPORTS DEFENSE, AEROSPACE,

APPLICATIONS

DESCRIPTION/ORDERING INFORMATION

DRV401-EP

SENSOR SIGNAL CONDITIONING IC FOR

CLOSED-LOOP MAGNETIC CURRENT SENSOR

AND MEDICAL APPLICATIONS

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• Designed For Sensors From

• Controlled Baseline

VACUUMSCHMELZE (VAC)

• One Assembly/Test Site

• Single Supply: 5 V

• One Fabrication Site

• Power Output: H-Bridge

• Available in Military (–55°C/125°C)

• Designed For Driving Inductive Loads

• Excellent DC Precision

• Extended Product Life Cycle

• Wide System Bandwidth

• Extended Product-Change Notification

• High-Resolution, Low-Temperature Drift

• Product Traceability

• Built-In Degauss System

• Extensive Fault Detection

• External High-Power Driver Option

• Generator/Alternator Monitoring and Control

• Frequency and Voltage Inverters

• Motor Drive Controllers

• System Power Consumption

• Photovoltaic Systems

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Custom temperature ranges available

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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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

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PowerPAD is a trademark of Texas Instruments.

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All other trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Copyright © 2008, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.