Enhanced Product, Fluxgate Magnetic Sensor Signal Conditioning IC for Closed-Loop Applications


Product details


Features AFE for Magnetic Current Sensing Operating temperature range (C) -55 to 125 Vs (Min) (V) 4.5 Vs (Max) (V) 5.5 Interface type Analog voltage Rating HiRel Enhanced Product open-in-new Find other Signal conditioners

Package | Pins | Size

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


  • Designed For Sensors From VACUUMSCHMELZE (VAC)
  • Single Supply: 5 V
  • 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
    • Generator/Alternator Monitoring and Control
    • Frequency and Voltage Inverters
    • Motor Drive Controllers
    • System Power Consumption
    • Photovoltaic Systems
    • Controlled Baseline
    • One Assembly/Test Site
    • One Fabrication Site
    • Available in Military (–55°C/125°C) Temperature Range(1)
    • Extended Product Life Cycle
    • Extended Product-Change Notification
    • Product Traceability

(1) Custom temperature ranges available
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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

= Top documentation for this product selected by TI
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Type Title Date
* Datasheet Sensor Signal Conditioning IC for Closed-Loop Magnetic Current Sensor datasheet (Rev. B) Mar. 02, 2009
VID DRV401-EP VID V6208630 Jun. 21, 2016
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

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