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


Product details


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 Automotive open-in-new Find other Signal conditioners

Package | Pins | Size

VQFN (RGW) 20 25 mm² 5 x 5 open-in-new Find other Signal conditioners


  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature Range
    • Device HBM ESD Classification Level 1C
    • Device CDM ESD Classification Level C6
  • 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
  • Compact Footprint

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The DRV401-Q1 device is fully qualified for automotive applications and is suitable for motor control drive and battery monitoring systems.

When used with a magnetic sensor, the DRV401-Q1 monitors 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-Q1 device directly drives the compensation coil or connects to external power drivers. Therefore, the DRV401-Q1 combines with sensors to measure small to large currents.

To maintain the highest accuracy, the DRV401-Q1 demagnetizes (degausses) the sensor at power-up and on demand.

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Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 6
Type Title Date
* Datasheet DRV401-Q1 Sensor Signal Conditioning Device for Closed-Loop Magnetic Current Sensor datasheet Aug. 12, 2016
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

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Reference designs

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

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VQFN (RGW) 20 View options

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