Product details

Features Magnetic Field Sensor Operating temperature range (C) -40 to 125 Vs (Min) (V) 3 Interface type Analog voltage Vs (Max) (V) 5.5 Rating Automotive
Features Magnetic Field Sensor Operating temperature range (C) -40 to 125 Vs (Min) (V) 3 Interface type Analog voltage Vs (Max) (V) 5.5 Rating Automotive
WQFN (RTJ) 20 16 mm² 4 x 4
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Functional Safety-Capable
  • High-precision, integrated fluxgate sensor:
    • Offset: ±8 µT (max)
    • Offset drift: ±5 nT/°C (typ)
    • Gain error: 0.04% (typ)
    • Gain drift: ±7 ppm/°C (typ)
    • Linearity: ±0.1%
    • Noise: 1.5 nT/√Hz (typ)
  • Sensor range: ±2 mT (max)
    • Range and gain adjustable with external resistor
  • Selectable bandwidth: 47 kHz or 32 kHz
  • Precision reference:
    • Accuracy: 2% (max), drift: 50 ppm/°C (max)
    • Pin-selectable voltage: 2.5 V or 1.65 V
    • Selectable ratiometric mode: VDD / 2
  • Diagnostic features: Overrange and error flags
  • Supply voltage range: 3.0 V to 5.5 V
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Functional Safety-Capable
  • High-precision, integrated fluxgate sensor:
    • Offset: ±8 µT (max)
    • Offset drift: ±5 nT/°C (typ)
    • Gain error: 0.04% (typ)
    • Gain drift: ±7 ppm/°C (typ)
    • Linearity: ±0.1%
    • Noise: 1.5 nT/√Hz (typ)
  • Sensor range: ±2 mT (max)
    • Range and gain adjustable with external resistor
  • Selectable bandwidth: 47 kHz or 32 kHz
  • Precision reference:
    • Accuracy: 2% (max), drift: 50 ppm/°C (max)
    • Pin-selectable voltage: 2.5 V or 1.65 V
    • Selectable ratiometric mode: VDD / 2
  • Diagnostic features: Overrange and error flags
  • Supply voltage range: 3.0 V to 5.5 V

The DRV425-Q1 automotive device is designed for single-axis magnetic field-sensing applications, and enables electrically-isolated, high-sensitivity, and precise dc- and ac-field measurements. The device provides the unique and proprietary, integrated fluxgate sensor (IFG) with an internal compensation coil to support a high-accuracy sensing range of ±2 mT, with a measurement bandwidth of up to 47 kHz. The low offset, offset drift, and noise of the sensor, combined with the precise gain, low gain drift, and very low nonlinearity provided by the internal compensation coil, result in unrivaled magnetic field measurement precision.This high level of sensitivity and accuracy enables more current measurements in high-current busbar applications, such as traction inverters or battery-management systems. Torque sensor or motor diagnostic systems can benefit from the ability to precisely measure the position or displacement of a magnetic field. The output of the DRV425-Q1 is an analog signal proportional to the sensed magnetic field.

The device offers a complete set of features, including an internal difference amplifier, on-chip precision reference, and diagnostic functions to minimize component count and system-level cost.

The device is available in a thermally-enhanced, nonmagnetic, thin WQFN package, with a thermal pad for optimized heat dissipation, and is specified for operation over the automotive temperature range of –40°C to +125°C.



The DRV425-Q1 automotive device is designed for single-axis magnetic field-sensing applications, and enables electrically-isolated, high-sensitivity, and precise dc- and ac-field measurements. The device provides the unique and proprietary, integrated fluxgate sensor (IFG) with an internal compensation coil to support a high-accuracy sensing range of ±2 mT, with a measurement bandwidth of up to 47 kHz. The low offset, offset drift, and noise of the sensor, combined with the precise gain, low gain drift, and very low nonlinearity provided by the internal compensation coil, result in unrivaled magnetic field measurement precision.This high level of sensitivity and accuracy enables more current measurements in high-current busbar applications, such as traction inverters or battery-management systems. Torque sensor or motor diagnostic systems can benefit from the ability to precisely measure the position or displacement of a magnetic field. The output of the DRV425-Q1 is an analog signal proportional to the sensed magnetic field.

The device offers a complete set of features, including an internal difference amplifier, on-chip precision reference, and diagnostic functions to minimize component count and system-level cost.

The device is available in a thermally-enhanced, nonmagnetic, thin WQFN package, with a thermal pad for optimized heat dissipation, and is specified for operation over the automotive temperature range of –40°C to +125°C.



Download

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 8
Type Title Date
* Data sheet DRV425-Q1 Automotive, Integrated Fluxgate Magnetic-Field Sensor datasheet (Rev. A) PDF | HTML 24 Apr 2020
Functional safety information DRV425-Q1 Functional Safety FIT Rate, Failure Mode Distribution and Pin FMA 23 Mar 2020
E-book Simplifying Current Sensing (Rev. A) 09 Jan 2020
Application note Fluxgate for Motor Diagnostics 21 Dec 2017
White paper Achieve greater precision, reliability with magnetic sensing technology 26 Jun 2017
Application note Design Considerations for Dual DRV425 Bus Bar Application 30 Mar 2017
Application note Bus Bar Theory of Operation 08 Nov 2016
Technical article Get Connected: A new blog series 10 Jan 2014

Design & development

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

Evaluation board

DRV425-BUSBAR-EVM — ±100A Bus Bar Current Sensor using Open-Loop Fluxgate Sensors Reference Design Evaluation Assembly

The DRV425-BUSBAR-EVM is a complete bus bar assembly that is a non-invasive (isolated) current measurement solution up to ±100A.  This assembly includes bus bar with a circular cutout, insert, PCB, isolated standoffs, terminal blocks, and interface cable assembly to enable high current (...)
Not available on TI.com
Evaluation board

DRV425EVM — DRV425 Open Loop Magnetic Field Sensing Evaluation Module

The DRV425EVM is an evaluation platform for the DRV425, a complete analog front end IC and coil driver for open loop magnetic field sensing applications. The DRV425EVM allows the user to explore all the features of the DRV425 device.

User guide: PDF
Not available on TI.com
Calculation tool

DRV425 System Parameter Calculator

SLOC331.ZIP (481 KB)
Simulation tool

DRV425 Bus Bar FEMM Script

SBOC481.ZIP (591 KB)
lock = Requires export approval (1 minute)
Package Pins Download
QFN (RTJ) 20 View options

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos