Produktdetails

Number of input channels 1 Features Magnetic Field Sensor Operating temperature range (°C) -40 to 125 Vs (min) (V) 3 Vs (max) (V) 5.5 Interface type Analog voltage Rating Catalog
Number of input channels 1 Features Magnetic Field Sensor Operating temperature range (°C) -40 to 125 Vs (min) (V) 3 Vs (max) (V) 5.5 Interface type Analog voltage Rating Catalog
WQFN (RTJ) 20 16 mm² 4 x 4
  • 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
  • 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 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. The output of the DRV425 is an analog signal proportional to the sensed magnetic field.

The DRV425 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 DRV425 is available in a thermally-enhanced, non-magnetic, thin WQFN package with a PowerPAD™ for optimized heat dissipation, and is specified for operation over the extended industrial temperature range of –40°C to +125°C.

The DRV425 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. The output of the DRV425 is an analog signal proportional to the sensed magnetic field.

The DRV425 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 DRV425 is available in a thermally-enhanced, non-magnetic, thin WQFN package with a PowerPAD™ for optimized heat dissipation, and is specified for operation over the extended industrial temperature range of –40°C to +125°C.

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Technische Dokumentation

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Typ Titel Datum
* Data sheet DRV425 Fluxgate Magnetic-Field Sensor datasheet (Rev. A) PDF | HTML 10 Mär 2016
E-book An Engineer's Guide to Current Sensing (Rev. B) 12 Apr 2022
Technical article Addressing high-voltage current-sensing design challenges in HEV/EVs PDF | HTML 04 Nov 2019
Technical article Current sensing in battery management systems PDF | HTML 30 Mai 2019
Application brief Fluxgate for Motor Diagnostics 21 Dez 2017
White paper Achieve greater precision, reliability with magnetic sensing technology 26 Jun 2017
Application brief Design Considerations for Dual DRV425 Bus Bar Application 30 Mär 2017
Application note Bus Bar Theory of Operation 08 Nov 2016

Design und Entwicklung

Weitere Bedingungen oder erforderliche Ressourcen enthält gegebenenfalls die Detailseite, die Sie durch Klicken auf einen der unten stehenden Titel erreichen.

Evaluierungsplatine

DRV425-BUSBAR-EVM — ±100 A-Sammelschienenstromsensor mit Open-Loop-Fluxgate-Sensoren – Referenzdesign – Bewertung der Mo

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 (...)
Evaluierungsplatine

DRV425EVM — DRV425 Magnetfeldmessung mit offenem Regelkreis – Evaluierungsmodul

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.

Benutzerhandbuch: PDF
Berechnungstool

SBOC480 DRV425 Bus Bar Application Magnetic Field Calculator

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Berechnungstool

SLOC331 DRV425 System Parameter Calculator

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Hardware-Entwicklung
Evaluierungsplatine
DRV425EVM DRV425 Magnetfeldmessung mit offenem Regelkreis – Evaluierungsmodul
Simulationstool

SBOC481 DRV425 Bus Bar FEMM Script

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Referenzdesigns

TIPD205 — plusmn;100-A-Sammelschienenstromsensor mit Open-Loop-Fluxgate-Sensoren – Referenzdesign

This single-supply open loop current sensing solution to accurately measure dc, ac and pulsed currents. Allows highly accurate current measurements up to 110 A
Design guide: PDF
Schaltplan: PDF
Gehäuse Pins CAD-Symbole, Footprints und 3D-Modelle
WQFN (RTJ) 20 Ultra Librarian

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