DRV425
Vollständig integrierter magnetischer Fluxgate-Sensor-IC für Anwendungen mit geschlossenem Regelk
DRV425
- 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.
Technische Dokumentation
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.
DRV425-BUSBAR-EVM — ±100 A-Sammelschienenstromsensor mit Open-Loop-Fluxgate-Sensoren – Referenzdesign – Bewertung der Mo
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.
SLOC331 — DRV425 System Parameter Calculator
Unterstützte Produkte und Hardware
Produkte
Signalumformer
Hardware-Entwicklung
Evaluierungsplatine
SBOC481 — DRV425 Bus Bar FEMM Script
TIPD205 — plusmn;100-A-Sammelschienenstromsensor mit Open-Loop-Fluxgate-Sensoren – Referenzdesign
Gehäuse | Pins | CAD-Symbole, Footprints und 3D-Modelle |
---|---|---|
WQFN (RTJ) | 20 | Ultra Librarian |
Bestellen & Qualität
- RoHS
- REACH
- Bausteinkennzeichnung
- Blei-Finish/Ball-Material
- MSL-Rating / Spitzenrückfluss
- MTBF-/FIT-Schätzungen
- Materialinhalt
- Qualifikationszusammenfassung
- Kontinuierliches Zuverlässigkeitsmonitoring
- Werksstandort
- Montagestandort
Empfohlene Produkte können Parameter, Evaluierungsmodule oder Referenzdesigns zu diesem TI-Produkt beinhalten.
Support und Schulungen
TI E2E™-Foren mit technischem Support von TI-Ingenieuren
Inhalte werden ohne Gewähr von TI und der Community bereitgestellt. Sie stellen keine Spezifikationen von TI dar. Siehe Nutzungsbedingungen.
Bei Fragen zu den Themen Qualität, Gehäuse oder Bestellung von TI-Produkten siehe TI-Support.