DRV425
- High-precision, integrated fluxgate sensor:
- Offset: ±8µT (max)
- Offset drift: ±5nT/°C (typ)
- Gain error: 0.04% (typ)
- Gain drift: ±7ppm/°C (typ)
- Linearity: ±0.1%
- Noise: 1.5nT/√ Hz (typ)
- Sensor range: ±2mT (max)
- Range and gain adjustable with external resistor
- Selectable bandwidth: 47kHz or 32kHz
- Precision reference:
- Accuracy: 2% (max), drift: 50ppm/°C (max)
- Pin-selectable voltage: 2.5V or 1.65V
- Selectable ratiometric mode: VDD / 2
- Diagnostic features: Overrange and error flags
- Supply voltage range: 3.0V to 5.5V
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 ±2mT, with a measurement bandwidth of up to 47kHz. 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 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 industrial temperature range of –40°C to +125°C.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | DRV425 Fluxgate Magnetic-Field Sensor datasheet (Rev. B) | PDF | HTML | 2025年 10月 13日 |
| E-book | An Engineer's Guide to Current Sensing (Rev. B) | 2022年 4月 12日 | ||
| Technical article | Addressing high-voltage current-sensing design challenges in HEV/EVs | PDF | HTML | 2019年 11月 4日 | |
| Technical article | Current sensing in battery management systems | PDF | HTML | 2019年 5月 30日 | |
| Application brief | Fluxgate for Motor Diagnostics | 2017年 12月 21日 | ||
| White paper | Achieve greater precision, reliability with magnetic sensing technology | 2017年 6月 26日 | ||
| Application brief | Design Considerations for Dual DRV425 Bus Bar Application | 2017年 3月 30日 | ||
| Application note | Bus Bar Theory of Operation | 2016年 11月 8日 |
設計與開發
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DRV425-BUSBAR-EVM — 使用開迴路通量閘感測器的 ±100A 匯流條電流感測器參考設計評估組件
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| WQFN (RTJ) | 20 | Ultra Librarian |
訂購與品質
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 認證摘要
- 進行中持續性的可靠性監測
- 晶圓廠位置
- 組裝地點
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。