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.
기술 자료
| 유형 | 직함 | 날짜 | ||
|---|---|---|---|---|
| * | Data sheet | DRV425 Fluxgate Magnetic-Field Sensor datasheet (Rev. A) | PDF | HTML | 2016/03/10 |
| E-book | An Engineer's Guide to Current Sensing (Rev. B) | 2022/04/12 | ||
| Technical article | Addressing high-voltage current-sensing design challenges in HEV/EVs | PDF | HTML | 2019/11/04 | |
| Technical article | Current sensing in battery management systems | PDF | HTML | 2019/05/30 | |
| Application brief | Fluxgate for Motor Diagnostics | 2017/12/21 | ||
| White paper | Achieve greater precision, reliability with magnetic sensing technology | 2017/06/26 | ||
| Application brief | Design Considerations for Dual DRV425 Bus Bar Application | 2017/03/30 | ||
| Application note | Bus Bar Theory of Operation | 2016/11/08 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
DRV425-BUSBAR-EVM — 개방 루프 플럭스 게이트 센서를 사용한 ±100A 버스 바 전류 센서 레퍼런스 디자인 평가 어셈블리
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| WQFN (RTJ) | 20 | Ultra Librarian |
주문 및 품질
- RoHS
- REACH
- 디바이스 마킹
- 납 마감/볼 재질
- MSL 등급/피크 리플로우
- MTBF/FIT 예측
- 물질 성분
- 인증 요약
- 지속적인 신뢰성 모니터링
- 팹 위치
- 조립 위치
권장 제품에는 본 TI 제품과 관련된 매개 변수, 평가 모듈 또는 레퍼런스 디자인이 있을 수 있습니다.