DRV411
- Optimized for Symmetric Hall-Elements
(for example, AKM HW-322, HW-302, or similar) - Spinning Current Hall Sensor Excitation
- Elimination of Hall Sensor Offset and Drift
- Elimination of 1/f Noise
- Extended Current Measurement Range
- H-Bridge Drive Capability: 250 mA
- Precision Difference Amplifier:
- Offset and Drift: 100 µV (max), 2 µV/°C (max)
- System Bandwidth: 200 kHz
- Precision Reference:
- Accuracy: 0.2% (max)
- Drift: 50 ppm/°C (max)
- Pin-Selectable for 2.5 V, 1.65 V, and Ratiometric Mode
- Overrange and Error Flags
- Supply: 2.7 V to 5.5 V
- Packages: 4-mm × 4-mm QFN and TSSOP-20 PowerPAD™
- Temperature Range: –40°C to +125°C
The DRV411 is designed to condition InSb Hall elements for use in closed-loop current-sensor modules. The DRV411 provides precision excitation circuitry for the Hall-element effectively eliminating the offset and offset-drift of the Hall element. This device also provides a 250-mA H-bridge for driving the sensor compensation coil as well a precision differential amplifier to generate the output signal. The 250-mA drive capability of the H-bridge roughly doubles the current measurement range compared to conventional single-ended drive methods.
The Hall sensor front-end circuit and the differential amplifier employ proprietary offset cancelling techniques. These techniques, along with a high-accuracy voltage reference, significantly improve the accuracy of the overall current-sensor module. The output voltage is pin-selectable to support a 2.5-V output for use with a 5-V power supply, as well as 1.65-V for 3.3-V sensors.
For optimum heat dissipation, the DRV411 is available in thermally enhanced 4-mm × 4-mm QFN and TSSOP-20 with PowerPAD packages. The DRV411 is specified for operation over the full extended industrial temperature range of –40°C to +125°C.
기술 문서
| 유형 | 직함 | 날짜 | ||
|---|---|---|---|---|
| * | Data sheet | Sensor Signal Conditioning IC for Closed-Loop Magnetic Current Sensors datasheet (Rev. B) | 2013/12/12 | |
| White paper | Achieve greater precision, reliability with magnetic sensing technology | 2017/06/26 | ||
| Application note | Design Considerations for the DRV411 | 2015/02/26 | ||
| EVM User's guide | DRV411EVM User's Guide (Rev. A) | 2013/11/27 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
DRV411EVM — 폐쇄형 루프 자기 전류 센서를 위한 센서 신호 컨디셔닝 IC용 평가 모듈
The DRV411EVM is an evaluation platform for the DRV411, a sensor signal conditioning integrated circuit for closed loop magnetic current sensors. The DRV411EVM allows evaluation of all aspects of the DRV411 device when connected to a user supplied hall sensor and coil. Complete schematics and a (...)
TIPD184 — 양극 공급 장치를 사용한 100A 폐쇄 루프 전류 센서 레퍼런스 디자인
TIPD180 — 폐쇄형 루프 보정 홀 요소를 사용하는 ±50A 전류 센서 레퍼런스 디자인
| 패키지 | 핀 | 다운로드 |
|---|---|---|
| HTSSOP (PWP) | 20 | 옵션 보기 |
| VQFN (RGP) | 20 | 옵션 보기 |
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.