LMP91002
- Typical Values, TA = 25°C
- Supply Voltage 2.7 V to 3.6 V
- Supply Current (Average Over Time) < 10 µA
- Cell Conditioning Current Up to 10 mA
- Reference Electrode Bias Current (85°C) 900-pA
(Maximum) - Output Drive Current 750 µA
- Complete Potentiostat Circuit to Interface to Most
Not Biased Gas Sensors - Low Bias Voltage Drift
- Programmable TIA Gain 2.75 kΩ to 350 kΩ
- I2C-Compatible Digital Interface
- Ambient Operating Temperature –40°C to 85°C
- Package 14-pin WSON
- Supported by Webench Sensor AFE Designer
The LMP91002 device is a programmable Analog Front End (AFE) for use in micro-power electrochemical-sensing applications. It provides a complete signal path solution between a not biased gas sensor and a microcontroller generating an output voltage proportional to the cell current.
The LMP91002’s programmability enables it support not biased electro-chemical gas sensor with a single design. The LMP91002 supports gas sensitivities over a range of 0.5 nA/ppm to 9500 nA/ppm. It also allows for an easy conversion of current ranges from 5 µA to 750 µA full scale. The LMP91002’s transimpedance amplifier (TIA) gain is programmable through the I2C interface. The I2C interface can also be used for sensor diagnostics. The LMP91002 is optimized for micro-power applications and operates over a voltage range of 2.7 V to 3.6 V. The total current consumption can be less than 10 µA. Further power savings are possible by switching off the TIA amplifier and shorting the reference electrode to the working electrode with an internal switch.
기술 자료
| 유형 | 직함 | 날짜 | ||
|---|---|---|---|---|
| * | Data sheet | LMP91002 Sensor AFE System: Configurable AFE Potentiostat for Low-Power Chemical Sensing Applications datasheet (Rev. B) | PDF | HTML | 2015/10/29 |
| User guide | SPIO-4 Precision Signal-Path Controller Board User Guide (Rev. A) | 2018/05/05 | ||
| Application note | AN-2230 MSP430 Interface to LMP91000 Code Library (Rev. C) | 2013/05/01 | ||
| More literature | Sensor Analog Front Ends Brochure | 2012/10/30 | ||
| EVM User's guide | LMP91000EVM User's Guide (Rev. A) | 2012/06/22 |
설계 및 개발
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LMP91000EVM — LMP91000 평가 모듈
The Texas Instruments LMP91000EVM evaluation module (EVM) helps designers evaluate the operation and performance of the LMP91000 Sensor Analog Front End for Electrochemical sensor. The LMP91000EVM is part of the Sensor AFE evaluation platform.
The SPIO4 communication board is a data capture board, (...)
LMP9XXXXSENSORDEV-SW — LMP91000 Sensor AFE Software Download
지원되는 제품 및 하드웨어
제품
신호 조절기
정밀 ADC
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| WSON (NHL) | 14 | 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