LMP91002 - 用于低功耗 H2S 和 CO 遥感应用的可配置 AFE

LMP91002是TI德州仪器公司的一款无产品，LMP91002是用于低功耗 H2S 和 CO 遥感应用的可配置 AFE，本站介绍了LMP91002的封装应用图解、特点和优点、功能等，并给出了与LMP91002相关的TI元器件型号供参考。

LMP91002 - 用于低功耗 H2S 和 CO 遥感应用的可配置 AFE - 无 - 气体/化学感应 - 德州仪器

产品特性

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

产品应用

Gas Detectors
Amperometric Applications
Electrochemical Blood Glucose Meters

产品说明

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.

产品器件信息

PART NUMBER	PACKAGE	BODY SIZE (NOM)
LMP91002	WSON (14)	4.00 mm × 4.00 mm

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