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.
| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | LMP91002 Sensor AFE System: Configurable AFE Potentiostat for Low-Power Chemical Sensing Applications datasheet (Rev. B) | PDF | HTML | Oct 29, 2015 |
| User guide | SPIO-4 Precision Signal-Path Controller Board User Guide (Rev. A) | May 5, 2018 | ||
| Application note | AN-2230 MSP430 Interface to LMP91000 Code Library (Rev. C) | May 1, 2013 | ||
| More literature | Sensor Analog Front Ends Brochure | Oct 30, 2012 |
For additional terms or required resources, click any title below to view the detail page where available.
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, (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| WSON (NHL) | 14 | Ultra Librarian |
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