LMP91000 Evaluation Board User Guide, introduces the use of the LMP91000 evaluation board, including the connection of gas sensors, jumpers, power supply, voltage reference, LMP91000 configuration, evaluation board connection and other contents.
This manual describes how to use the LMP91000SDEVAL evaluation board either as a standalone device or as part of a sensor‑front‑end evaluation platform. It explains jumper settings, power connections, I2C interface details and how to connect 3‑electrode or 2‑electrode gas sensors.
The document also provides wiring diagrams for linking the board with ADC161S626BEB and SPIO4 boards, lists the required components, and includes safety and legal notices from National Semiconductor. This manual is written in Chinese.
| VREF voltage range | 1.5 V ≤ VREF ≤ VDD |
|---|---|
| I2C pull‑up resistor | 10 kΩ |
| Supported sensor types | 3‑electrode electrochemical cells and 2‑electrode reference cells |
The LMP91000 is configured via the I2C interface by writing to its registers according to the timing information and register addresses in the LMP91000 datasheet.
The board supports 3‑electrode electrochemical gas cells and 2‑electrode reference cells.
A 10 kΩ pull‑up resistor is provided on the I2C bus.