LMP91000EVM/NOPB

The LMP91000EVM/NOPB evaluation module helps designers to evaluate the operation and performance of the LMP91000. The LMP91000 is a programmable analog front end (AFE) for use in micro power electrochemical sensing applications. It provides a complete signal path solution between a sensor and a microcontroller that generates an output voltage proportional to the cell current. The LMP91000s programmability enables it to support multiple electrochemical sensors such as three lead toxic gas sensors and two lead galvanic cell sensors with a single design as opposed to the multiple discrete solutions. The LMP91000 supports gas sensitivities over a range of 0.5nA/ppm to 9500nA/ppm. It also allows for an easy conversion of current ranges from 5µA to 750µA full scale. The LMP91000s adjustable cell bias and trans impedance amplifier gain are programmable through the I2C interface. The I2C interface can also be used for sensor diagnostics.