●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.
● 2.7V to 5.25V supply voltage
● LMP91000 gas sensor AFE and ADC161S626 16bit converter
● Supports three lead electrochemical cells and two lead galvanic cell in potentiostat configuration
● Cell conditioning current up to 10mA
● Output drive current 750µA
● Complete potentiostat circuit to interface to most chemical cells
● Programmable cell bias voltage
● Low bias voltage drift
● I2C compatible digital interface
● Low bias voltage drift
●The SPIO4 communication board is a data capture board, required when the LMP91000 is used in the sensor AFE evaluation platform (LMP91000EVM) and must be ordered separately.
