Programmable sensing conditioner accommodates various sensing element types

Capable of accommodating various types of sensing element, Mouser now stocks the Texas Instruments (TI) PGA900 programmable resistive sensing conditioner. The PGA900 conditions its input signals by amplification and digitization through two analog front end channels. User programmed software in the on-chip ARM Cortex-M0 processor allows many different functions. It can perform linearization, temperature compensation, and other user defined compensation algorithms. The conditioned signal can be output as ratiometric voltage, absolute voltage, 4- to 20mA current loop or PWM. The data and configuration registers can also be accessed through SPI, I2C, UART, and two GPIO ports. In addition, the device's open web-based interface (OWI) allows communication and configuration through the power supply pin without using additional lines. Applications include pressure sensor transmitters, transducers, liquid-level meters, flow meters, weight scales, load meters, strain gauges, thermocouples, thermistors, 2-wire resistance thermometers (RTDs) and resistive field transmitters.