The MSP430 is a ubiquitous mixed-signal microcontroller family from Texas Instruments. Built around a 16-bit CPU, the MSP430 is designed for low cost and, specifically, low power consumption embedded applications. 

In the world of chemical and biochemical sensors when the signal type is DC as apposed to AC then the MSP430 is an appropriate processor, as biological signals are often  on the second to tens of seconds time line.