SLAA705A July 2016 – November 2019 MSP430FR2310 , MSP430FR2311
In sensing applications, operational amplifiers are often needed to condition (for example, to amplify and filter) the analog sensor output so that it can be properly sampled by the analog-to-digital converter (ADC) on the microcontroller (MCU). This application report provides a guide to set up the integrated operational amplifiers (TIA and SAC_OA) on the MSP430FR2311 MCU. Examples are provided for using the integrated operational amplifiers as a transimpedance amplifier for current sensing applications. Considerations for low-power operation are also discussed.