Design Support

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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 on the MCU. This application report provides a guide to set up the integrated operational amplifiers (TIA and SAC_OA) on the MSP430FR2311 microcontroller. 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.