Hi George, Yes, Configure SAC-L1 for Unity-Gain Buffer Mode. Send SMT microphone output into OA0+, connected OA0- with OA0O from external, then output the buffered signal from OA0O to filter. There is an example code in MSP430Ware showing how to set up the resigter for this application. msp430fr231x_SAC_L1_02.c SAC0, Unity-Gain Buffer Mode Regards KC
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