SLAA638A august 2014 – may 2023 MSP430I2040 , MSP430I2041
In the design of a metering circuit, a key success factor is to yield sufficient accuracy and is dependant on a good sampling circuit. The 24 bits Sigma-delta AD Converter (SD24) on the MSP430i2040, together with the on-chip programmable gain amplifier provides the critical hardware for getting high quality AD conversion results from both current and voltage sensor. Moreover, the interface circuit, the component selection and the circuit layout also plays a crucial role for a successful design.