Insights on RC Filter Design for SPI Communication

Insights on RC Filter Design for SPI Communication

Introduction In some EMI testing items (such as RE), there may be cases where radiation exceeds standards due to SPI communication. A common solution is to add an RC filter to the SPI communication loop, which can attenuate high-frequency noise to improve radiation levels. However, adding an RC filter can affect the signal quality of … Read more

An Unsuccessful Isolated DAC Design

An Unsuccessful Isolated DAC Design

A design is needed for an isolated circuit that outputs a variable voltage of 0~12V, with the isolated side powered by 12V. There are no specific speed requirements for the output voltage. The accuracy is not particularly critical, as it just needs to stabilize once set. The design uses an optocoupler driven by the PWM … Read more