4 Conclusion

To ensure that the electronic circuits perform as designed, they must be protected from EMI. At the same time, the circuits themselves must not radiate emissions that can threaten or degrade the performance of other equipment. Compliance with EMC standards requires EMI protection at four levels: the component level, board level, system level and overall system level [15].

The techniques presented here minimize EMI at the PCB (board) design level and are easily applicable to a practical example, a best-in-class precision ADC signal chain with reinforced isolation [16] used for electricity metering. With careful design using the proposed EMI reduction techniques, the design achieves sufficient margin [17] for the relevant EMC standards.