Update of the “Digital EMC project”

 Low noise digital cells have the major drawback of Static power consumption, not tolerable for large digital system.  A Low Noise Power Supply Techniques

 The reduction in variance of unintentional jitter is key to the delay cell array technique being able to achieve greater reduction in EMI.. MICAS Department of Electrical

 Current source ensures the major di/dt reduction,.  Process variation sensitivity also becomes better due to the dominance of

Setup-1: Directly 3.3 V supply Setup-2: Series Regulator. Setup-3: EMI-Suppressing Reg +

Slide 2 AID-EMC review meeting 29/08/2006 CONFIDENTIAL.. AID-EMC review meeting

 The smaller R The smaller R eq eq , the lower 3-dB frequency and the higher , the lower 3-dB frequency and the higher current peak the EMI-Suppressing Regulator can

Comparison of internal and external clock on Current Current Spectrum of VDD2

Bush, D.R., ” Spread spectrum clock generation for the reduction of radiated emissions”, IEEE International Symposium on Electromagnetic Compatibility, 1994, pp 227-231..