关键词: 附加抖动, 相位噪声, 时钟缓冲器

Abstract: Additive jitter is a key indicator for clock buffers. The theoretical derivation of the additive jitter calculation formula from the perspective of phase noise is carried out, and the correctness of the additive jitter calculation formula is proved. Through the actual tests of the clock buffers, the derivation of the additive jitter calculation formula is verified from the perspective of actual measurements. Combined with the calculation formula for additive jitter, precautions in the additive jitter test of clock buffers are provided to ensure the accuracy of the test results.

Key words: additive jitter, phase noise, clock buffers