Clock Jitter Cleaners Keep Phase Noise Down

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The LMK04800 clock jitter cleaners exhibit what may be the industry’s lowest phase noise and rms jitter performance at 111 fs from 12 kHz to 20 MHz with a wideband noise floor of -162 dBc/Hz at a 184-MHz output. The family includes the LMK04808, LMK04806, LMK04805, and LMK04803. Generating frequencies up to 1.5 GHz, features include holdover, switchover, multiple inputs, digital delay, analog delay, odd/even dividers, and 12 programmable output format drivers. Available in 64-pin LLPs, pricing is $9.15 each/1,000. NATIONAL SEMICONDUCTOR CORP., Santa Clara, CA. (800) 272-9959.