Electronic Design

Clock Jitter Cleaners Keep Phase Noise Down

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.

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