AD9545
FEATURES
Dual DPLL synchronizes 1 Hz to 750 MHz physical layer clocks, providing frequency translation with jitter cleaning of noisy references plies with ITU-T G.8262 and Telcordia GR-253 Supports Telcordia GR-1244, ITU-T G.812, ITU-T G.813,
ITU-T G.823, ITU-T G.824, ITU-T G.825, and ITU-T G.8273.2 Continuous frequency monitoring and reference validation for frequency deviation as low as 50 ppb (5 × 10- 8) Both DPLLs feature a 24-bit fractional divider with 24-bit programmable modulus Programmable digital loop filter bandwidth: 10- 4 Hz to 1850 Hz 2 independent, programmable auxiliary NCOs (1 Hz to
65,535 Hz, resolution < 1.37 × 10- 12 Hz), suitable for IEEE 1588 Version 2 servo feedback in PTP applications Automatic and manual holdover and reference switchover, providing zero delay, hitless, or phase buildout operation Programmable priority-based reference switching with manual, automatic revertive, and automatic nonrevertive modes supported 5 pairs of clock output pins with each pair...
