AD9543
AD9543 is Dual DPLL/IEEE 1588 Synchronizer and Jitter Cleaner manufactured by Analog Devices.
FEATURES
Dual DPLL synchronizes 2 k 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, G.813, G.823,
G.824, G.825, and G.8273.2 Continuous frequency monitoring and reference validation for frequency deviation as low as 50 ppb Both DPLLs feature a 24-bit fractional divider with 24-bit programmable modulus Programmable digital loop filter bandwidth: 10- 4 Hz to 1850 Hz Two independent, programmable auxiliary NCOs (1 Hz to
65,535 Hz, resolution < 1.4 × 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...
