Firekanals clock translator med høj grad af fleksibilitet
Analog Devices præsenterer firekanals clock translator med avancerede features til bl.a. jitter cleanup (in english).
Analog Devices has introduced the AD9554 multi-service adaptive quad-channel clock translator with clock multiplier, which provides jitter cleanup and synchronization for many systems, including synchronous optical networks (SONET/SDH).Its embedded cross-point switch at the input provides greater flexibility and lower cost of ownership than maintaining different clocking configurations of multiple parts. The AD9554 dissipates only 940 mW of power while generating up to eight output clocks over an output range of 430 kHz to 941 MHz, synchronized to four 2-kHz to 1-GHz external input references, with a loop bandwidth as low as 0.1 Hz.
The four analog-digital phase-locked loops (ADPLLs) enable the reduction of input jitter or phase noise associated with the external references. The digitally controlled loop and holdover circuitry of the AD9554 continuously generates a low jitter output clock even when all reference inputs have failed. The AD9554 has adaptive clocking capability that allows the user to dynamically change the DPLL divide ratios while they are locked.
http://www.analog.com/AD9554
