Ultra low jitter timing modules for synchronous Ethernet

The VFJA432 and VFJA434 integrated timing modules can synchronize an Ethernet physical layer to a telecom network timing reference while generating a 0.18 picosecond jitter Ethernet clock. The modules can synchronize to common telecom frequencies such as 8KHz and 19.44MHz from the backplane or common Ethernet frequencies such as 25 and 125Mhz from the physical layer. The input frequency is selectable from four preset frequencies. Once the timing module synchronizes to the input frequency, the modules can provide dual and quad output frequencies, respectively, from 10 to 200 MHz.

Valpey Fisher Corporation, www.valpeyfisher.com