Integrated Device Technology Jitter Attenuator & Femtoclock NG Multiplier 810N252CKI-02LF

The 810N252I -02 device uses IDT ’s fourth generation FemtoClock® NG technology for optimal high clock frequency and low phase noise performance, combined with a low power consumption and high power supply noise rejection. The 810N252I -02 is a PLL based synchronous multiplier that is optimized for PDH or SONET to Ethernet clock jitter attenuation and frequency translation. The 810N252I -02 contains two internal frequency multiplication stages that are cascaded in series. The first stage is a jitter attenuator, capable of jitter attenuation down to 10Hz using the external loop filter. The second stage is a FemtoClock NG ® frequency multiplier that provides the low jitter, high frequency Ethernet output clock that easily meets Gigabit and 10 Gigabit Ethernet jitter requirements. Pre-divider and output divider multiplication ratios are selected using device selection control pins. The multiplication ratios are optimized to support most common clock rates used in PDH , SONET and Ethernet applications. The device requires the use of an external, inexpensive fundamental mode 27MHz crystal. The device is packaged in a space-saving 32- VFQFN package and supports industrial temperature range.