ACS8946中文资料抖动衰减，乘以锁相环，以保护开关，用于OC-12／STM-4和GBE数据手册Semtech规格书

特性 Features

·Meets rms jitter requirements of:  ·Telcordia GR-253 for OC-3 and OC-12
·ITU-T G.813/G.812 for STM-1 and STM-4 rates
·ETSI EN300-462-7/EN302-084 up to STM-16 rates

·PLL bandwidth and jitter peaking fully adjustable—supports PLL loop bandwidths from 2 kHz for superior input jitter filtering
·Typical jitter generation down to: ·0.3 ps rms for 250 kHz to 5 MHz band for G.813, or EN300 462, at STM-4 (OC-12) rates
·2.8 ps rms for 12 kHz to 20 MHz band (against 4.02 ps rms for GR-253-CORE at OC-48 rate)

·ITU, ETSI and Telcordia frequency band results shows exceptional performance in a “Real World” environment (low PLL bandwidth of 2 KHz and a typical input from an ACS8525 partner IC):  ·0.4 ps rms for 250 kHz to 5 MHz band for G.813, or EN300 462, at STM-4 (OC-12) rates
·2.8 ps rms for 12 kHz to 20 MHz band

·Tracking range ±400 ppm about a wide range of input frequencies
·Manual or automatic control of reference selection
·External feedback option
·LOS alarms for each input, and for selected reference
·3.3 V operation, - 40 to +85°C temperature range
·Small outline leadless 7 mm x 7 mm QFN48 package
·Lead (Pb)-free version available (ACS8946T), RoHS and WEEE compliant