Semtech ACS8522A
SETS LITE Synchronous Equipment Timing Source for Stratum 3/4E/4 and SMC Systems
The ACS8522A is a highly integrated, single-chip solution for the Synchronous Equipment Timing Source (SETS) function in a SONET or SDH Network Element.
Features
- Suitable for Stratum 3, 4E, 4 and SONET Minimum Clock (SMC) or SONET/SDH Equipment Clock (SEC)applications (to Telcordia 1244-CORE[19] Stratum 3 and GR-253[17], and ITU-T G.813[11] Options Ι and ΙΙ specifications).
- Accepts four individual input reference clocks, all with robust input clock source quality monitoring.
- Simultaneously generates four output clocks, plus two Sync pulse outputs.
- Absolute Holdover accuracy better than 3 x 10-10 (manual), 7.5 x 10-14 (instantaneous); Holdover stability defined by choice of external XO.
- Programmable PLL bandwidth, for wander and jitter tracking/attenuation, 0.1 Hz to 70 Hz in 10 steps.
- Automatic hit-less source switchover on loss of input
- Serial SPI compatible interface.
- Output phase adjustment in 6 ps steps up to ±200 ns
- IEEE 1149.1[5] JTAG Boundary Scan.
- Available in LQFP 64-pin package.
- Single 3.3 V operation.
- Lead (Pb)-free version available (ACS8522AT), RoHS and WEEE compliant.
Order Codes
- ACS8522 A: NCNR, 160 per tray, ok to order partial tray quantities
- ACS8522AT: Lead-free, RoHS and WEEE compliant, NCNR, 160 per tray, ok to order partial tray quantities
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