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| SI5347_16 Datasheet, PDF (1/55 Pages) Silicon Laboratories – Dual/Quad DSPLL Any-Frequency, Any-Output Jitter Attenuators | |||
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Si5347/46 Rev D Data Sheet
Dual/Quad DSPLL⢠Any-Frequency, Any-Output Jitter
Attenuators
The Si5347 is a high-performance, jitter-attenuating clock multiplier which integrates
four any-frequency DSPLLs for applications that require maximum integration and inde-
pendent timing paths. The Si5346 is a dual DSPLL version in a smaller package. Each
DSPLL has access to any of the four inputs and can provide low jitter clocks on any of
the device outputs. Based on 4th generation DSPLL technology, these devices provide
any-frequency conversion with typical jitter performance under 100 fs. Each DSPLL
supports independent free-run, holdover modes of operation, as well as automatic and
hitless input clock switching. The Si5347/46 is programmable via a serial interface with
in-circuit programmable non-volatile memory so that it always powers up in a known
configuration. Programming the Si5347/46 is easy with Silicon Labs' ClockBuilder Pro
software. Factory pre-programmed devices are also available.
Applications
⢠OTN Muxponders and Transponders
⢠10/40/100G network line cards
⢠GbE/10 GbE/100 GbE Synchronous Ethernet (ITU-T G.8262)
⢠Carrier Ethernet switches
⢠Broadcast video
KEY FEATURES
⢠Four or two independent DSPLLs, any
output frequency from any input frequency
⢠Ultra-low jitter of 95 fs rms
⢠Input frequency range:
⢠External Crystal: 25â54 MHz
⢠Differential: 8 kHz to 750 MHz
⢠LVCMOS: 8 kHz to 250 MHz
⢠Output frequency range:
⢠Differential: up to 712.5 MHz
⢠LVCMOS: up to 250 MHz
⢠Status Monitoring
⢠Hitless switching
⢠Si5347: 4 input, 8 output, 64-QFN 9Ã9 mm
⢠Si5346: 4 input, 4 output, 44-QFN 7Ã7 mm
25-54 MHz XTAL
XA
XB
OSC
IN0
4 Input IN1
Clocks IN2
IN3
÷FRAC
÷FRAC
÷FRAC
÷FRAC
DSPLL A
DSPLL B
DSPLL C
DSPLL D
Status Flags
I2C / SPI
Status Monitor
Control
NVM
÷INT
÷INT
÷INT
÷INT
÷INT
÷INT
÷INT
÷INT
OUT0
OUT1
OUT2
OUT3
OUT4
OUT5
OUT6
OUT7
silabs.com | Smart. Connected. Energy-friendly.
Rev. 1.0
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