Si5347/46 Rev D Data Sheet
™
Dual/Quad DSPLL Any-Frequency, Any-Output Jitter Attenua-
KEY FEATURES
tors
• Four or two independent DSPLLs, any
output frequency from any input frequency
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 Skyworks' ClockBuilder Pro™
software. Factory preprogrammed devices are also available.
• Ultra-low jitter of 95 fs rms
• Input frequency range:
• External Crystal: 25–54 MHz
• Differential: 8 kHz to 750 MHz
• LVCMOS: 8 kHz to 250 MHz
• Output frequency range:
• Differential: 100 Hz to 720 MHz
• LVCMOS: 100 Hz to 250 MHz
• Status Monitoring
• Hitless switching
• Si5347: 4 input, 8 output, 64-QFN 9×9 mm
• Si5346: 4 input, 4 output, 44-QFN 7×7 mm
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
25-54 MHz XTAL
XA
XB
OSC
÷INT
OUT0
OUT1
OUT2
OUT3
÷INT
÷INT
÷INT
÷INT
DSPLL A
DSPLL B
÷FRAC
÷FRAC
IN0
IN1
IN2
IN3
4 Input
Clocks
OUT4
OUT5
OUT6
OUT7
÷FRAC
÷FRAC
DSPLL C
DSPLL D
÷INT
÷INT
÷INT
Status Flags
I2C / SPI
Status Monitor
Control
NVM
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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Rev. 1.1 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • November 30, 2021
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