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Video Timing Solutions
SOLUTIONS GUIDE
ANY-RATE
FREQUENCY SYNTHESIS
IN A SINGLE IC
FEATURES
• Generates any frequency from 2 kHz to
945 MHz and select frequencies to 1.4 GHz
from an input frequency of 2 kHz to 710 MHz
• Ultra-low jitter 0.58 ps RMS, 5 ps pk-pk at
3G-SDI (10 Hz to 20 MHz)
• Digitally programmable loop bandwidth with
fastlock (4 Hz to 525 Hz)
• Meets 3G-SDI (SMPTE 424M) for timing and
alignment jitter limits
• Genlock, free-run, and digital hold
• Hitless switching between input clocks with
phase build-out
• Manual or automatic (revertive, non-
revertive) input clock selection
• LOL, LOS and FOS alarm outputs
• Configurable signal format per output
(LVPECL, LVDS, CML, CMOS)
• I²C/SPI programmable
• Single supply 1.8, 2.5 or 3.3 V ±10%
with high PSNR
• Pb-free, RoHS compliant
APPLICATIONS
• Video or audio genlock and synchronization
• FPGA SDI SerDes recovered clock generation
• Triple rate 3G/HD/SD-SDI SerDes
• Video capture, conversion, editing and
distribution
• Digital audio or video recording and
playback devices
• Video server
• Video format converter
• Video switcher and frame synchronizer
FULLY INTEGRATED,
FREQUENCY FLEXIBLE GENLOCK SOLUTION
DESCRIPTION
Silicon Laboratories’ Si5324 Any-Rate Precision Clock is the industry’s lowest jitter, most
highly integrated video clock IC optimized for genlock applications. Based on Silicon Labs’
patented DSPLL® technology, the Si5324 has a fully integrated, digitally programmable
loop filter that supports loop bandwidths ranging from 4 Hz to 525 Hz as well as a low
phase noise internal VCO. By consuming less than 10% of the overall 3G-SDI jitter budget
required in next generation video applications, the Si5324 simplifies design and eases
system-level SDI jitter testing. In addition, the Si5324 provides any-rate frequency
flexibility by generating virtually any output frequency from 2 kHz to 1.4 GHz from any
input frequency ranging from 2 kHz to 710 MHz enabling a single IC design for multi-rate
video applications.
3G/SD/
HD-SDI
Cable
Equalizer
Cable
Equalizer
SDI
Deserializer
SDI
Deserializer
Video
Processor/
Buffer
Pclk, hvf
YCbCr
Pclk, hvf
YCbCr
YCbCr
Cable Driver
Sample Clock
HSYNC
Sync Input
Master Sync Generator
SDI
Reclocker
SDI
Reclocker
Genlock
SDI
Serializer
Si5338
Clock
Generator
HD (74.25 MHz)
HD (74.1758 MHz)
Audio (24.576 MHz)
Processor (66.66 MHz)
3G-SDI Reference Clock
Si5324
Any-Rate
Clock
Sync
Separator
Si554
VCXO
Si554
VCXO
Si590
XO
3G/SD/
HD-SDI
3G/SD/
HD-SDI
Application Example: Production Video Switcher