SI5350 Datasheet, PDF (1/2 Pages) Silicon Laboratories – Factory-Programmable Any-Frequency CMOS Clock Generator

Si5350/51-B
Factory-Programmable Any-Frequency CMOS Clock Generator
Description
The Si5350/51 family of highly flexible, programmable
clock generators can be customized to generate up to
eight independent non-integer-related frequencies. The
devices have eight CMOS clock outputs offered in a
space saving 4x4 mm 20-QFN or lower cost three clock
output versions offered in a 10-MSOP package. Each
output has an independent MultiSynth™ fractional
divider that accepts a high-frequency reference from
one of the device’s internal PLLs and accurately divides
down the clock to generate unique, non-integer-related
frequencies from 2.5 kHz to 200 MHz. Any combination
of output frequencies can be generated by the device.
All clocks are generated with 0 ppm frequency
synthesis error, enabling the replacement of XOs and
PLL-based clocks while simplifying design and
minimizing cost. As an added feature, the Si5350/51
features an integrated VCXO which eliminates the need
for pullable crystals. The Si5350 features configurable
control pin options allowing the direct pin control of
frequency select, output enable, spread spectrum
enable and powerdown. Each output supports 1.8, 2.5,
or 3.3 V operation, eliminating the need for external
level translators in mixed-supply applications.
Features
- Generates any frequency on any output
- 2.5 kHz to 200 MHz
- Exact clock synthesis: 0 ppm error
- Similar frequency flexibility as 8 independent PLLs
- Accepts crystal or external reference clock
- < 70 ps typical period jitter for any configuration
- Glitchless switching between output frequencies
- Integrated VCXO eliminates need for pullable 
crystal
- Si5350 (pin) and Si5351 (I²C) versions
- User-definable control pins:
- Frequency select, output enable, spread spectrum
enable, powerdown
- Spread spectrum clock generation
- –0.1 to –2.5% down, ±0.1 to ±1.5% center
- Two week sample lead time for any custom clock
- Small size: 4x4 mm 20-QFN and 10-MSOP
- Industrial temperature range: –40 to +85
Applications
- HDTV, DVD/Blu-ray, set-top box
- Audio/video equipment, gaming
- Printers, scanners, projectors
- Audio DAC/CODEC
- USB Audio
- Residential gateways
- Networking/communication
- Servers, storage
10-MSOP
VDD
XA
PLL
OSC
A
XB
PLL
B
P0
Control
P1
Logic
GND
VDDO
MultiSynth
0
R0
MultiSynth
1
R1
MultiSynth
2
R2
CLK0
CLK1
CLK2
VDD
XA
PLL
OSC
A
XB
PLL
B
P0
P1
P2
Control
Logic
P3
P4
GND
20-QFN
MultiSynth
0
R0
MultiSynth
1
R1
MultiSynth
2
R2
MultiSynth
3
R3
MultiSynth
4
R4
MultiSynth
5
R5
MultiSynth
6
R6
MultiSynth
7
R7
VDDOA
CLK0
CLK1
VDDOB
CLK2
CLK3
VDDOC
CLK4
CLK5
VDDOD
CLK6
CLK7
Copyright © 2015 by Silicon Laboratories
7.15.15