SI5351 Datasheet, PDF (1/2 Pages) List of Unclassifed Manufacturers – Factory-Programmable Any-Frequency CMOS Clock Generator

Si5350/51
Factory-Programmable Any-Frequency CMOS Clock Generator
Description
The Si5350/51 are highly flexible, programmable clock
generators that can be customized to generate up to
eight independent non-integer-related frequencies. The
device has eight CMOS clock outputs offered in a space
saving 4 mm x 4 mm 20-QFN and a 24-QSOP package,
or three clock outputs 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 8 kHz to 133 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 outputs supports 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
- 8 kHz to 133 MHz
- Exact clock synthesis: 0 ppm error
- Similar frequency flexibility as 8 independent PLLs
- Accepts crystal or external reference clock
- <100 ps period jitter for any configuration
- Glichless 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
- Factory and field-programmable versions
- Two week sample lead time for any custom clock
- Small size: 4 mm x 4 mm 20-QFN, 24-QSOP 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, 24-QSOP
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 © 2010 by Silicon Laboratories
10.20.10