Si5350B-A-GT [ETC]
Factory-Programmable Any-Frequency CMOS Clock Generator;
| 型号： | Si5350B-A-GT |
| 厂家： | 
ETC |
| 描述： | Factory-Programmable Any-Frequency CMOS Clock Generator |
| 文件： | 总2页 (文件大小：45K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Si5350/51
Factory-Programmable Any-Frequency CMOS Clock Generator
Description
Features
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.
- 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
2
- Si5350 (pin) and Si5351 (I C) 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
VDD
20-QFN, 24-QSOP
VDDOA
MultiSynth
R0
R1
R2
R3
R4
R5
R6
R7
XA
XB
PLL
A
CLK0
CLK1
0
VDDO
OSC
VDD
10-MSOP
MultiSynth
1
VDDOB
CLK2
MultiSynth
2
PLL
B
MultiSynth
0
XA
XB
PLL
R0
R1
R2
CLK0
CLK1
OSC
A
MultiSynth
3
CLK3
VDDOC
CLK4
MultiSynth
1
MultiSynth
4
PLL
B
P0
P1
P2
P3
P4
MultiSynth
5
CLK5
P0
P1
Control
Logic
Control
Logic
MultiSynth
2
CLK2
VDDOD
CLK6
MultiSynth
6
CLK7
MultiSynth
7
GND
GND
Copyright © 2010 by Silicon Laboratories
10.20.10
Si5350/51
Factory-Programmable Any-Frequency CMOS Clock Generator
Example Application—Personal Video Recorder/Blu-Ray Player
Storage
HDD
R
L
R
L
Analog
Audio
Audio
ADC
Audio/
Video
DAC
24.576MHz
Y
Y
Video
ADC
Amp
Component
Video
Pb
Pr
Pb
Pr
Audio/
Video
DSP
74.25MHz
27MHz
HDMI
I/F
XA
XB
74.25MHz
48 MHz
CLK3
CLK4
27 MHz
Si5350A
USB
Controller
25/125MHz
Ethernet
PHY
Product Family Matrix
Function
Control
Input(s)
Outputs/ Pkg
Part Number
Si5350A-A-GT
Si5350A-A-GU
Si5350A-A-GM
Si5351A-A-GT
Si5351A-A-GU
Si5351A-A-GM
Use
3 (10-MSOP)
8 (24-QSOP)
8 (20-QFN)
Field-
programming2
Pin
Free-running
clock
generator1
25, 27 MHz
xtal
3 (10-MSOP)
8 (24-QSOP)
8 (20-QFN)
In-circuit
configurable
I2C
8 (24-QSOP)
8 (20-QFN)
3 (10-MSOP)
8 (24-QSOP)
8 (20-QFN)
8 (24-QSOP)
8 (20-QFN)
3 (10-MSOP)
8 (24-QSOP)
8 (20-QFN)
Si5350B-A-GU
Si5350B-A-GM
Si5350B-A-GT
Si5351B-A-GU
Si5351B-A-GM
Si5350C-A-GU
Si5350C-A-GM
Si5350C-A-GT
Si5351C-A-GU
Si5351C-A-GM
Field-
Free-running
clock
generator+
VCXO1
25, 27 MHz
xtal + analog
control
Pin
I2C
Pin
I2C
programming2
voltage
In-circuit
configurable
Free-running
and/or
synchronous
clock
generator1
Field-
programming2
25, 27 MHz
xtal
In-circuit
configurable
Note 1. To order a factory-customized Si5350 (e.g. Si5350A-Axxxxx-GT), use ClockBuilder web-based utility
www.silabs.com/ClockBuilder. Utility assigns unique part number (e.g. Si5350A-A00123-GT)
Note 2. Field programming supported using Silicon Labs development kit
Copyright © 2010 by Silicon Laboratories
10.20.10
Silicon Laboratories and Silicon Labs are trademarks of Silicon Laboratories Inc.
Other products or brandnames mentioned herein are trademarks or registered trademarks of their respective holders
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