CLOCK GENERATOR+VCXO. SI5351B-B Datasheet

SI5351B-B GENERATOR+VCXO. Datasheet pdf. Equivalent


Part SI5351B-B
Description I2C-PROGRAMMABLE ANY-FREQUENCY CMOS CLOCK GENERATOR+VCXO
Feature Si5351A/B/C-B I2C-PROGRAMMABLE ANY-FREQUENCY CMOS CLOCK GENERATOR + VCXO Features  https://www.s.
Manufacture Silicon Labs
Datasheet
Download SI5351B-B Datasheet


Si5351A/B/C-B I2C-PROGRAMMABLE ANY-FREQUENCY CMOS CLOCK GEN SI5351B-B Datasheet
Recommendation Recommendation Datasheet SI5351B-B Datasheet




SI5351B-B
Si5351A/B/C-B
I2C-PROGRAMMABLE ANY-FREQUENCY CMOS CLOCK
GENERATOR + VCXO
Features
https://www.silabs.com/timing/clock- Glitchless frequency changes
generators/cmos
Separate voltage supply pins
Generates up to eight non-integer-
provide level translation:
related frequencies from 2.5 kHz to
200 MHz
I2C user definable configuration
Core VDD: 2.5 or 3.3 V
Output VDDO: 1.8, 2.5, or 3.3 V
Excellent PSRR eliminates external
Exact frequency synthesis at each
power supply filtering
output (0 ppm error)
Very low power consumption
Highly linear VCXO
Adjustable output delay
Optional clock input (CLKIN)
Available in three packages types:
Low output period jitter: < 70 ps pp,
typ
Configurable spread spectrum
selectable at each output
Operates from a low-cost, fixed
frequency crystal: 25 or 27 MHz
10-MSOP: 3 outputs
16-QFN (3x3 mm): 4 outputs
20-QFN (4x4 mm): 8 outputs
PCIE Gen 1 compatible
Supports HCSL compatible swing
Supports static phase offset
Programmable rise/fall time control
Applications
10-MSOP
16-QFN
20-QFN
Audio/video equipment, gaming
Printers, scanners, projectors
Handheld Instrumentation
Laser range finder
Description
Residential gateways
Networking/communication
Servers, storage
XO replacement
Ordering Information:
See page 34
The Si5351 is an I2C configurable clock generator that is ideally suited for
replacing crystals, crystal oscillators, VCXOs, phase-locked loops (PLLs), and
fanout buffers in cost-sensitive applications. Based on a PLL/VCXO + high
resolution MultiSynth fractional divider architecture, the Si5351 can generate any
frequency up to 200 MHz on each of its outputs with 0 ppm error. Three versions
of the Si5351 are available to meet a wide variety of applications. The Si5351A
generates up to 8 free-running clocks using an internal oscillator for replacing
crystals and crystal oscillators. The Si5351B adds an internal VCXO and
provides the flexibility to replace both free-running clocks and synchronous
clocks. It eliminates the need for higher cost, custom pullable crystals while
providing reliable operation over a wide tuning range. The Si5351C offers the
same flexibility but synchronizes to an external reference clock (CLKIN).
Rev. 1.3 3/20
Copyright © 2020 by Silicon Laboratories
Si5351A/B/C-B



SI5351B-B
Si5351A/B/C-B
Functional Block Diagrams
Si5351A (20-QFN)
XA
PLL
OSC
A
XB
PLL
B
A0
SDA
SCL
OEB
SSEN
I2C
Control
Logic
MultiSynth
0
R0
MultiSynth
1
R1
MultiSynth
2
R2
MultiSynth
3
R3
MultiSynth
4
R4
MultiSynth
5
R5
MultiSynth
6
R6
MultiSynth
7
R7
Si5351B (20-QFN)
XA
OSC
PLL
XB
VCXO
VC
SDA
SCL
OEB
SSEN
I2C
Control
Logic
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
VDDOA
CLK0
CLK1
VDDOB
CLK2
CLK3
VDDOC
CLK4
CLK5
VDDOD
CLK6
CLK7
2
Rev. 1.3







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