S i 5 3 5 0 B -B
F ACTORY - P ROGRAMMABLE A NY - F REQUENCY CMOS
C L O C K G ENERATOR + V C X O
Features
www.silabs.com/custom-timing
Generates up to 8 non-integer-related
frequencies from 2.5 kHz to 200 MHz
Exact frequency synthesis at each
output (0 ppm error)
Highly linear VCXO gain (kv)
Glitchless frequency changes
Low output period jitter: < 70 ps pp, typ
Configurable Spread Spectrum
selectable at each output
User-configurable control pins:
Output Enable (OEB_0/1/2)
Power Down (PDN)
Frequency Select (FS_0/1)
Spread Spectrum Enable (SSEN)
Supports static phase offset
Rise/fall time control
Operates from a low-cost, fixed
frequency AT-cut, non-pullable
crystal: 25 or 27 MHz
Separate voltage supply pins provide
level translation:
Core VDD: 2.5 V or 3.3 V
Output VDDO: 1.8 V, 2.5 V, or 3.3 V
Excellent PSRR eliminates external
power supply filtering
Very low power consumption
(25 mA, core, typ)
Available in 2 packages types:
10-MSOP: 3 outputs
20-QFN (4x4 mm): 8 outputs
PCIE Gen 1 compliant
Supports HCSL compatible swing
HDTV, DVD/Blu-ray, set-top box
Audio/video equipment, gaming
Printers, scanners, projectors
Handheld instrumentation
20-QFN
Ordering Information:
See page 20
Applications
10-MSOP
Residential gateways
Networking/communication
Servers, storage
XO replacement
Description
The Si5350B combines a clock generator and VCXO function into a single device. A
flexible architecture enables this user definable custom timing device to generate
any of the specified output frequencies from either the internal PLL or the VCXO.
This allows the Si5350B to replace multiple crystals, crystal oscillators, and VCXOs.
Custom pin-controlled Si5350B devices can be requested using the ClockBuilder
web-based part number utility: www.silabs.com/ClockBuilder.
Functional Block Diagram
Rev. 1.0 4/15
Copyright © 2015 by Silicon Laboratories
Si5350B-B
