Si533
REVISION D
DUAL FREQUENCY CRYSTAL OSCILLATOR (XO)
(10 MHZ TO 1.4 GHZ)
Features
Available with any-frequency output
frequencies from 10 MHz to 945 MHz
and select frequencies to 1.4 GHz
2 selectable output frequencies
Internal fixed crystal frequency
ensures high reliability and low
aging
Available CMOS, LVPECL,
LVDS, and CML outputs
3.3, 2.5, and 1.8 V supply options
Industry-standard 5 x 7 mm
package and pinout
Si5602
®
3rd generation DSPLL with superior
jitter performance
3x better frequency stability than
SAW-based oscillators
Pin 1 output enable (OE)
Pb-free/RoHS-compliant
Applications
Ordering Information:
See page 7.
SONET/SDH
Networking
SD/HD video
Clock and data recovery
FPGA/ASIC clock generation
Pin Assignments:
See page 6.
Description
The Si533 dual frequency XO utilizes Silicon Laboratories’ advanced
DSPLL circuitry to provide a low jitter clock at high frequencies. The Si533
(Top View)
®
is available with any-frequency output frequency from 10 to 945 MHz and
select frequencies to 1400 MHz. Unlike a traditional XO, where a different
crystal is required for each output frequency, the Si533 uses one fixed crystal
to provide a wide range of output frequencies. This IC based approach allows
the crystal resonator to provide exceptional frequency stability and reliability.
In addition, DSPLL clock synthesis provides superior supply noise rejection,
simplifying the task of generating low jitter clocks in noisy environments
typically found in communication systems. The Si533 IC based XO is factory
configurable for a wide variety of user specifications including frequency,
supply voltage, output format, and temperature stability. Specific
configurations are factory programmed at time of shipment, thereby
eliminating long lead times associated with custom oscillators.
VDD
1
2
3
6
5
4
OE
FS
CLK–
CLK+
GND
LVDS/LVPECL/CML
Functional Block Diagram
VDD
1
2
3
6
5
4
OE
FS
VDD
CLK– CLK+
NC
Any-frequency
10–1400 MHz
DSPLL®
Clock
Synthesis
GND
CLK+
Fixed
Frequency
XO
CMOS
OE
FS
GND
Rev. 1.2 5/11
Copyright © 2011 by Silicon Laboratories
Si533