SI512-13 Datasheet, PDF (1/20 Pages) Silicon Laboratories – Two selectable output frequencies

Si512/513
DUAL FREQUENCY CRYSTAL OSCILLATOR (XO)
100 kHZ TO 250 MHZ
Features
 Supports any frequency from
 3.3, 2.5, or 1.8 V operation
100 kHz to 250 MHz
 Differential (LVPECL, LVDS,
 Two selectable output frequencies HCSL) or CMOS output options
 Low-jitter operation
 Optional integrated 1:2 CMOS
 2 to 4 week lead times
fanout buffer
 Total stability includes 10-year
aging
 Runt suppression on OE and
power on
 Comprehensive production test ^{ Industry standard 5x7 and}
coverage includes crystal ESR and ^{3.2x5 mm packages}
DLD
 Pb-free, RoHS compliant
 On-chip LDO regulator for power
supply noise filtering
 –40 to 85 ^oC operation
Applications
 SONET/SDH/OTN
 Gigabit Ethernet
 Fibre Channel/SAS/SATA
 PCI Express
Description
 Broadcast video
 Switches/routers
 Telecom
 FPGA/ASIC clock generation
The Si512/513 dual frequency XO utilizes Silicon Laboratories' advanced
PLL technology to provide any frequency from 100 kHz to 250 MHz. Unlike a
traditional XO where a different crystal is required for each output frequency,
the Si512/513 uses one fixed crystal and Silicon Labs’ proprietary any-
frequency synthesizer to generate any frequency across this range. This IC-
based approach allows the crystal resonator to provide enhanced reliability,
improved mechanical robustness, and excellent stability. In addition, this
solution provides superior supply noise rejection, simplifying low jitter clock
generation in noisy environments. The Si512/513 is factory-configurable for a
wide variety of user specifications, including frequency, supply voltage,
output format, output enable polarity, and stability. Specific configurations are
factory-programmed at time of shipment, eliminating long lead times and
non-recurring engineering charges associated with custom frequency
oscillators.
Functional Block Diagram
V_DD
OE
Power Supply Filtering
Fixed
Frequency
Oscillator
Any-Frequency
0.1 to 250 MHz
DSPLL^® Synthesis
CLK+
CLK–
Si5602
Ordering Information:
See page 13.
Pin Assignments:
See page 12.
FS 1
6 VDD
OE 2
5 NC
GND 3
4 CLK
Si512 CMOS Dual XO
OE 1
FS 2
GND 3
6 VDD
5 NC
4 CLK
Si513 CMOS Dual XO
FS 1
6 VDD
OE 2
5 CLK–
GND 3
4 CLK+
Si512 LVDS/LVPECL/HCSL/CMOS
Dual XO
OE 1
6 VDD
FS 2
5 CLK–
GND 3
4 CLK+
Si513 LVDS/LVPECL/HCSL/CMOS
Dual XO
Rev. 1.0 5/12
FS
GND
Copyright © 2012 by Silicon Laboratories
Si512/13