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554CF000309DGR

Description
VCXO; DIFF/SE; QUAD FREQ; 10-141
CategoryPassive components   
File Size481KB,15 Pages
ManufacturerSilicon Laboratories Inc
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554CF000309DGR Overview

VCXO; DIFF/SE; QUAD FREQ; 10-141

554CF000309DGR Parametric

Parameter NameAttribute value
typeVCXO
Frequency - Output 127MHz, 74.175824MHz, 74.25MHz
Frequency - Output 2-
Frequency - Output 3-
Frequency - Output 4-
Functionenable/disable
outputCMOS
Voltage - Power3.3V
frequency stability±50ppm
Operating temperature-40°C ~ 85°C
Current - Power (maximum)98mA
size/dimensions0.276" long x 0.197" wide (7.00mm x 5.00mm)
high0.071"(1.80mm)
Package/casing8-SMD, no leads
Current - Power (disabled) (maximum)75mA
Si554
R
EVISION
D
Q
UAD
F
R E Q U E N C Y
V
O L TAG E
- C
O N T R O L L E D
C
RYSTAL
O
SCILLATOR
(VCXO) 10 MH
Z TO
1 . 4 G H
Z
Features
Available with any-rate output
frequencies from 10–945 MHz and
selected frequencies to 1.4 GHz
Four selectable output frequencies
3rd generation DSPLL
®
with superior
jitter performance
3x better frequency stability than
SAW-based oscillators
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
Pb-free/RoHS-compliant
Si5602
Applications
SONET/SDH
xDSL
10 GbE LAN / WAN
Ordering Information:
Low jitter clock generation
Optical modules
Clock and data recovery
See page 10.
Description
The Si554 quad-frequency VCXO utilizes Silicon Laboratories’ advanced
DSPLL
®
circuitry to provide a very low jitter clock for all output frequencies.
The Si554 is available with any-rate output frequency from 10 to 945 MHz
and selected frequencies to 1400 MHz. Unlike traditional VCXOs, where a
different crystal is required for each output frequency, the Si554 uses one
fixed crystal frequency 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 Si554 IC-based VCXO is factory-configurable for a wide
variety of user specifications including frequency, supply voltage, output
format, tuning slope, and temperature stability. Specific configurations are
factory-programmed at time of shipment, thereby eliminating the long lead
times associated with custom oscillators.
Pin Assignments:
See page 9.
(Top View)
FS[1]
7
V
C
1
2
3
8
FS[0]
6
5
4
V
DD
OE
GND
CLK–
CLK+
Functional Block Diagram
V
DD
CLK- CLK+
FS1
Fixed
Frequency XO
Any-rate
10–1400 MHz
DSPLL
®
Clock Synthesis
FS0
ADC
V
c
OE
GND
Rev. 1.2 6/18
Copyright © 2018 by Silicon Laboratories
Si554
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