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550HC644M532DGR

Description
VCXO; DIFF/SE; SINGLE FREQ; 10-1
CategoryPassive components    oscillator   
File Size458KB,15 Pages
ManufacturerSilicon Laboratories Inc
Environmental Compliance
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550HC644M532DGR Overview

VCXO; DIFF/SE; SINGLE FREQ; 10-1

550HC644M532DGR Parametric

Parameter NameAttribute value
Is it lead-free?Lead free
Is it Rohs certified?conform to
MakerSilicon Laboratories Inc
package instructionROHS COMPLIANT PACKAGE-6
Reach Compliance Codecompliant
Other featuresCOMPLEMENTARY OUTPUT; TRI-STATE; ENABLE/DISABLE FUNCTION; TAPE AND REEL
Maximum control voltage2.5 V
Minimum control voltage
maximum descent time0.35 ns
Frequency Adjustment - MechanicalNO
Frequency offset/pull rate125 ppm
frequency stability50%
JESD-609 codee4
linearity10%
Manufacturer's serial numberSI550
Installation featuresSURFACE MOUNT
Number of terminals6
Maximum operating frequency1417 MHz
Minimum operating frequency10 MHz
Nominal operating frequency644.532 MHz
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Oscillator typeECL
Package body materialPLASTIC/EPOXY
Encapsulate equivalent codeDILCC6,.2
physical size7.0mm x 5.0mm x 1.85mm
power supply2.5 V
Certification statusNot Qualified
longest rise time0.35 ns
Maximum slew rate117 mA
Maximum supply voltage2.75 V
Minimum supply voltage2.25 V
Nominal supply voltage2.5 V
surface mountYES
Terminal surfaceNickel/Gold (Ni/Au)
Si550
R
EVISION
D
V
O L TAG E
- C
ONTR OLLED
C
RYSTAL
O
S C I L L A T O R
(VCXO)
10 MH
Z TO
1 . 4 G H
Z
Features
Available with any frequency from
10 to 945 MHz and select
frequencies to 1.4 GHz
3rd generation DSPLL
®
with
superior jitter performance (0.5 ps)
3x better temperature stability than
SAW-based oscillators
Excellent PSRR performance
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
Ordering Information:
See page 10.
Applications
SONET/SDH
xDSL
10 GbE LAN/WAN
Low-jitter clock generation
Optical modules
Clock and data recovery
Pin Assignments:
See page 9.
(Top View)
V
C
1
2
3
6
5
4
V
DD
Description
The Si550 VCXO utilizes Silicon Laboratories’ advanced DSPLL
®
circuitry to
provide a low-jitter clock at high frequencies. The Si550 supports any
frequency from 10 to 945 MHz and select frequencies to 1417 MHz. Unlike
traditional VCXOs, where a different crystal is required for each output
frequency, the Si550 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 Si550 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.
OE
GND
CLK–
CLK+
Functional Block Diagram
V
DD
Fixed
Frequency
XO
Any-Frequency
10 MHz–1.4 GHz
DSPLL
®
Clock Synthesis
CLK+
CLK–
Vc
ADC
OE
GND
Rev. 1.2 6/18
Copyright © 2018 by Silicon Laboratories
Si550
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