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571AJB000420DG

Description
VCXO; DIFF/SE; I2C PROG; 10-1417
CategoryPassive components    oscillator   
File Size562KB,36 Pages
ManufacturerSilicon Laboratories Inc
Environmental Compliance
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571AJB000420DG Overview

VCXO; DIFF/SE; I2C PROG; 10-1417

571AJB000420DG Parametric

Parameter NameAttribute value
Is it Rohs certified?conform to
MakerSilicon Laboratories Inc
package instructionLCC8,.2X.28,100
Reach Compliance Codecompliant
Installation featuresSURFACE MOUNT
Number of terminals8
Maximum operating frequency810 MHz
Minimum operating frequency10 MHz
Nominal operating frequency810 MHz
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Package body materialCERAMIC
Encapsulate equivalent codeLCC8,.2X.28,100
power supply3.3 V
Certification statusNot Qualified
Maximum slew rate130 mA
Nominal supply voltage3.3 V
surface mountYES
Si 5 7 0 / S i 5 7 1
10 MH
Z
Features
TO
1.4 G H
Z
I
2
C P
ROGRAMMABLE
XO/VCXO
Any programmable output
frequencies from 10 to 945 MHz and
select frequencies to 1.4 GHz
I
2
C serial interface
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 LVPECL, CMOS,
LVDS, and CML outputs
Industry-standard 5x7 mm
package
Pb-free/RoHS-compliant
1.8, 2.5, or 3.3 V supply
Si5602
Applications
Ordering Information:
SONET/SDH
xDSL
10 GbE LAN/WAN
ATE
High performance
instrumentation
Low-jitter clock generation
Optical modules
Clock and data recovery
See page 31.
Pin Assignments:
See page 30.
(Top View)
SDA
7
NC
1
6
V
DD
Description
The Si570 XO/Si571 VCXO utilizes Silicon Laboratories’ advanced DSPLL
®
circuitry to provide a low-jitter clock at any frequency. The Si570/Si571 are user-
programmable to any output frequency from 10 to 945 MHz and select frequencies
to 1400 MHz with <1 ppb resolution. The device is programmed via an I
2
C serial
interface. Unlike traditional XO/VCXOs where a different crystal is required for
each output frequency, the Si57x uses one fixed-frequency crystal and a DSPLL
clock synthesis IC to provide any-frequency operation. 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.
OE
2
5
CLK–
GND
3
8
SCL
4
CLK+
Functional Block Diagram
V
DD
CLK-
CLK+
Si570
SDA
7
OE
Fixed
Frequency
XO
10-1400 MHz
DSPLL Clock
Synthesis
V
C
1
6
V
DD
SDA
SCL
OE
2
5
CLK–
Si571 only
ADC
GND
3
8
SCL
4
CLK+
GND
V
C
Si571
Si570/Si571
Rev. 1.6 6/18
Copyright © 2018 by Silicon Laboratories
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