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598ACA000121DGR

Description
Programmable Oscillators Any Frequency I2C Programmable XO
CategoryPassive components   
File Size515KB,28 Pages
ManufacturerSilicon Laboratories
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598ACA000121DGR Overview

Programmable Oscillators Any Frequency I2C Programmable XO

598ACA000121DGR Parametric

Parameter NameAttribute value
Product AttributeAttribute Value
ManufacturerSilicon Laboratories
Product CategoryProgrammable Oscillators
PackagingBox
Si 5 9 8 / S i 5 9 9
10–810 M H
Z
I
2
C P
ROGRAMMABLE
XO/VCXO
Features
I
2
C programmable output
frequencies from 10 to 810 MHz
0.5 ps RMS phase jitter
Superior power supply rejection:
0.3–0.4 ps additive jitter
Available LVPECL, CMOS, LVDS,
and CML outputs
1.8, 2.5, or 3.3 V supply
Pin- and register-compatible with
Si570/571
Programmable with 28 parts per
trillion frequency resolution
Integrated crystal provides stability
and low phase noise
Frequency changes up to
±3500 ppm are glitchless
–40 to 85 °C operation
Industry-standard 5x7 mm package
Si5602
Applications
Ordering Information:
SONET / SDH / xDSL
Ethernet / Fibre Channel
3G SDI / HD SDI
Multi-rate PLLs
Multi-rate reference clocks
Frequency margining
Digital PLLs
CPU / FPGA FIFO control
Adaptive synchronization
Agile RF local oscillators
See page 22.
Pin Assignments:
See page 21.
(Top View)
SDA
7
NC
1
2
3
8
SCL
6
5
4
V
DD
Description
The Si598 XO/Si599 VCXO utilizes Silicon Laboratories' advanced DSPLL®
circuitry to provide a low-jitter clock at any frequency. They are user-
programmable to any output frequency from 10 to 810 MHz with 28 parts per
trillion (PPT) resolution. The device is programmed via a 2-pin I
2
C compatible
serial interface. The wide frequency range and ultra-fine programming resolution
make these devices ideal for applications that require in-circuit dynamic frequency
adjustments or multi-rate operation with non-integer related rates. Using an
integrated crystal, these devices provide stable low jitter frequency synthesis and
replace multiple XOs, clock generators, and DAC controlled VCXOs.
OE
GND
CLK–
CLK+
Functional Block Diagram
V
DD
OE
Power Supply Filtering
Si598
SDA
Fixed
Frequency
Oscillator
Any Frequency
DSPLL®
10 to 810 MHz
Clock Synthesis
CLK+
CLK–
7
V
C
1
2
3
8
SCL
6
5
4
V
DD
Vc
(Si599)
OE
CLK–
CLK+
ADC
I2C Interface
GND
SDA
SCL
GND
Si599
Rev. 1.0 11/11
Copyright © 2011 by Silicon Laboratories
Si598/Si599
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