552AH000449DG datasheet, PDF - EEWORLD Datasheet

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552AH000449DG: DescriptionVCXO Oscillators VCXO; Diff/SE; Dual Freq; 10-1417 MHz; CategoryPassive components; File Size341KB，15 Pages; ManufacturerSilicon Laboratories

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552AH000449DG Overview

VCXO Oscillators VCXO; Diff/SE; Dual Freq; 10-1417 MHz

552AH000449DG Parametric

Parameter Name	Attribute value
Product Attribute	Attribute Value
Manufacturer	Silicon Laboratories
Product Category	VCXO Oscillators
Frequency	10 MHz to 945 MHz
Frequency Stability	20 PPM
Load Capacitance	15 pF
Operating Supply Voltage	3.3 V
Supply Voltage - Min	2.97 V
Supply Voltage - Max	3.63 V
Output Format	LVPECL
Termination Style	SMD/SMT
Package / Case	5 mm x 7 mm
Minimum Operating Temperature	- 40 C
Maximum Operating Temperature	+ 85 C
Length	7 mm
Height	1.65 mm
Width	5 mm
Packaging	Tray
Current Rating	120 mA
Duty Cycle - Max	55 %
Mounting Style	SMD/SMT

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Si 5 5 2

EVISION

U A L

REQUENCY

OLTAGE

- C

ON TROLLED

R Y S TA L

SCILLATOR

( V C X O ) 1 0 MH

Z TO

1.4 G H

Features



Available with any-rate output

frequencies from 10–945 MHz and

selected frequencies to 1.4 GHz



Two 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



Ordering Information:



SONET/SDH



xDSL



10 GbE LAN/WAN

Low-jitter clock generation



Optical modules



Clock and data recovery

See page 10.

Description

The Si552 dual-frequency VCXO utilizes Silicon Laboratories’ advanced

DSPLL

circuitry to provide a very low jitter clock for all output frequencies.

The Si552 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 Si552 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 Si552 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)

CLK–

GND

CLK+

Functional Block Diagram

CLK- CLK+

Fixed

Frequency XO

Any-rate

10–1400 MHz

DSPLL

Clock Synthesis

ADC

GND

Rev. 1.1 4/13

Si552

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