571BHC000107DG datasheet, PDF - EEWORLD Datasheet

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571BHC000107DG: Descriptionvcxo oscillators prgml vcxo 8pn 0.5ps rms jitter (ncnr); CategoryPassive components oscillator; File Size420KB，37 Pages; ManufacturerSilicon Laboratories Inc; Environmental Compliance

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vcxo oscillators prgml vcxo 8pn 0.5ps rms jitter (ncnr)

571BHC000107DG Parametric

Parameter Name	Attribute value
Is it Rohs certified?	conform to
Maker	Silicon Laboratories Inc
package instruction	LCC8,.2X.28,100
Reach Compliance Code	compli
Installation features	SURFACE MOUNT
Number of terminals	8
Maximum operating frequency	280 MHz
Minimum operating frequency	10 MHz
Nominal operating frequency	280 MHz
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
Package body material	CERAMIC
Encapsulate equivalent code	LCC8,.2X.28,100
power supply	3.3 V
Certification status	Not Qualified
Maximum slew rate	108 mA
Nominal supply voltage	3.3 V
surface mount	YES

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Si 5 7 0 / S i 5 7 1

10 MH

Features

Any programmable output



frequencies from 10 to 945 MHz and

select frequencies to 1.4 GHz



C serial interface



3rd generation DSPLL

with superior



jitter performance



3x better frequency stability than



SAW-based oscillators



1.4 G H

C P

ROGRAMMABLE

XO/VCXO

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:

High performance

instrumentation



Low-jitter clock generation



Optical modules



Clock and data recovery



SONET/SDH

xDSL

10 GbE LAN/WAN

ATE

See page 32.

Pin Assignments:

See page 31.

(Top View)

SDA

GND

SCL

CLK–

CLK+

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

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.

Functional Block Diagram

CLK-

CLK+

Si570

SDA

Fixed

Frequency

10-1400 MHz



DSPLL Clock

Synthesis

SCL

CLK–

CLK+

SDA

GND

Si571 only

ADC

GND

Si571

Si570/Si571

Rev. 1.5 4/14

Si570/Si571

ABLE

Section

ONTENTS

Page

1. Detailed Block Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

2. Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

3. Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3.1. Programming a New Output Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3.2. Si570 Programming Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

3.3. Si570 Troubleshooting FAQ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

3.4. I2C Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

4. Serial Port Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

5. Si570 (XO) Pin Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

6. Si571 (VCXO) Pin Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

7. Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

8. Si57x Mark Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

9. Outline Diagram and Suggested Pad Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

10. 8-Pin PCB Land Pattern . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Document Change List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

Contact Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

Rev. 1.5

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