Datasheet > 570AAA000260DGR

570AAA000260DGR

更新时间： 2024-11-06 05:47:03

品牌	Logo	应用领域
芯科 - SILICON		/
页数	文件大小	规格书
32页	204K
描述
Oscillator, 10MHz Min, 1417.5MHz Max, 1417.5MHz Nom

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570AAA000260DGR 数据手册

Si570/Si571

10 MHZ TO 1.4 GHZ I²C PROGRAMMABLE XO/VCXO

Features



Any programmable output

frequencies from 10 to 945 MHz and

select frequencies to 1.4 GHz



Internal fixed crystal frequency

ensures high reliability and low

aging

Si5602



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



I C serial interface

3rd generation DSPLL with superior

jitter performance

3x better frequency stability than

SAW-based oscillators



Applications

Ordering Information:



SONET/SDH

xDSL

10 GbE LAN/WAN



Low-jitter clock generation

Optical modules

Clock and data recovery

See page 27.

Pin Assignments:

Description

See page 26.

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

(Top View)

SDA

via an I C serial interface. Unlike traditional XO/VCXOs where a different

V_DD

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.

CLK–

CLK+

GND

SCL

Functional Block Diagram

Si570

CLK- CLK+

V_DD

SDA

V_C

V_DD

10-1400 MHz

DSPLL^Clock

Synthesis

Fixed

Frequency

SDA

SCL

CLK–

CLK+

Si571 only

GND

ADC

SCL

GND

Si571

V_C

Rev. 1.4 4/13

Si570/Si571

12 3 4 5 6 7...32

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