Datasheet > PL671-30

PL671-30

更新时间： 2024-09-21 14:55:43

品牌	Logo	应用领域
美国微芯 - MICROCHIP		/
页数	文件大小	规格书
6页	368K
描述
CREATE AND SAMPLE YOUR CUSTOM PL671 HERE ? The PL671-30 is a high performance programmable sprea

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数据手册

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PL671-30 数据手册

(Preliminary)PL671-30

PicoEMI^TMProgrammable Spread Spectrum Clock

FEATURES

PIN CONFIGURATION

 Accepts Reference Clock input

o Reference Clock: 1MHz - 200MHz

 Output Frequency up to 200MHz

 Center and Down Spread Spectrum Modulation

 Four selectable pre-programmed configurations

 Max 100ps Cycle to Cycle jitter

 Single 2.5V ~ 3.3V, ± 10% power supply

 Operating temperature range from -40C to 85C

 Available in SOP-8L GREEN/RoHS compliant

Package

FIN

VDD

CSEL1^

GND

CLK0

CSEL0^

SOP-8L

Note: ^ Denotes 60KΩ Pull-up resistor

DESCRIPTION

The PL671-30 is a high performance programmable spread spectrum clock. It allows for programming the

modulation type (Center or Down Spread) and 16 modulation magnitudes (±0.125% to ±2.0% or -0.25% to -4.0%).

The CSEL[0:1] pins can switch between four pre-programmed configurations adding to the flexibility.

Input

(MHz)

Spread

Spectrum Type

Spread Spectrum

Modulation Amplitude

Output

(MHz)

CSEL1

CSEL0

Configurable as

Center: ±0.125% to ±2.0%

Down: -0.25% to -4.0%

1 – 200

(Programmable

Multiplier)

Configurable as

Center or Down

1 - 200

BLOCK DIAGRAM

Modulation

XIN/FIN

Xtal

Osc

R-

Counter

XOUT

Phase

Detector

Charge

Pump

Loop

Filter

VCO

M-

Counter

CSEL[0:1]

CLK0

Built-in Crystal load Cap.

No external caps are required.

Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1(408) 944 -0800 • fax +1(408) 474-1000 • www.micrel.com Rev 7/25/07 Page 1

12 3 4 5 6

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