Datasheet > PCS3P25811

PCS3P25811

更新时间： 2024-11-25 05:59:59

品牌	Logo	应用领域
安森美 - ONSEMI		时钟发生器
页数	文件大小	规格书
9页	154K
描述
Spread Spectrum Clock Generator

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中文翻译

获取价格

数据手册

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PCS3P25811 数据手册

PCS3P25811 and PCS3P25812 and PCS3P25814

Spread Spectrum Clock

Generator

Features

• Generates a 1x (PCS3P25811), 2x (PCS3P25812)

dependent signals. It allows significant system cost

savings by reducing the number of circuit board layers,

ferrite beads, shielding, and other passive components

that are traditionally required to pass EMI regulations.

and 4x(PCS3P25814) low EMI spread spectrum

clock of the input frequency

• Provides up to 15dB of EMI suppression

• Input Frequency: 4MHz - 32MHz

• Output Frequency:

The PCS3P25811/12/14 can generate an EMI reduced

clock from crystal, ceramic resonator, or system clock.

The PCS3P25811/12/14 modulate the output of a single

PLL in order to “spread” the bandwidth of a synthesized

cock, and more importantly, decreases the peak

amplitudes of its harmonics. This results in significantly

lower system EMI compared to the typical narrow band

signal produced by oscillators and most frequency

generators. Lowering EMI by increasing a signal’s

bandwidth is called ‘spread spectrum clock generation.’

PCS3P25811: 4MHz - 32MHz

PCS3P25812: 8MHz - 64MHz

PCS3P25814: 16MHz - 128MHz

• Selectable spread options: Down Spread and Center

Spread

• Low Power Dissipation:

3.3V: 20mW (typ) @ 6MHz

3.3V: 24mW (typ) @ 12MHz

The PCS3P25811/12/14 use the most efficient and

optimized modulation profile approved by the FCC and is

implemented in a proprietary all-digital method.

3.3V: 30mW (typ) @ 24MHz

• Low inherent Cycle-to-Cycle Jitter

• Supply Voltage: 2.8V to 3.6V

• LVCMOS Input and output

The PCS3P25811/12/14 have 2 pins S0 and S1 to control

the selection of Center Spread, Down Spread and No-

Spread functions. Additionally there is a 3 level logic

contol FSEL, for selecting one of the three different

frequency ranges within the operating frequency range.

Refer Input/Output Frequency Range Selection Table.

• Functional and Pinout compatible to Cypress

CY25811, CY25812 and CY25814

•

8-pin SOIC, and 8L 2mmX2mm WDFN (TDFN)

Packages

The PCS3P25811/12/14 operate from a 2.8V to 3.6V

supply and are available in 8 pin SOIC, and 8L

2mmX2mm WDFN packages.

Product Description

The PCS3P25811/12/14 devices are versatile spread

spectrum frequency modulators designed specifically for

a wide range of input clock frequencies from 4MHz to

32MHz.

Applications

The PCS3P25811/12/14 are targeted towards EMI

management in applications such as LCD Panels, MFPs,

Digital copiers, Networking, PC peripheral devices,

consumer electronics, and embedded controller systems.

The

PCS3P25811/12/14

reduce

electromagnetic

interference (EMI) at the clock source, allowing system

wide reduction of EMI of down stream clock and data

JANUARY 2010 – Rev. 1

Publication Order Number:

PCS3P25811/D

12 3 4 5 6 7...9

中文翻译

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与PCS3P25811相关器件

型号	品牌	获取价格	描述	数据表
PCS3P25811_1	ONSEMI	获取价格	Spread Spectrum Clock Generator
PCS3P25811AG-08CR	ONSEMI	获取价格	32MHz, OTHER CLOCK GENERATOR, PDSO8, 2 X 2 MM, GREEN, TDFN-8
PCS3P25811AG-08CR	PULSECORE	获取价格	32MHz, OTHER CLOCK GENERATOR, PDSO8, 2 X 2 MM, GREEN, TDFN-8
PCS3P25811AG08SR	ONSEMI	获取价格	Spread Spectrum Clock Generator
PCS3P25811AG-08SR	PULSECORE	获取价格	Clock Generator, 32MHz, CMOS, PDSO8, 0.150 INCH, GREEN, SOIC-8
PCS3P25811AG-08ST	PULSECORE	获取价格	Clock Generator, 32MHz, CMOS, PDSO8, 0.150 INCH, GREEN, SOIC-8
PCS3P25811AG-08TR	ONSEMI	获取价格	32MHz, OTHER CLOCK GENERATOR, PDSO8, GREEN, TSSOP-8
PCS3P25811AG-08TR	PULSECORE	获取价格	32MHz, OTHER CLOCK GENERATOR, PDSO8, GREEN, TSSOP-8
PCS3P25812	ONSEMI	获取价格	Spread Spectrum Clock Generator
PCS3P25812AG-08CR	PULSECORE	获取价格	64MHz, OTHER CLOCK GENERATOR, PDSO8, 2 X 2 MM, GREEN, TDFN-8

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