Datasheet > ICS290PGILF

ICS290PGILF

更新时间： 2024-10-27 11:14:23

品牌	Logo	应用领域
矽成 - ICSI		晶体外围集成电路光电二极管时钟
页数	文件大小	规格书
8页	168K
描述
Triple PLL Field Prog. Spread Spectrum Clock Synthesizer

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ICS290PGILF 数据手册

PRELIMINARY INFORMATION

ICS290

Triple PLL Field Prog. Spread Spectrum Clock Synthesizer

Description

Features

• Packaged as 20-pin TSSOP

The ICS290 field programmable spread spectrum

clock synthesizer generates up to eight high-quality,

high-frequency clock outputs including multiple

reference clocks from a low-frequency crystal input. It

is designed to replace crystals, crystal oscillators and

stand alone spread spectrum devices in most

electronic systems.

• Eight addressable registers

• Replaces multiple crystals and oscillators

• Output frequencies up to 200 MHz at 3.3 V

• Configurable Spread Spectrum Modulation

• Input crystal frequency of 5 to 27 MHz

• Clock input frequency of 3 to 166 MHz

• Up to eight reference outputs

Using ICS’ VersaClock software to configure PLLs

and outputs, the ICS290 contains a One-Time

Programmable (OTP) ROM for field programmability.

Programming features include input/output

frequencies, spread spectrum amount, eight selectable

configuration registers and up to two sets of four

low-skew outputs.

• Up to two sets of four low-skew outputs

• Operating voltages of 3.3 V

• Controllable output drive levels

• Advanced, low-power CMOS process

• Available in Pb (lead) free packaging

Using Phase-Locked Loop (PLL) techniques, the

device runs from a standard fundamental mode,

inexpensive crystal, or clock. It can replace multiple

crystals and oscillators, saving board space and cost.

The ICS290 is also available in factory programmed

custom versions for high-volume applications.

Block Diagram

VDD

PLL1 with

Spread

Spectrum

CLK1

CLK2

CLK3

CLK4

CLK5

CLK6

CLK7

CLK8

S2:S0

OTP

ROM

with PLL

Values

Divide

Logic

and

Output

Enable

Control

PLL2

PLL3

X1/ICLK

Crystal

Oscillator

Crystal or

Clock Input

GND

External capacitors

are required with a crystal input.

PDTS

MDS 290 C

Revision 062305

Integrated Circuit Systems, Inc. ● 525 Race Street, San Jose, CA 95126 ● tel (408) 297-1201 ● www.icst.com

12 3 4 5 6 7 8

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