Datasheet > ICS280

ICS280

更新时间： 2024-10-26 22:48:15

品牌	Logo	应用领域
矽成 - ICSI		/
页数	文件大小	规格书
8页	161K
描述
Package Outline and Package Dimensions (16-pin TSSOP,173 Mil. Body)

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ICS280 数据手册

PRELIMINARY INFORMATION

ICS280

Triple PLL Field Prog. Spread Spectrum Clock Synthesizer

Description

Features

• Packaged as 16-pin TSSOP

The ICS280 field programmable spread spectrum

clock synthesizer generates up to four 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

• Input clock frequency of 3 to 166 MHz

• Up to four reference outputs

Using ICS’ VersaClock software to configure PLLs

and outputs, the ICS280 contains a One-Time

Programmable (OTP) ROM for field programmability.

Programming features include input/output

frequencies, spread spectrum amount and eight

selectable configuration registers.

• 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 ICS280 is also available in factory programmed

custom versions for high-volume applications.

Block Diagram

VDD

PLL1 with

Spread

Spectrum

S2:S0

OTP

CLK1

CLK2

CLK3

CLK4

ROM

with PLL

Values

Divide

Logic

and

Output

Enable

Control

PLL2

PLL3

Crystal or

Clock Input

X1/ICLK

Crystal

Oscillator

GND

External capacitors

are required with a crystal input.

PDTS

MDS 280 C

Revision 062205

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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