ICS280 datasheet(1/8 Pages) ICSI

номер детали	ICS280

подробное описание детали	Package Outline and Package Dimensions (16-pin TSSOP,173 Mil. Body)

PDF	8 Pages

Scroll/Zoom	100%

производитель	ICSI [Integrated Circuit Solution Inc]

домашняя страница	http://www.icsi.com.tw

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ICS280

MDS 280 C

1

Revision 062205

Integrated Circuit Systems, Inc.

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

Triple PLL Field Prog. Spread Spectrum Clock Synthesizer

PRELIMINARY INFORMATION

Description

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.

Using ICS’ VersaClockTM 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.

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.

Features

• Packaged as 16-pin TSSOP

• 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

• Operating voltages of 3.3 V

• Controllable output drive levels

• Advanced, low-power CMOS process

• Available in Pb (lead) free packaging

Block Diagram

Crystal

Oscillator

GND

3

VDD

PDTS

PLL2

PLL3

Divide

Logic

and

Output

Enable

Control

S2:S0

3

OTP

ROM

with PLL

Values

X2

Crystal or

Clock Input

External capacitors

are required with a crystal input.

X1/ICLK

PLL1 with

Spread

Spectrum

CLK1

CLK3

CLK4

CLK2

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