ICS341 datasheet(1/9 Pages) IDT

Part #	ICS341

Description	FIELD PROGRAMMABLE SS VERSACLOCK SYNTHESIZER

PDF	9 Pages

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Manufacturer	IDT [Integrated Device Technology]

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DATASHEET

FIELD PROGRAMMABLE SS VERSACLOCK SYNTHESIZER

I CS3 4 1

IDT® / ICS™ FIELD PROGRAMMABLE SS VERSACLOCK SYNTHESIZER

1

ICS341

REV N 072816

Description

The ICS341 is a low cost, single-output, field programmable

clock synthesizer. The ICS341 can generate an output

frequency from 250 kHz to 200 MHz and may employ

Spread Spectrum techniques to reduce system

electro-magnetic interference (EMI).

Using IDT’s VersaClock™software to configure the PLL and

output, the ICS341 contains a One-Time Programmable

(OTP) ROM to allow field programmability. Programming

features include 4 selectable configuration registers.

The device employs Phase-Locked Loop (PLL) techniques

to run from a standard fundamental mode, inexpensive

crystal, or clock. It can replace multiple crystals and

oscillators, saving board space and cost.

The device also has a power-down feature that tri-states the

clock outputs and turns off the PLLs when the PDTS pin is

taken low.

The ICS341 is also available in factory programmed custom

versions for high-volume applications.

Features

• 8-pin SOIC package (Pb-free)

• Highly accurate frequency generation

• M/N Multiplier PLL: M = 1...2048, N = 1...1024

• Output clock frequencies up to 200 MHz

• Four ROM locations for frequency and spread selection

• Spread spectrum capability for lower system EMI

• Center or Down Spread up to 4% total

• Selectable 32 kHz or 120 kHz modulation

• Input crystal frequency from 5 to 27 MHz

• Input clock frequency from 2 to 50 MHz

• Operating voltage of 3.3 V

• Advanced, low-power CMOS process

• For two output clocks, use the ICS342. For three output

clocks, see the ICS343. For more than three outputs, see

the ICS345 or ICS348.

Block Diagram

Crystal

Oscillator

PLL Clock Synthesis,

Spred Spectrum and

Control Circuitry

CLK

PDTS (output and PLL)

OTP ROM

with PLL

Divider

Values

S1:0

2

VDD

GND

X2

Crystal or

clock input

External capacitors are

required with a crystal input.

X1/ICLK

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