309RILFT datasheet, PDF - EEWORLD Datasheet

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309RILFT: Descriptionclock synthesizer / jitter cleaner serial programmable triple pll SS versac; Categorysemiconductor Other integrated circuit (IC); File Size98KB，10 Pages; ManufacturerIDT (Integrated Device Technology, Inc.); Websitehttp://www.idt.com/; Environmental Compliance

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309RILFT Overview

clock synthesizer / jitter cleaner serial programmable triple pll SS versac

309RILFT Parametric

Parameter Name	Attribute value
Manufacture	IDT (Integrated Device Technology)
Product Category	Clock Synthesizer / Jitter Cleane
RoHS	Yes
Package / Case	QSOP-20
Packaging	Reel
Factory Pack Quantity	2500

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DATASHEET

SERIAL PROGRAMMABLE TRIPLE PLL SS VERSACLOCK SYNTH

Description

The ICS309 is a versatile serially-programmable, triple

PLL with spread spectrum clock source. The ICS309

can generate any frequency from 250kHz to 200 MHz,

and up to 6 different output frequencies simultaneously.

The outputs can be reprogrammed on-the-fly, and will

lock to a new frequency in 10 ms or less.

To reduce system EMI emissions, spread spectrum is

available that supports modulation frequencies of

31 kHz and 120 kHz, as well as modulation amplitudes

of +/-0.25% to +/-2.0%. Both center and down-spread

options are available.

The device includes a PDTS pin which tri-states the

output clocks and powers down the entire chip.

The ICS309 default for non-programmed start-up are

buffered reference clock outputs on all clock output

pins.

IDT’s VersaClock

programming software allows the

user to configure up to 9 outputs with target

frequencies, spread spectrum capabilities or buffered

reference clock outputs. The VersaClock

software

automatically configures the PLLs for optimal overall

performance.

ICS309

Features

•

Packaged in 20-pin SSOP (QSOP) – Pb-free, RoHS

compliant

•

Highly accurate frequency generation

•

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

•

Serially programmable: user determines the output

frequency via a 3-wire interface

•

Spread Spectrum frequency modulation for reduced

system EMI

•

Center or Down Spread up to 4% total

•

Selectable 32 kHz and 120 kHz modulation

•

Eliminates need for custom quartz oscillators

Input crystal frequency of 5 - 27 MHz

Input clock frequency of 3 - 50 MHz

Output clock frequencies up to 200 MHz

Operating voltage of 3.3 V

Up to 9 reference clock outputs

Power down tri-state mode

Very low jitter

Block Diagram

V DD

STROBE

SCLK

DATA

P LL1 w ith

S pread

S pectrum

CLK1

CLK2

CLK3

Divide

Logic

and

Output

Enable

Control

P LL2

CLK4

CLK5

CLK6

CLK7

CLK8

C rystal or

clock input

X 1/IC LK

C rystal

O scillator

P LL3

CLK9

E xternal capacitors are

required w ith a crystal input.

GND

P D TS

IDT®

SERIAL PROGRAMMABLE TRIPLE PLL SS VERSACLOCK SYNTH

ICS309

REV L 091311

309RILFT Related Products

	309RILFT	309RLF	ICS309RLF	ICS309RILF
Description	clock synthesizer / jitter cleaner serial programmable triple pll SS versac	clock synthesizer / jitter cleaner serial programmable triple pll SS versac		Integrated Device Technology
Product Category	Clock Synthesizer / Jitter Cleane	Clock Synthesizer / Jitter Cleane	Integrated Device Technology	Integrated Device Technology

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