308RILFT datasheet, PDF - EEWORLD Datasheet

Datasheet> All Categories > semiconductor> Other integrated circuit (IC)> 308RILFT

308RILFT: Descriptionclock synthesizer / jitter cleaner serial programmable quad pll VERSAclock; Categorysemiconductor Other integrated circuit (IC); File Size150KB，9 Pages; ManufacturerIDT (Integrated Device Technology, Inc.); Websitehttp://www.idt.com/; Environmental Compliance

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308RILFT Overview

clock synthesizer / jitter cleaner serial programmable quad pll VERSAclock

308RILFT 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 QUAD PLL VERSACLOCK SYNTHESIZER

Description

The ICS308 is a versatile serially programmable, quad

PLL clock source. The ICS308 can generate any

frequency from 250 kHz 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. Smooth transitions

(in which the clock duty cycle remains roughly 50%) are

guaranteed if the output divider is not changed.

The device includes a PDTS pin which tri-states the

output clocks and powers down the entire chip.

The ICS308 default for non-programmed start-up are

buffered reference clock outputs on all clock output

pins.

ICS308

Features

•

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

compliant

•

Operating voltage of 3.3 V

•

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

•

Eliminates need for custom quartz oscillators

•

Input crystal frequency of 5 - 27 MHz

•

Optional programmable on-chip crystal capacitors

•

Output clock frequencies up to 200 MHz

•

Reference clock output

•

Power down tri-state mode

•

Very low jitter

Block Diagram

V DD

CLK1

P LL1

CLK2

Divide

Logic

and

Output

Enable

Control

CLK3

CLK4

CLK5

CLK6

CLK7

CLK8

CLK9

STROBE

SCLK

DATA

P LL3

C rystal or

clock input

X 1/IC LK

C rystal

O scillator

GND

P D TS

P LL4

P LL2

E xternal capacitors are

required w ith a crystal input.

IDT™ / ICS™

SERIAL PROGRAMMABLE QUAD PLL VERSACLOCK SYNTHESIZER 1

ICS308

REV L 051310

308RILFT Related Products

	308RILFT	ICS308RLFT	ICS308RILFT
Description	clock synthesizer / jitter cleaner serial programmable quad pll VERSAclock	Integrated Device Technology	Integrated Device Technology
Product Category	Clock Synthesizer / Jitter Cleane	Integrated Device Technology	Integrated Device Technology
Manufacturer	-	IDT (Integrated Device Technology, Inc.)	IDT (Integrated Device Technology, Inc.)

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