Datasheet > ICS348RLF

ICS348RLF

更新时间： 2024-09-26 11:14:23

品牌	Logo	应用领域
矽成 - ICSI		/
页数	文件大小	规格书
7页	156K
描述
Quad PLL Field Programmable VersaClock Synthesizer

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ICS348RLF 数据手册

ICS348

Quad PLL Field Programmable VersaClock Synthesizer

Description

Features

The ICS348 field programmable clock synthesizer

generates up to 9 high-quality, high-frequency clock

outputs including multiple reference clocks from a low

frequency crystal or clock input. The ICS348 has 4

independent on-chip PLLs and is designed to replace

crystals and crystal oscillators in most electronic

systems.

• Packaged as 20-pin SSOP (QSOP)

• Eight addressable registers

• Replaces multiple crystals and oscillators

• Output frequencies up to 200 MHz at 3.3V

• Input crystal frequency of 5 to 27 MHz

• Input clock frequency of 2 to 50 MHz

• Up to nine reference outputs

Using ICS’ VersaClock software to configure PLLs

and outputs, the ICS348 contains a One-Time

Programmable (OTP) ROM to allow field

programmability. Programming features include eight

selectable configuration registers, up to two sets of four

low-skew outputs.

• Up to two sets of four low-skew outputs

• Operating voltages of 3.3 V

• Advanced, low power CMOS process

• For one output clock, use the ICS341 (8-pin). For two

output clocks, use the ICS342 (8-pin). For three

output clocks, use the ICS343 (8-pin). For more than

three outputs, use the ICS345 or ICS348.

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.

• Available in Pb (lead) free packaging

The ICS348 is also available in factory programmed

custom versions for high-volume applications.

Block Diagram

VDD

CLK1

CLK2

PLL1

OTP

ROM

with

PLL

S2:S0

CLK3

PLL2

PLL3

PLL4

Divide

Logic

and

Output

Enable

Control

Values

CLK4

CLK5

CLK6

CLK7

CLK8

CLK9

Crystal or

clock input

X1/ICLK

Crystal

Oscillator

GND

External capacitors are

required with a crystal input.

PDTS

MDS 348 H

Revision 051705

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

12 3 4 5 6 7

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