Datasheet > ICS525RI-12

ICS525RI-12

更新时间： 2024-11-05 11:14:27

品牌	Logo	应用领域
矽成 - ICSI		时钟
页数	文件大小	规格书
9页	179K
描述
User Configurable Clock

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ICS525RI-12 数据手册

ICS525-01/02/11/12

User Configurable Clock

Description

Features

The ICS525-01/02/11/12 are the most flexible way to

generate a high-quality, high-accuracy, high-frequency

clock output from an inexpensive crystal or clock input.

The user can configure the device to produce nearly

any output frequency from any input frequency by

grounding or floating the select pins. Neither

microcontroller, software, nor device programmer are

needed to set the frequency. Using Phase-Locked

Loop (PLL) techniques, the device accepts a standard

fundamental mode, inexpensive crystal to produce

output clocks up to 250 MHz. It can also produce a

highly accurate output clock from a given input clock,

keeping them frequency locked together.

• Packaged as 28-pin SSOP (150 mil body)

• Industrial and commercial versions available in Pb

(lead) free package

• User determines the output frequency by setting all

internal dividers

• Eliminates need for custom oscillators

• No software needed

• Online calculator determines register settings

• Pull-ups on all select inputs

• Input crystal frequency of 5 - 27 MHz

• Input clock frequency of 2 - 50 MHz

• Very low jitter

• Duty cycle of 45/55 up to 200 MHz

• Operating voltage of 3.0 V or 5.5 V

• Ideal for oscillator replacement

• Industrial temperature version available

• For Zero Delay, refer to the ICS527

For similar capability with a serial interface, use the

ICS307. For simple multipliers to produce common

frequencies, refer to the ICS50x family of parts, which

are smaller and more cost effective.

These products are intended for clock generation. They

have low output jitter (variation in the output period), but

input to output skew and jitter are not defined nor

guaranteed. For applications which require defined

input to output timing, use the ICS527-01.

Block Diagram

VDD

X1/ICLK

CLK

REF

Phase Comparator,

Charge Pump, and

Loop Filter

Reference

Divider

Crystal

Oscillator

VCO

Crystal or clock

input

Output

Divider

VCO

Divider

Optional crystal capacitors

GND

R6:R0

V8:V0

S2:S0

MDS 525-01/02/11/12 Q

Revision 101105

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

12 3 4 5 6 7...9

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