Datasheet > ICS3727XPMT

ICS3727XPMT

更新时间： 2024-09-26 11:14:27

品牌	Logo	应用领域
矽成 - ICSI		石英晶振压控振荡器
页数	文件大小	规格书
7页	129K
描述
LOW COST 24 TO 36 MHZ 3.3 VOLT VCXO

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ICS3727XPMT 数据手册

PRELIMINARY INFORMATION

ICS3727XP

LOW COST 24 TO 36 MHZ 3.3 VOLT VCXO

Description

Features

The ICS3727XP combines the functions of a VCXO

(Voltage Controlled Crystal Oscillator) and PLL

(Phase-Locked Loop) frequency doubler onto a single

chip. It is designed primarily for data and clock recovery

applications within end products such as set-top box

receivers.

• ICS3727XP offers 24 to 36 MHz output frequency

range (output frequency = 2x crystal frequency) and

improved power supply noise rejection

• Uses an inexpensive 12 to 18 MHz external crystal

• Ideal for DV CODEC applications using 27 MHz

external pullable crystal with extended pull range to

generate locked 27 MHz clock transport video clock

The ICS3727XP exhibits a moderate VCXO gain of 200

ppm/V typical, when used with a high quality external

pullable quartz crystal.

• On-chip VCXO with guaranteed pull range of 200

ppm minimum

The frequency of the on-chip VCXO is adjusted by an

external control voltage input into pin VIN. Because

VIN is a high impedance input, it can be driven directly

from an PWM RC integrator circuit. Frequency output

increases with VIN voltage input. The usable range of

VIN is 0 to 3.3 V.

• VCXO input tuning voltage 0 to 3.3 V

• Packaged in 8-pin SOIC (150 mil wide)

Block Diagram

VIN

Voltage

12-18 MHz

PLL

Frequency

Doubler

Controlled

24-36 MHz

(2x Crystal Frequency)

Pullable

Crystal

Oscillator

MDS 3727XP A

Revision 102004

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

12 3 4 5 6 7

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