描述 Description

The FS7140 or FS7145 is a monolithic CMOS clock generator/regenerator IC designed to minimize cost and component count in a variety of electronic systems. Via the I2C-bus interface, the FS7140/45 can be adapted to many clock generation requirements. The length of the reference and feedback dividers, their fine granularity and the flexibility of the post divider make the FS7140/45 the most flexible stand-alone PLL clock generator available.

特性 Features

? Extremely flexible and low-jitter phase locked loop (PLL) frequency synthesis
? No external loop filter components needed
? 150 MHz CMOS or 340 MHz PECL outputs
? Completely configurable via I2C-bus
? Up to four FS714x can be used on a single I2C-bus
? 3.3 V operation
? Independent on-chip crystal oscillator and external reference input
? Very low cumulative jitter

應(yīng)用 Application

? Precision frequency synthesis
? Low-frequency clock multiplication
? Laser beam printers (FS7145)
? Video line-locked clock generation

簡介

FS7140屬于集成電路（IC）的時鐘發(fā)生器PLL頻率合成器。由制造生產(chǎn)的FS7140時鐘發(fā)生器，PLL，頻率合成器時鐘發(fā)生器、PLL 和頻率合成器集成電路 (IC) 可為邏輯器件提供參考信號的穩(wěn)定定時脈沖，這些器件包括計算機、微控制器、數(shù)據(jù)通信系統(tǒng)和圖形/視頻發(fā)生器。這些集成電路可能包括緩沖器、驅(qū)動器、分頻器、倍頻器、多路復(fù)用器、合成器、扇出分配器和預(yù)分頻器。