PL671中文资料Clock Generators Clock Conditioning Products数据手册Microchip规格书

描述 Description

The PL671-01-xxx is an advanced programmable Spread Spectrum clock generator (PSSCG), and a member of PicoPLL™ Programmable Clock family.The PL671-01 offers up to three 200MHz outputs, and allows for programming the modulation type (Center or Down Spread) as well as 16 modulation magnitudes (±0.125% to ±2.0% or -0.25% to -4.0%). In addition, the CSEL[0:1] pins can be used to toggle the device thru 4 pre-programmed configurations. The option of being able to turn ‘ON/OFF’ the Spread Spectrum modulation allows for completing a design with PL671-01 and having the assurance of turning ‘ON’ the EMI modulation, if EMI becomes an issue. The PL671-01’s frequency modulation greatly reduces the fundamental and harmonic frequencies’ peak magnitude, therefore reducing the system level Electro Magnetic Interference (EMI), by as much as 20dB.

特性 Features

·Advanced programmable PLL with Spread Spectrum
·Crystal or Reference Clock input:·Fundamental crystal: 10MHz to 40MHz
·Reference input: 1MHz to 200MHz

·Accepts ≥0.1V reference signal input voltage
·Output frequency range: up to 166MHz @ 2.5V or up to 200MHz @ 3.3V operation
·Up to 3 programmable outputs
·Programmable Spread Spectrum Modulation Magnitude:·Center Spread: ±0.125% to ±2.0% in ±0.125% steps
·Down Spread: -0.25% to -4.0% in 0.25% steps

·Spread Spectrum On/Off selection
·Programmable output drive (4mA, 8mA, 16mA)
·Low Cycle to Cycle jitter
·Single 2.5V or 3.3V ±10% power supply
·Operating temperature range from -40°C to +85°C
·Available in 8-pin SOP, MSOP and 6-pin SOT GREEN/RoHS compliant packaging

简介

PL671属于集成电路（IC）的时钟发生器PLL频率合成器。由制造生产的PL671时钟发生器，PLL，频率合成器时钟发生器、PLL 和频率合成器集成电路 (IC) 可为逻辑器件提供参考信号的稳定定时脉冲，这些器件包括计算机、微控制器、数据通信系统和图形/视频发生器。这些集成电路可能包括缓冲器、驱动器、分频器、倍频器、多路复用器、合成器、扇出分配器和预分频器。