525-03中文资料PECL Input Oscar™ User Configurable Clock数据手册Renesas规格书

描述 Description

The 525-03 are the most flexible way to generate a high-quality, high-accuracy, high-frequency clock output from a PECL input. The name OSCaR stands for OSCillator Replacement, as they are designed to replace crystal oscillators in almost any electronic system. 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 PECL clock to produce output clocks up to 250 MHz, keeping them frequency locked together. Resistors are for PECL outputs only. For simple multipliers to produce common frequencies, refer to the Loco™ family of parts, which are smaller and more cost effective. This product is intended for clock generation. It has low output jitter (variation in the output period), but input to output skew and jitter are not defined nor guaranteed.

特性 Features

·Packaged as 28-pin SSOP (150 mil body)
·Highly accurate frequency generation
·User determines the output frequency by setting all internal dividers
·Eliminates need for custom oscillators
·No software needed
·Pull-ups on all select inputs
·PECL input clock frequency of 0.5 to 250 MHz
·Output clock frequencies up to 250 MHz
·Very low jitter
·Operating voltage of 3.0 V or 5.5 V
·25 mA drive capability at TTL levels
·Ideal for oscillator replacement
·Industrial temperature
·Pb (lead) free package
·Advanced, low-power CMOS process