843004数据手册集成电路（IC）的时钟发生器PLL频率合成器规格书PDF

描述 Description

The 843004 is a 4 output LVPECL synthesizer optimized to generate Fibre Channel reference clock frequencies. Using a 26.5625MHz 18pF parallel resonant crystal, the following frequencies can be generated based on the 2 frequency select pins (F_SEL[1:0]): 212.5MHz, 187.5MHz, 159.375MHz, 156.25, 106.25MHz, and 53.125MHz. The 843004 uses IDT's 3rd generation low phase noise VCO technology and can achieve 1ps or lower typical rms phase jitter, easily meeting Fibre Channel jitter requirements. The 843004 is packaged in a small 24-pin TSSOP package.

特性 Features

·Four 3.3Vdifferential LVPECL output pairs
·Selectable crystal oscillator interface or LVCMOS/LVTTL single-ended clock input
·Supports the following output frequencies: 212.5MHz, 187.5MHz, 159.375MHz, 156.25MHz, 106.25MHz, 53.125MHz
·VCO range: 560MHz – 680MHz
·RMS phase jitter @ 212.5MHz, using a 26.5625MHz crystal (637kHz – 10MHz): 0.72ps (typical)Offset                   Noise Power100Hz ................ -95.0 dBc/Hz1kHz .................. -114.3 dBc/Hz10kHz ................ -123.8 dBc/Hz100kHz .............. -124.6 dBc/Hz
·Full 3.3V supply mode
·-30°C to 85°C ambient operating temperature
·Available in lead-free (RoHS 6) package