843202I中文资料FemtoClock 680MHz, Crystal-to-3.3V Differential LVPECL Frequency Synthesizer数据手册Renesas规格书

描述 Description

The 843202I is a 2 output LVPECL synthesizer optimized to generate Gigabit Ethernet and SONET reference clock frequencies. Using a 19.44MHz and 25MHz, 18pF parallel resonant crystal, 155.52MHz and 156.25MHz frequencies can be generated. The part also allows the use of a recovered clock at QB output. The 843202I uses our FemtoClock™ low phase noise VCO technology and can achieve 1ps or lower typical RMS phase jitter. The 843202I is packaged in a 32-pin LQFP package.

特性 Features

Two 3.3V LVPECL outputs
Selectable crystal oscillator interface or one differential recovered clock inputs
Supports the following output frequencies: 155.52MHz and 156.25MHz
VCO range: 560MHz - 680MHz
RMS phase jitter @ 155.52MHz, using a 19.44MHz crystal (12kHz – 1.3MHz): 0.86ps (typical)
RMS phase jitter @ 156.25MHz, using a 25MHz crystal (1.875MHz –- 20MHz): 0.56ps (typical)
Full 3.3V supply mode
-40°C to 85°C ambient operating temperature
Available in lead-free (RoHS 6) package