概览
描述
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
- 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
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应用
设计和开发
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