Overview
Description
The 843204I is a 4 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 843204I uses our FemtoClock™ low phase noise VCO technology and can achieve 1ps or lower typical RMS phase jitter. The 843204I is packaged in a 48-pin TSSOP package.
Features
- Four 3.3V LVPECL outputs
- Selectable crystal oscillator interface or LVCMOS/LVTTL single-ended input
- 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 - 20MHz): 0.98ps (typical)
- RMS phase jitter @ 156.25MHz, using a 19.44MHz crystal (1.875MHz - 20MHz): 0.52ps (typical)
- Full 3.3V supply mode
- -40°C to 85°C ambient operating temperature
- Available in lead-free (RoHS 6) package
Comparison
Applications
Design & Development
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on the CAD Model links in the Product Options table. If a symbol or model isn't available, it can be requested directly from SamacSys.
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