Crystal-to-HCSL Clock Synthesizer W/Spread Spectrum
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Overview
Description
The 841202-245 is a two output clock synthesizer optimized to generate low jitter with or without spread spectrum modulation. Spread type and amount can be configured via the SSC control pins. Using a 25MHz, 18pF parallel resonant crystal, the device will generate HCSL clocks at either 25MHz, 100MHz, 125MHz or 250MHz. The 841202-245 uses a low jitter VCO and is packaged in a 32-pin VFQFN package.
Features
- Two differential HCSL output pairs at: 100MHz, 125MHz or 250MHz
- HCSL outputs can be terminated to drive LVDS loads up to 175MHz
- 25MHz crystal interface
- Supports the following output frequencies: 25MHz, 100MHz, 125MHz or 250MHz
- VCO range: 250MHz - 700MHz
- Supports SSC downspread at 0.05% and -0.75%, centerspread at ±0.25% and no spread options
- Cycle-to-cycle jitter: 15ps (typical)
- Period jitter, RMS: 2.5ps (typical)
- Full 3.3V operating supply mode
- 0°C to 70°C ambient operating temperature
- Available in lead-free (RoHS 6) packages
Design & Development
Software & Tools
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.
Product Options
Processing table
| 32 | C | Yes | Tray | |||
| 32 | C | Yes | Reel |
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