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843251I-12

Obsolete

FemtoClock Crystal-to-3.3V,2.5V LVPECL Clock Generator

843251I-12 Datasheet
NOTICE - The following device(s) are recommended alternatives:
8V49NS0312 - FemtoClock NG 12-Output Clock Generator

Overview

The 843251I-12 is a 10Gb Ethernet clock generator that uses an 18pF parallel resonant crystal over the range of 23.2MHz - 30MHz. For Ethernet applications, a 25MHz crystal is used. The 843251I- 12 uses our 3rd generation low phase noise VCO technology, and can achieve <1ps rms phase jitter performance over the 1.875MHz - 20MHz integration range. The 843251I-12 is packaged in a small 8-pin TSSOP, making it ideal for use in systems with limited board space.

843251I-12 - Block Diagram
843251I-12 - Pinout
843251I-12 - Block Diagram
843251I-12 - Pinout
  • One Differential LVPECL output
  • Crystal oscillator interface, 18pF parallel resonant crystal (23.2MHz - 30MHz)
  • Output frequency range: 290MHz - 750MHz
  • VCO range: 580MHz - 750MHz
  • RMS phase jitter @ 312.5MHz, using a 25MHz crystal (1.875MHz - 20MHz): 0.36ps (typical)
  • 3.3V or 2.5V operating supply
  • -40°C to 85°C ambient operating temperature
  • Available in lead-free (RoHS 6) package

Documentation

Design & Development

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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Models
Type Title Date
Model - IBIS
843251I-12 IBIS Model
ZIP 68 KB
1 item

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