ルネサス エレクトロニクス株式会社 (Renesas Electronics Corporation)
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M908-02

廃止品

VCSO Based Clock Generator

概要

The M908-02 is a Phase-Locked Loop (PLL) based clock generator that uses an internal Voltage Controlled SAW Oscillator (VCSO) to produce a very low jitter output clock. From the M908-02-155.5200, an output clock frequency of 155.52MHz is provided from eight LVPECL clock output pairs. (Other frequencies are available; consult the factory.) The accuracy of the output frequency is assured by the internal PLL that phase-locks the internal VCSO to the reference input frequency (19.44MHz for the M908-02-155.5200). The input reference can either be an external crystal, utilizing the internal crystal oscillator, or a stable external clock source such as a packaged crystal oscillator.

m908-02 - Block Diagram
m908-02 - Pinout
m908-02 - Block Diagram
m908-02 - Pinout
  • Output clock frequency range: 75MHz to 175MHz (Consult the factory for frequency availability)
  • Eight identical LVPECL output pairs
  • Jitter 0.7ps RMS (at 155.52MHz, over 12kHz to 20MHz), typ.
  • Ideal for OC-48/STM-16 clock reference
  • Output-to-output skew < 100ps
  • External XTAL or LVCMOS reference input
  • Integrated SAW (surface acoustic wave) delay line
  • Single 3.3V power supply
  • Small 9mm x 9mm SMT (surface mount) package

設計・開発

ECADモデル

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