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M908-01 - Vcso-based Gbe Clock Generator

General Description

The M908-01 is a PLL (Phase Locked Loop) based clock generator that uses an internal VCSO (Voltage Controlled SAW Oscillator) to produce a very low jitter output clock.

It is ideal for Gigabit Ethernet.

Key Features

  • 156.25MHz output clock frequency (M908-01-156.2500).
  • Eight identical LVPECL output pairs.
  • Jitter 0.7ps RMS (over 12kHz-20MHz).
  • Ideal for Gigabit Ethernet 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 9 x 9 mm SMT (surface mount) package http://www. DataSheet4U. net/ Figure 1: Pin Assignment Output Frequency Configuration (M908.

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Datasheet Details

Part number M908-01
Manufacturer Integrated Circuit System
File Size 311.75 KB
Description Vcso-based Gbe Clock Generator
Datasheet download datasheet M908-01 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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Integrated Circuit Systems, Inc. Preliminary Information M908-01 VCSO BASED GBE CLOCK GENERATOR PIN ASSIGNMENT (9 x 9 mm SMT) XTAL_1 / REF_IN GND nFOUT5 FOUT5 nFOUT4 FOUT4 nFOUT3 FOUT3 VCC XTAL_2 FOUT6 nFOUT6 FOUT7 nFOUT7 VCC DNC DNC DNC 27 26 25 24 23 22 21 20 19 GENERAL DESCRIPTION The M908-01 is a PLL (Phase Locked Loop) based clock generator that uses an internal VCSO (Voltage Controlled SAW Oscillator) to produce a very low jitter output clock. It is ideal for Gigabit Ethernet. An output clock frequency of 156.25MHz (with the M908-01-156.2500) is provided from eight LVPECL clock output pairs. The accuracy of the output frequency is assured by the internal PLL that phase-locks the internal VCSO to the reference input frequency (25MHz for the M908-01-156.2500).