Integrated Circuit System M908-01
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. 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).| Part No. | M908-01 |
|---|---|
| Datasheet | M908-01 Download |
| Manufacturer |  Integrated Circuit System |
| Description | Vcso-based Gbe Clock Generator |
| Buy | Stock & Price |
GENERAL DESCRIPTION
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 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. 28 29 30 31 32 33 34 35 36 M908-01 (Top View) 18 17 16 15 14 13 12 11 10 nFOUT2 FOUT2 nFOUT1 FOUT1 GND nFOUT0 FOUT0 VCC GNDFEATURES
● 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 Figure 1: Pin Assignment Output Frequency Configuration (M908-01-156.25) Ref Clock Frequency (MHz) 25 PLL Ratio 25/4 Output Frequency (MHz) 156.25 Appli...
