MC12430FA 查看數據表（PDF） - Motorola => Freescale

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产品描述 (功能)

生产厂家

MC12430FA

High Frequency Clock Generator

Motorola => Freescale 

MC12430

timing budget. The jitter performance meets the needs of

most system designs while adding the flexibility of frequency

margining and field upgrades. These features are not

available with a fixed frequency SAW oscillator.

Output Voltage Swing vs Frequency

In the divide by one mode the output rise and fall times will

limit the peak to peak output voltage swing. For a 400MHz

output the peak to peak swing of the 12430 output will be

approximately 700mV. This swing will gradually degrade as

the output frequency increases, at 800MHz the output swing

will be reduced to approximately 400mV. For a worst case

analysis it would be safe to assume that the 12430 output will

always generate at least a 400mV output swing. Note that

most high speed ECL receivers require only a few hundred

millivolt input swings for reliable operation. As a result the

output generated by the 12430 will, under all conditions, be

sufficient for clocking standard ECL devices. Note that if a

larger swing is desired the 12430 could drive a single gate

ECLinPS Lite amplifier like the MC100LVEL16. The LVEL16

will speed up the output edge rates and produce a full swing

ECL output at 800MHz.

TIMING SOLUTIONS

9

BR1333 — Rev 6

MOTOROLA

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