LMX2594: LMX2594 OSC IN waveform

Geoffrey Kline

Prodigy 20 points

Part Number: LMX2594

I am feeding LMX2594 OSCIN pins with 50MHz signal, and using the OSCIN X2 Doubler.

Is there a preferred waveform to apply to the OSC IN pins of the LMX2594? Square wave? Sine wave?

If square wave, is there a recommended logic family for minimal phase noise?

Thanks.

over 6 years ago

0 Dean Banerjee over 6 years ago

TI__Mastermind 28001 points

Geoffry,

Square wave input is definitely better.

For phase noise, LPECL might be slightly better, but for spurs, maybe LVDS is slightly better. In any case, LVPECL and LVDS are close and square wave is best.

Regards,

Dean

Clock & timing

Clock & timing forum

LMX2594: LMX2594 OSC IN waveform