Speakerguy
Active Member
I see a lot of the crystal oscillators out there spec 45/55 min/max duty cycle at their operating frequency. They always spec this at 1/2 Vdd.
Why do they spec it at this voltage level? I am looking for an oscillator for an asynchronous SPDIF receiver and audio PWM modulation chip and would really like something that was 50/50. Do these crystal oscillators 'shape up' and give a better duty cycle (not to mention clock jitter) at full operating voltage?
Why do they spec it at this voltage level? I am looking for an oscillator for an asynchronous SPDIF receiver and audio PWM modulation chip and would really like something that was 50/50. Do these crystal oscillators 'shape up' and give a better duty cycle (not to mention clock jitter) at full operating voltage?