qingyu guo

68S08QG4 Internal DCO jitter

Discussion created by qingyu guo on Mar 20, 2008
Latest reply on Mar 20, 2008 by Jim Donelson
i'm  using the QG4  to generate a pwm  and filter the output with an active filter,
i hope get a stable voltage from that, but i got a unexpected signal which has a
perio about 2ms, it is unacceptable in my system. the PLL's reference frequency
is from the 32.768Hz crystal, i tested the jitter of the pwm output ,it is very huge,
could someone tell me how to reduce the jitter of the QG4's internal oscillator?
thank you!