I am working on a design that uses the Maxim 5250 10 bit quad D to A converter. I am looking to reduce cost and board space. The analog voltages do not need to be highly accurate and a small amount of noise will not be a problem. ( I know, specific numbers would be helpful ) The voltages control DC motors that are part of a feedback loop. The standard d/a on the micro are already tied up with other functions.
They do not need to be quick and I will buffer the o/ps.
I am trying to get some idea of what to expect from a PWM output from the counter timers using a simple RC filter.
What can I expect the minimum o/p voltage to be given that the o/p ports never reach a true zero volts?
If I am using an analog regulator and the standard layout for decoupling caps on the micro, can anyone comment on how stable the o/p will be?
Any input is appreciated. (No pun intended)