Re: DDS question: why sine lookup?

On 5/9/25 21:53, john larkin wrote:

Yes. The existing product has a user-programmable clock up to 15 MHz,
all the expensive ADI DDS chip would do. With the maximum size
waveform table (65K points) the output waveform rate is 229 Hz. The
thing is due for redesign, and we'd like to go faster on the clock, 20
MHz at least, preferably more.
 https://highlandtechnology.com/Product/V375
 Arbs are plentiful and cheap, but this one was designed specifically
to simulate geared rotating machines.

then is a the few ns of jitter with the clock rate you could get with an FPGA really much of an issue, isn't that still way better than what you'd expect from the real sensors on a rotating assembly?