Soo, I got some issue with digital potentiometers....
<Sorunome> well, it should be simple
<Sorunome> the thing is i have my sound mixer with feedback loops and op-amps where i had normal analog potentiometers then to regulate the sound level
<Sorunome> and now i set the digital potentiometers to the exact same resistance, i measured it, it is the same, +- 0.04kohm, but with those attached there is no sound output at all while it works with the analog ones fine
<Sorunome> usinc MCP42010
<Sorunome> oh and the potentiometers are all 10k ones so that +- 0.04k is almost nothing, the set value is 3.4k
<DrKerm> Hmmm.
<Sorunome> i mean, i even measured the resistance, so it makes no sense to me
<notipa> any stray voltages around?
<Sorunome> just measured - 0mV, so none
<DrKerm> 0mV is suspicious.
<Sorunome> on the digital pots when unplugged
<Sorunome> also now suddenly i got some sound - extremely quiet in the bg
<notipa> how well do they handle the voltage and current the sound thingy provides?
<Sorunome> idk on the channels they worked, only on the master it started iwth that stuff
<Sorunome> can't find anything in the datasheet D: http://ww1.microchip.com/downloads/en/DeviceDoc/11195c.pdf
<DrKerm> Sounds like something topic-worthy to me at this point.
<Sorunome> wtf the voltage when plugged in for hte analogs is 2.6V but for the digitals 0.6V
<Sorunome> about, changing all the time due to it being a sound signal
Quote:
<Sorunome> well, it should be simple
<Sorunome> the thing is i have my sound mixer with feedback loops and op-amps where i had normal analog potentiometers then to regulate the sound level
<Sorunome> and now i set the digital potentiometers to the exact same resistance, i measured it, it is the same, +- 0.04kohm, but with those attached there is no sound output at all while it works with the analog ones fine
<Sorunome> usinc MCP42010
<Sorunome> oh and the potentiometers are all 10k ones so that +- 0.04k is almost nothing, the set value is 3.4k
<DrKerm> Hmmm.
<Sorunome> i mean, i even measured the resistance, so it makes no sense to me
<notipa> any stray voltages around?
<Sorunome> just measured - 0mV, so none
<DrKerm> 0mV is suspicious.
<Sorunome> on the digital pots when unplugged
<Sorunome> also now suddenly i got some sound - extremely quiet in the bg
<notipa> how well do they handle the voltage and current the sound thingy provides?
<Sorunome> idk on the channels they worked, only on the master it started iwth that stuff
<Sorunome> can't find anything in the datasheet D: http://ww1.microchip.com/downloads/en/DeviceDoc/11195c.pdf
<DrKerm> Sounds like something topic-worthy to me at this point.
<Sorunome> wtf the voltage when plugged in for hte analogs is 2.6V but for the digitals 0.6V
<Sorunome> about, changing all the time due to it being a sound signal