Hello,
In our customer , there is the problem of output glitch when they change the code from 8000h to 7FFFh or from 7FFFh to 8000h.
The glitch peak at the DAC is about +/-1V and the peak at the opamp output is about +/-2V.
When they add the 47pF to the DAC output, the glitch level is decreased to about +/-600mV.
Then , we have the following questions.
(1) Countermeasure of glitch
Can we add the capacitor at the Vout?
Could you please let me know if there is any concern?
I appreciate it if you have any other countermeasure of this glitch.
(2)Maximum cap at the Vout
Since our customer glitch target is less than +/-400mV, they would like to increase additional capacitor.
Are there any limit of additional capacitor?
Could you please let me know if recommended maximum capacitance at Vout?
Please see the attached file as waveform.
Best Regards,
Ryuji
