DZC
Full Member level 2
I am designing a second order sigma_delta modulator for audio application.
The input frequency is 8kHz and the sampling rate is 1MHz.
The design target is 16bit but he simulated 3rd distortion of the SDM is as high as -54dB.
The slew rate of the first OTA designed to be 20V/µs.
What might is reason of the distortion and how can I get rid of them?
Thanks for all your suggestion.
The input frequency is 8kHz and the sampling rate is 1MHz.
The design target is 16bit but he simulated 3rd distortion of the SDM is as high as -54dB.
The slew rate of the first OTA designed to be 20V/µs.
What might is reason of the distortion and how can I get rid of them?
Thanks for all your suggestion.