ycm
Newbie level 5
high OSR
for designing a high resolution delta sigma ADC, if the input to ADC is low frequency signal say 1kHz, if I use first order single bit with very high sampling frequency say 100MHz (OSR=50000), I can achieve a SNR over 140dB. I can also using higher order modulator to achieve the similar SNR. what is the disadvantage by using first order modulator here?
BTW: How do you get the conversion time for one sample in delta sigma ADC?
Thanks.
for designing a high resolution delta sigma ADC, if the input to ADC is low frequency signal say 1kHz, if I use first order single bit with very high sampling frequency say 100MHz (OSR=50000), I can achieve a SNR over 140dB. I can also using higher order modulator to achieve the similar SNR. what is the disadvantage by using first order modulator here?
BTW: How do you get the conversion time for one sample in delta sigma ADC?
Thanks.