rainman.cn
Member level 2
Assume ideal sigma-delta ADC(1st ,or 2nd order),
input dc level 'x', and get output from sigma-delta adc by y=(x1+...xn)/n
x1,...xn are the quantizer output, 'n' is sampling times.
then define the error: |y-x|=err
I get the similar results when the sigma-delta adc is 1st order or 2nd order, why?
According the theory, the higher the order, the less the in band error. but why I get the similar results?
thx for ur reply.
Wang
rainman.cn@hotmail.com
input dc level 'x', and get output from sigma-delta adc by y=(x1+...xn)/n
x1,...xn are the quantizer output, 'n' is sampling times.
then define the error: |y-x|=err
I get the similar results when the sigma-delta adc is 1st order or 2nd order, why?
According the theory, the higher the order, the less the in band error. but why I get the similar results?
thx for ur reply.
Wang
rainman.cn@hotmail.com