Title :
Effects of non-ideal Hadamard modulators on the performance of ΠΔΣ ADC
Author :
Kong, S.K. ; Ku, W.H.
Author_Institution :
Dept. of Electr. & Comput. Eng., California Univ., San Diego, La Jolla, CA, USA
fDate :
1/16/1997 12:00:00 AM
Abstract :
A non-ideal Hadamard modulator in the front-end of ΠΔΣ ADC can be modelled as an ideal Hadamard modulator with gain error in parallel with an offset error. The effects of non-ideal Hadamard modulators can be partially removed by using chopper stabilisation and adaptive channel gain equalisation
Keywords :
Hadamard transforms; adaptive equalisers; choppers (circuits); circuit stability; sigma-delta modulation; ΠΔΣ ADC; adaptive channel gain equalisation; chopper stabilisation; gain error; nonideal Hadamard modulators; offset error;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19970081
