Title :
Improved compensation for analog-to-digital converters
Author :
Irons, F.H. ; Hummels, D.M. ; Kennedy, S.P.
Author_Institution :
Dept. of Electr. & Comput. Eng., Maine Univ., Orono, ME, USA
fDate :
8/1/1991 12:00:00 AM
Abstract :
Two changes are recommended for procedures used in building two-dimensional state-space error correction tables to compensate high-speed analog-to-digital converters (ADCs). The modifications require three frequencies to calibrate all states as well as extrapolation of estimated outputs to achieve a straight line input-output integral characteristic for the ADC. A simulated 6-bit ADC with only 35-dBc spurious free signal range is shown to be correctable to 53 dB over 80% of the Nyquist band when suggested changes are used to calibrate the ADC
Keywords :
analogue-digital conversion; compensation; state-space methods; 2D state space error correction; 6 bit; Nyquist band; analog-to-digital converters; compensation; high speed ADCs; spurious free signal range; Analog-digital conversion; Calibration; Circuit noise; Circuits and systems; Computer errors; Fourier transforms; Frequency estimation; Signal processing algorithms; State estimation; Uncertainty;
Journal_Title :
Circuits and Systems, IEEE Transactions on
