Title :
Testing of first and second order delta-sigma converters for catastrophic faults
Author :
Amin, M.H. ; Abdelhalim, M.B. ; Amer, H.H.
Author_Institution :
Fac. of Eng., Cairo Univ., Cairo, Egypt
Abstract :
Delta-Sigma analog to digital converters are vital components for mixed-signal systems. So, testing this type of converters is extremely important. This paper studies the low-cost testing of first-order and second-order delta-sigma ADCs. Moreover; only catastrophic faults are considered such as open/short passive components and stuck-at faults in digital components. It is proven that the minimal test set consists of only two values that detect all faults in the assumed fault set. The effect of using different types of counters in the digital subcircuit is investigated and it is found that the two-value test set still detects all faults. Finally, the effect of passive component tolerances is analyzed. All the results are analytically proven and verified by simulations.
Keywords :
analogue-digital conversion; delta-sigma modulation; fault diagnosis; integrated circuit testing; mixed analogue-digital integrated circuits; catastrophic faults; counters; delta-sigma ADC; delta-sigma analog to digital converter; digital subcircuit; first order delta-sigma converter testing; low cost testing; mixed-signal systems; open/short passive component; passive component tolerances; second order delta-sigma converter testing; stuck-at faults; two value test set; Circuit faults; Discharges; Flip-flops; Logic gates; Modulation; Radiation detectors; Testing; Delta-Sigma ADC; fault model; mixed signal circuit; second order ADC; testing;
Conference_Titel :
Circuit Theory and Design (ECCTD), 2011 20th European Conference on
Conference_Location :
Linkoping
Print_ISBN :
978-1-4577-0617-2
Electronic_ISBN :
978-1-4577-0616-5
DOI :
10.1109/ECCTD.2011.6043815
