On flash A/D-converters with low-precision comparators

— Flash analog-to-digital converters can be built using small (and fast) low-precision comparators with unpredictable thresholds followed by a digital look-up table to correct the output. The look-up table should store digital codes with higher precision than the nominal resolution of the converter. The effective resolution of such a scheme with N comparators is roughly log2(N) − 1 bits. The concept is demonstrated by a chip that achieves almost 7 bit resolution with 256 low-precision comparators.

• Type: Conference
• Year: 2006
• Where: ISCAS
• Authors: Matthias Frey, Hans-Andrea Loeliger
• Keywords: Digital Look-up Table, ISCAS 2006, Look-up Table, Low-precision Comparators