Coded data generation or conversion – Analog to or from digital conversion – Analog to digital conversion
Patent
1996-07-09
1998-03-31
Gaffin, Jeffrey A.
Coded data generation or conversion
Analog to or from digital conversion
Analog to digital conversion
341155, H03M 100
Patent
active
057343420
ABSTRACT:
A full-flash N-bit analog-to-digital converter with Gray-code digital output (V.sub.out) comprises only N current sources (CS.sub.1, CS.sub.2, CS.sub.3) to power the 2.sup.N -1 differential amplifiers connected to a voltage reference ladder RL and only N latches (L.sub.1, L.sub.2, L.sub.3) which directly furnish an N-bit Gray code at their outputs (LO). For this purpose the differential amplifiers are grouped and stacked in a particular manner and the output signals of the individual differential amplifiers in a group are cross-coupled to the inputs (LI.sub.1, LI.sub.2) of the latch associated with the group.
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"An 8-Bit 100-MHz Full-Nyquist Analog-to-Digital Converter", by R.J. Van de Plassche et al, IEEE Journal of Solid-State Circuits, vol. 23, No. 6, Dec. 1988, pp. 1334-1344.
Eason Leroy
Gaffin Jeffrey A.
Jean-Pierre Peguy
U.S. Philips Corporation
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