Monolithic analog-to-digital converter

Details Monolithic analog-to-digital converter Monolithic analog-to-digital converter

H - Electricity

03

M

354/95

H03M 1/00 (2006.01) H01L 21/8222 (2006.01)

Patent

CA 1139447

ABSTRACT OF THE DISCLOSURE A parallel analog-to-digital converter having high speed and high resolution, fabricated on a single integrated-circuit chip in such a manner as to avoid problems typically associated with high speed parallel converters. The converter disclosed by way of example has an eight-bit output, 256 matched comparators for quantizing an analog input signal, and encoding and latching logic for deriving digital outputs from the comparators. Problems related to comparator mismatch- ing, high comparator input capacitance and high com- parator input bias current, are effectively minimized by the use of a triple diffusion fabrication process, which substantially reduces the number of defects in the circuit and provides a relatively high component packing density.

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