04200863 is referenced by 73 patents and cites 1 patents.

An array of binary weighted capacitors, an additional capacitor having a capacitance value equivalent to that of the least of the binary weighted capacitors, a voltage comparator, switches for interconnecting the capacitors with certain predetermined voltage levels and the comparator, and a sequencing circuit are included. One side of all of the capacitors is connected to one input terminal on the comparator and the other side has applied thereto the signal to be quantized. Switch sequencing combines divided portions of a reference voltage with the signal to be quantized for presentation to the input of the comparator which thereby provides a serial digit output connected to the sequencing circuit. In this fashion, a linear conversion between an analog and a digital signal is made by the sequencing circuit. A nonlinear converter between digital and analog signal presentation is also disclosed. Resolution of the coder/decoder is increased by providing a reference voltage generator capable of supplying stepped increments of the reference voltage to the capacitor array during the comparison process.

Title
Weighted capacitor analog/digital converting apparatus and method
Application Number
838908
Publication Number
4200863
Application Date
December 11, 1978
Publication Date
April 29, 1980
Inventor
James L McCreary
Santa Clara
CA, US
Paul R Gray
Orinda
CA, US
David A Hodges
Berkeley
CA, US
Agent
Townsend & Townsend
Assignee
The Regents of the University of California
CA, US
IPC
H03K 13/02
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