Coded data generation or conversion – Analog to or from digital conversion – Analog to digital conversion
Patent
1987-08-31
1990-05-01
Shoop, Jr., William M.
Coded data generation or conversion
Analog to or from digital conversion
Analog to digital conversion
341120, 341159, H03M 136
Patent
active
049222520
ABSTRACT:
An analog/digital converter operating on the principle of charge distribution includes a capacitor network having dual-weighted capacitors including two smallest capacitors. The capacitors each have two terminals. A comparator has a first input connected to one of the terminals of each of the capacitors and a second input and a reference switch is connected between each of the one terminals and a first reference potential. Other switches each selectively connect the other of the terminals of a respective one of the capacitors to an input analog potential, the first reference potential and a second reference potential. A coupling capacitor is connected upstream of the first input of the comparator.
REFERENCES:
patent: 4129863 (1978-12-01), Gray et al.
patent: 4195282 (1980-03-01), Cameron
patent: 4200863 (1980-04-01), Hodges
patent: 4295089 (1981-10-01), Cooperman
patent: 4399426 (1983-08-01), Tan
patent: 4517549 (1985-05-01), Tsukakashi
patent: 4529965 (1985-07-01), Lee
patent: 4742330 (1988-05-01), Doermberg et al.
patent: 4831381 (1989-05-01), Hester
IEEE Journal of Solid-State Circuits, vol. SC-14, No. 6, Dec. 1979, pp. 926-932.
Electronic Engineering, vol. 51, No. 632, Dec. 1979, pp. 32-37.
Draxelmayr Dieter
Schrittesser Gerold
Greenberg Laurence A.
Lerner Herbert L.
Romano Gary J.
Shoop Jr. William M.
Siemens Aktiengesellschaft
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