Coded data generation or conversion – Analog to or from digital conversion – Analog to digital conversion
Patent
1992-07-07
1994-01-11
Hoff, Marc S.
Coded data generation or conversion
Analog to or from digital conversion
Analog to digital conversion
341159, H03M 112
Patent
active
052785610
ABSTRACT:
The present invention provides an analog-to-digital converter which is improved in high frequency characteristics of the analog signal input circuit. The stray capacitance possessed by the input line is dispersed and the impedance is made lower by the analog signal input line which is formed of a uniform transmission line. In other words, a first uniform transmission line to which an analog signal is inputted and having a characteristic impedance is connected with second uniform transmission lines having two kinds of characteristic impedances and each connected with a comparator group so that versatility in mask design is enhanced.
REFERENCES:
patent: 3610960 (1971-10-01), Hofstein
patent: 4633225 (1986-12-01), Hayashi et al.
patent: 4804940 (1989-02-01), Takigawa et al.
patent: 4833445 (1989-05-01), Buchele
Millman et al., "Pulse, Digital, and Switching Waveforms", (McGraw-Hill, USA, 1965), p. 83.
Motorola MECL Integrated Circuits, Fourth Edition, Motorola Inc., USA, 1989, pp. 1-20 to 1-23.
"Analog Devices Data Book," published by Analog Devices K K., vol. 1, pp. 12-355--12-367, Jun. 1990.
Hoff Marc S.
Matsushita Electric - Industrial Co., Ltd.
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