High-speed analog-to-digital converter

Details High-speed analog-to-digital converter High-speed analog-to-digital converter

1977-07-15

1978-08-15

Miller, Charles D.

Communications: electrical

Audible indication

Percussion-type sound producer

324 83D, H03K 1302

Patent

active

041076680

ABSTRACT:
A high speed apparatus for converting an analog signal to a digital signal is disclosed. The analog-to-digital converter phase modulates a predetermined carrier signal with the analog signal and this phase modulated signal is transmitted along separate parallel paths to a first and a second phase detector where the phase relationship between the phase modulated signal and each of a first and a second sample, respectively, of the carrier signal which differ in phase by substantially 90 degrees from each other is detected. The output signal of each detector is compared with a reference potential to generate a zero or a one dependent on the magnitude of the detector output relative to the reference potential. Subsequent bits of the digital output signal can be generated by frequency doubling both the phase modulated signal and the carrier signal as applied to the previous parallel path for conversion in a separate corresponding parallel path.

REFERENCES:
patent: 3068456 (1962-12-01), Nevius
patent: 3343157 (1967-09-01), Carre
patent: 3624641 (1971-11-01), Brennan
patent: 3745559 (1973-07-01), Mattern
patent: 3761916 (1973-09-01), Schenck

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