Comparator unit for a flash analog-to-digital converter

Details Comparator unit for a flash analog-to-digital converter Comparator unit for a flash analog-to-digital converter

1988-07-14

1990-03-20

Shoop, Jr., William M.

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

341143, 341160, 330254, H03M 100

Patent

active

049105183

ABSTRACT:
A high speed comparator unit for a flash A/D converter in which a bank of comparator units compare simultaneously an analog input voltage with equally spaced reference voltages, and an encoder ROM produces digital signals based on the comparator unit's outputs. The comparator unit includes a two-stage cascode configuration and a level shifter configuration which effectively reduces the miller-effect of the comparator unit.

REFERENCES:
patent: 4379995 (1983-04-01), Yamada et al.
patent: 4390848 (1983-06-01), Blauschild
patent: 4396891 (1983-08-01), Johansson et al.
patent: 4599599 (1986-07-01), Sekino et al.
patent: 4692641 (1987-09-01), Highton
patent: 4777472 (1988-10-01), Sauer et al.
patent: 4804941 (1989-02-01), Yoshii

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