Digital-to-analog conversion circuit and analog-to-digital conve

Details Digital-to-analog conversion circuit and analog-to-digital conve Digital-to-analog conversion circuit and analog-to-digital conve

1995-04-27

1997-09-30

Gaffin, Jeffrey A.

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

341145, 341146, 341156, 341162, 341161, H03M 176

Patent

active

056730454

ABSTRACT:
A digital-to-analog conversion circuit includes a first reference voltage generation circuit for generating a plurality of first reference voltages, a plurality of second reference voltage generation circuits for generating a plurality of second reference voltages created by dividing a difference in potential between adjacent two of the first reference voltages, a first selective control circuit for, upon receiving a first digital input signal group, selecting one of the first reference voltages and applying the selected one to a specified one of a plurality of signal lines during a first period, and selecting all of second reference voltages generated in one of the plurality of second reference voltage generation circuits and applying all the selected second reference voltages to signal lines other than the specified signal line, respectively, during a second period succeeding the first period, and a second selective control circuit for, upon receiving a second digital input signal group, applying a voltage of the specified signal line to an analog output terminal during the first period, and applying voltages of the signal lines other than the specified signal line to the analog output terminal during the second period.

REFERENCES:
patent: 3597761 (1971-08-01), Fraschilla et al.
patent: 4553128 (1985-11-01), Pilost
patent: 4897658 (1990-01-01), Fujii et al.
patent: 4903028 (1990-02-01), Fukushima
patent: 5059978 (1991-10-01), Valdenaire
patent: 5181034 (1993-01-01), Takakura et al.
patent: 5315301 (1994-05-01), Hosotani et al.
patent: 5400029 (1995-03-01), Kobayashi

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