Circuit configuration for a D/A and A/D converter

Details Circuit configuration for a D/A and A/D converter Circuit configuration for a D/A and A/D converter

1994-02-14

1996-02-20

Young, Brian K.

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

341108, H03M 100

Patent

active

054933005

ABSTRACT:
Using only one R2R network, driven by a digital logic, it is possible to implement both a D/A and A/D converter, An existing stabilized voltage V.sub.cc is used instead of a separate reference voltage source. The D/A and A/D converter is calibrated with this voltage and an operational amplifier circuited as a comparator. Starting with the known voltage value V.sub.cc and the assigned bit combination, it is possible to measure analog voltages from analog voltage sources using further operational amplifiers circuited as comparators.

REFERENCES:
patent: 3569959 (1971-03-01), Arase
patent: 3731302 (1973-05-01), Neer
patent: 3859581 (1975-01-01), Gardner
patent: 4141065 (1979-02-01), Sumi et al.
patent: 4149256 (1979-04-01), Sumi et al.
"High Print 6200", print head control, p. 4-4, Figure 4-2, Siemens AG 1990.
"High Print 6200", print head control, p. 4-1, Figure 4-1, Siemens AG 1990.

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