Charge-summing digital-to-analog converter

Details Charge-summing digital-to-analog converter Charge-summing digital-to-analog converter

1997-09-02

1999-03-30

Young, Brian

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

341144, H03M 182

Patent

active

058894853

ABSTRACT:
An integrated circuit includes a digital bus providing a first portion of less significant signals, and a second portion of more significant signals. A digital-to-charge converter connected to the digital bus includes circuitry to convert the less significant portion of the signals to a first charge, and to convert the more significant portion of the signals to a second charge. A charge-to-voltage converter connected to the digital-to-charge converter includes circuitry to convert the first charge to an intermediate voltage. A voltage-to-charge converter connected to the charge-to-voltage converter converts the intermediate voltage to a third charge. A charge-summer connected to the digital-to-charge converter and the voltage-to-charge converter combines the second charge with the third charge to produce a combined charge. The charge-to-voltage converter also is connected to the charge-summer to convert the combined charge to an analog output voltage.

REFERENCES:
patent: 5400028 (1995-03-01), Schlig
patent: 5684487 (1997-11-01), Timko

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