D/A conversion circuit having n switches, n capacitors and a coupling capacitor

Year	Description
2000	Invention patented by Yukio Tanaka on August 3rd, 2000. Abstract: A D/A conversion circuit is described which comprises a n switching, n capacitors and a coupling circuit. Upper n bit of the digital signal control n switches respectively and control charging and discharging of electric charge into the n capacitors, and the n capacitors are connected to the output line in an upper bit writing period. Lower n bit of the digital signal control the n switches and control charging and discharging of electric charge into the n capacitors, and the capacitors are connected to the output line through the coupling capacitor in a lower bit writing period.
Source: selected by the editor from original sources.

Invention: D/A conversion circuit having n switches, n capacitors and a coupling capacitor