Digital/analog converter
First Claim
1. A digital/analog converter comprising:
- a divided-voltage generating section that divides a reference supply voltage into a plurality of divided-voltages through a voltage distribution comprising a plurality of nodes;
a decoder section that receives a digital signal so as to output a decoded selection signal;
a first divided-voltage selecting section that selects a first set of nodes from the divided-voltage generating section and outputs a first set of divided voltages based upon the decoded selection signal;
a second divided-voltage selecting section that selects and outputs a second set of divided-voltages from among the first set of divided-voltages on the basis of the decoded selection signal;
a divided-voltage storing section that charges and discharges the second set of divided-voltages output from the second divided-voltage selecting section;
a third divided-voltage selecting section that selects a predetermined voltage among the divided-voltages discharged from the divided-voltage storing section on the basis of the decoded selection signal; and
a voltage output section that outputs the predetermined voltage selected from the third divided-voltage selecting section;
wherein the first divided-voltage selecting section includes a plurality of switches connected to the plurality of nodes formed in the divided-voltage generating section;
wherein the second divided-voltage selecting section includes a plurality of switches connected to the first set of selected nodes, and to nodes adjacent to the first set of selected nodes; and
wherein a voltage associated with the first set of selected nodes is selected as a high voltage, and a voltage associated with the nodes adjacent to the first set of selected nodes is selected as a low voltage.
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Accused Products
Abstract
The present invention relates to a digital/analog converter. The digital/analog converter includes a divided-voltage generating section that divides a reference supply voltage through the voltage distribution; a decoder section that receives a digital signal so as to output a decoded selection signal; a first divided-voltage selecting section that selects and outputs a plurality of divided voltages among the divided-voltages generated from the divided-voltage generating section on the basis of the selection signal output from the decoder section; a second divided-voltage selecting section that selects and outputs a plurality of divided-voltages among the divided-voltages output from the first divided-voltage selecting section on the basis of the selection signal output from the decoder section; a divided-voltage storing section that charges and discharges the plurality of divided-voltages output from the second divided-voltage selecting section; a third divided-voltage selecting section that selects a predetermined voltage among the divided-voltages discharged from the divided-voltages storing section on the basis of the selection signal output from the decoder; and a voltage output section that outputs the predetermined voltage selected from the third divided-voltage selecting section.
18 Citations
13 Claims
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1. A digital/analog converter comprising:
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a divided-voltage generating section that divides a reference supply voltage into a plurality of divided-voltages through a voltage distribution comprising a plurality of nodes; a decoder section that receives a digital signal so as to output a decoded selection signal; a first divided-voltage selecting section that selects a first set of nodes from the divided-voltage generating section and outputs a first set of divided voltages based upon the decoded selection signal; a second divided-voltage selecting section that selects and outputs a second set of divided-voltages from among the first set of divided-voltages on the basis of the decoded selection signal; a divided-voltage storing section that charges and discharges the second set of divided-voltages output from the second divided-voltage selecting section; a third divided-voltage selecting section that selects a predetermined voltage among the divided-voltages discharged from the divided-voltage storing section on the basis of the decoded selection signal; and a voltage output section that outputs the predetermined voltage selected from the third divided-voltage selecting section; wherein the first divided-voltage selecting section includes a plurality of switches connected to the plurality of nodes formed in the divided-voltage generating section; wherein the second divided-voltage selecting section includes a plurality of switches connected to the first set of selected nodes, and to nodes adjacent to the first set of selected nodes; and wherein a voltage associated with the first set of selected nodes is selected as a high voltage, and a voltage associated with the nodes adjacent to the first set of selected nodes is selected as a low voltage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification