D/a converter circuit
AssigneeFujitsu Limited
InventorHisao Suzuki
Life of this patent
Estimating the term…
Abstract
A D/A converter circuit that converts a digital signal to an analog signal within a short period of time. The A/D converter circuit has a plurality of resistors, which are connected in series between a high potential power supply and a low potential power supply, a first switch group, and a second switch group. The first switch group is formed by switches, which are connected to nodes between the resistors. The second switch group is formed by switches, which are also connected to the nodes. A decoder circuit is connected to the switch groups to selectively close one of the first switches and one of the second switches.
Claims16
A D/A converter circuit comprising:
- a plurality of impedance elements connected in series between a first power supply and a second power supply;
- a plurality of switch groups including a first switch group and a second switch group, wherein the first switch group is formed by a plurality of first switches connected to at least a plurality of nodes between the plurality of impedance elements, and the second switch group is formed by a plurality of second switches connected to at least the plurality of nodes;
- and
- a control circuit connected to the switch groups for selectively closing one of the first switches and one of the second switches.
A D/A converter circuit comprising:
- a plurality of resistors connected in series between a first power supply and a second power supply, wherein the plurality of resistors include a first resistor adjacent to the first power supply and a second resistor adjacent to the second power supply;
- a first switch group formed by a plurality of first switches connected to a plurality of inter-resistor nodes between the resistors;
- a second switch group formed by a plurality of second switches connected to the inter-resistor nodes;
- and
- a decoder circuit connected to the first and second switch groups for selectively closing one of the first switches and one of the second switches.
Dependencies are inferred from the claim text.