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US 7,598,893 B2Granted
Digital-to-analog converter for simultaneous conversion of a plurality of digital signals
AssigneeInfineon Technologies AG
InventorsBertram Gunzelmann, Victor Dias, Andreas Leyk, Volker Christ
Life of this patent
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Abstract
A digital-to-analog converter has a reference value source, a reference value divider arrangement with a tap, a first switch arrangement which is designed to produce an electrical connection between the tap and a first output of the digital-to-analog converter, and a second switch arrangement which is designed to produce an electrical connection between the tap and a second output of the digital-to-analog converter.
Claims17
A digital-to-analog converter for simultaneous conversion of a plurality of digital signals to analog signals, the digital-to-analog converter comprising:
- a reference value source for producing an electrical reference value;
- a reference value divider arrangement for producing a divided reference value from the electrical reference value, the reference value divider arrangement having a tap for tapping off the divided reference value;
- a first switch arrangement, designed producing an electrical connection between the tap on the reference value divider arrangement and a first output of the digital-to-analog converter when the divided reference value corresponds to a value of a first digital signal;
- and
- a second switch arrangement, producing an electrical connection between the tap on the reference value divider arrangement and a second output of the digital-to-analog converter when the divided reference value corresponds to a value of a second digital signal, the first switch arrangement and the second switch arrangement producing the electrical connections independently of one another, wherein the first switch arrangement has a number of first switches for producing electrical connections between the number of taps and the first output, with one tap from the number of taps in each case being associated with one switch, and wherein the second switch arrangement has a number of second switches for producing electrical connections between the number of taps and the second output with one tap from the number of taps in each case being associated with one switch from the number of second switches, wherein the reference value divider arrangement has a number of taps for tapping off the number of different divided reference values, with the first switch arrangement producing an electrical connection between one or more taps from the number of taps and the first output of the digital-to-analog converter, and with the second switch arrangement producing an electrical connection between one or more taps from the number of taps and the second output of the digital-to-analog converter.
2 more elements
A digital-to-analog converter comprising:
- a time multiplexer comprising a first and second input clocked at a first frequency, and a time multiplexed output clocked at twice the first frequency;
- a number of voltage taps;
- a first set of switches coupled to the plurality of voltage taps;
- a second set of switched coupled to the plurality of voltage taps;
- a first output node coupled to the first set of switches, wherein the first set of switches is configured to be switched according to a first value of the time multiplexed output;
- and
- a second output node coupled to the second set of switches, wherein the second set of switches is configured to be switched according to a second value of the time multiplexed output, wherein
- the first set of switches has a number of first switches for producing electrical connections between the number of voltage taps and the first output node, with one voltage tap from the number of voltage taps being associated with one switch from the number of first switches, and
- the second set of switches has a number of second switches for producing electrical connections between the number of voltage taps and the second output node, with one voltage tap from the number of voltage taps being associated with one switch from the number of second switches.
6 more elements
Dependencies are inferred from the claim text.