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AssigneeIndustrial Technology Research Institute
InventorsYung-Hui Chung, Yun-Heng Tseng, Bo-Wei Chen
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A digital-to-analog converter (DAC) and an operation method thereof are provided. The DAC includes a first operational amplifier (OPA), a second OPA, a resistor circuit, first switches, second switches, a first voltage shift circuit and a second voltage shift circuit. The first OPA outputs a first operating voltage. The second OPA outputs a second operating voltage. First terminals of the first switches receive the first operating voltage. First terminals of the second switches receive the second operating voltage. Second terminals of the first switches and the second switches are coupled to the resistor circuit. The first switches and the second switches perform switching operations in response to digital values. The first voltage shift circuit provides a first compensation voltage to the first OPA. The second voltage shift circuit provides a second compensation voltage to the second OPA.
A digital-to-analog converter, wherein the digital-to-analog converter converts a digital value into an analog signal, wherein the digital-to-analog converter comprises:
A operation method for a digital-to-analog converter, wherein the digital-to-analog converter converts a digital value into an analog signal, wherein the digital-to-analog converter comprises a first operational amplifier, a second operational amplifier, a resistor circuit, a plurality of first switches and a plurality of second switches, wherein the first operational amplifier receives a first reference voltage through a non-inverting input terminal of the first operational amplifier and outputs a first operating voltage according to the first reference voltage, wherein the second operational amplifier receives a second reference voltage through a non-inverting input terminal of the second operational amplifier and outputs a second operating voltage according to the second reference voltage, wherein the resistor circuit comprises a plurality of input resistors, wherein input terminals of the plurality of input resistors are coupled to an output terminal of the digital-to-analog converter, wherein first terminals of the plurality of first switches receives the first operating voltage, wherein first terminals of the plurality of second switches receives the second operating voltage, wherein second terminals of the plurality of first switches and second terminals of the plurality of second switches are correspondingly coupled to second terminals of the input resistors, wherein the operation method comprises:
Dependencies are inferred from the claim text.