DIGITAL-TO-ANALOG CONVERTER WITH NON-UNIFORM RESOLUTION
First Claim
Patent Images
1. A circuit, comprising:
- a digital-to-analog converter with non-uniform resolution for converting a digital signal into an analog signal, comprising;
high-resolution circuitry;
reduced-resolution circuitry coupled to the high-resolution circuitry;
a switch coupled to the high-resolution circuitry and to the reduced-resolution circuitry, wherein the switch couples one of the high-resolution circuitry and the reduced-resolution circuitry to an output node; and
a decoder coupled to the switch, wherein the decoder receives the digital signal to control the switch.
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Abstract
A circuit includes a digital-to-analog converter with non-uniform resolution for converting a digital signal into an analog signal. The digital-to-analog converter includes high-resolution circuitry, reduced-resolution circuitry coupled to the high-resolution circuitry and a switch coupled to the high-resolution circuitry and to the reduced-resolution circuitry. The switch couples one of the high-resolution circuitry and the reduced-resolution circuitry to an output node. The circuit also includes a decoder coupled to the switch. The decoder receives the digital signal to control the switch.
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Citations
46 Claims
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1. A circuit, comprising:
a digital-to-analog converter with non-uniform resolution for converting a digital signal into an analog signal, comprising; high-resolution circuitry; reduced-resolution circuitry coupled to the high-resolution circuitry; a switch coupled to the high-resolution circuitry and to the reduced-resolution circuitry, wherein the switch couples one of the high-resolution circuitry and the reduced-resolution circuitry to an output node; and a decoder coupled to the switch, wherein the decoder receives the digital signal to control the switch. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A circuit, comprising:
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a digital-to-analog converter having an input for receiving a digital signal; a voltage-controlled oscillator coupled to the digital-to-analog converter, comprising a capacitor bank coupled to a plurality of switches for adjusting an operating range of the voltage-controlled oscillator; an operating range controller coupled to the voltage controlled oscillator configured to determine whether the digital signal at the digital-to-analog converter input corresponds to a designated operating range and control the plurality of switches to adjust the operating range of the voltage-controlled oscillator if the digital signal does not correspond to the designated operating range. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method for converting a digital signal into an analog signal using a digital-to-analog converter with non-uniform resolution, comprising:
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receiving a digital signal; decoding, by the digital-to-analog converter, the digital signal to produce a control signal; providing a voltage to high-resolution circuitry and reduced-resolution circuitry; controlling, by the digital-to-analog converter, a switch using the control signal to select an output from one of the high-resolution circuitry and the reduced-resolution circuitry; and providing an analog signal. - View Dependent Claims (19, 20, 21, 22, 23, 24)
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25. A method for controlling an operating range, comprising:
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receiving a digital signal by a digital-to-analog converter and an operating range controller; determining, by the operating range controller, whether the digital signal corresponds to a designated operating range; and adjusting, by the operating range controller, the operating range of a voltage-controlled oscillator if the digital signal does not correspond to the designated operating range. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34)
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35. A computer-program product for controlling an operating range comprising a non-transitory tangible computer-readable medium having instructions thereon, the instructions comprising:
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code causing an operating range controller to determine whether a digital signal corresponds to a designated operating range; and code for causing the operating range controller to adjust the operating range of a voltage-controlled oscillator if the digital signal does not correspond to the designated operating range. - View Dependent Claims (36, 37, 38, 39)
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40. An apparatus for converting a digital signal into an analog signal, comprising:
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means for receiving a digital signal; means for decoding the digital signal to produce a control signal; means for providing a voltage to high-resolution circuitry and reduced-resolution circuitry; means for controlling a switch using the control signal to select an output from one of the high-resolution circuitry and the reduced-resolution circuitry; and means for providing an analog signal. - View Dependent Claims (41, 42)
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43. An apparatus for controlling an operating range, comprising:
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means for receiving a digital signal; means for determining whether the digital signal corresponds to a designated operating range; and means for adjusting an operating range of a voltage-controlled oscillator if the digital signal does not correspond to the designated operating range. - View Dependent Claims (44, 45, 46)
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Specification