Fixed offset digital-to-analog conversion device and method
First Claim
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1. A device comprising:
- a current supply circuit to generate a plurality of control currents responsive to a corresponding plurality of digital signals;
an input voltage generating circuit to generate a plurality of input voltages responsive to the plurality of digital signals and control currents; and
a plurality of operational amplifiers to output a plurality of analog signals responsive to the plurality of input voltages.
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Abstract
I describe and claim an improved digital-to-analog conversion device and method. The device comprises a current supply circuit to generate a plurality of control currents responsive to a plurality of digital signals. An input voltage generating circuit is adapted to generate a plurality of input voltages responsive to the digital signals and the control currents. And a plurality of operational amplifiers is adapted to output a plurality of analog signals responsive to the input voltages.
25 Citations
23 Claims
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1. A device comprising:
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a current supply circuit to generate a plurality of control currents responsive to a corresponding plurality of digital signals;
an input voltage generating circuit to generate a plurality of input voltages responsive to the plurality of digital signals and control currents; and
a plurality of operational amplifiers to output a plurality of analog signals responsive to the plurality of input voltages. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A device comprising:
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a current supply circuit to generate a first control current responsive to a first digital signal, and a second control current responsive to a second digital signal;
an input voltage generating circuit to generate a first input voltage responsive to the first digital signal and the first control current, and a second input voltage responsive to the second digital signal and the second control current;
a first operational amplifier to output a first analog signal responsive to the first input voltage; and
a second operational amplifier to output a second analog signal responsive to the second input voltage. - View Dependent Claims (14, 15, 16, 17)
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18. A method comprising:
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generating a plurality of control currents responsive to a plurality of digital signals;
generating a plurality of input voltages responsive to the digital signals and the control currents; and
outputting a plurality of analog signals responsive to the input voltages. - View Dependent Claims (19, 20, 21, 22, 23)
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Specification