Delta sigma modulator
AssigneeTexas Instruments Incorporated
InventorsAmit Kumar Gupta, Peng Cao
Life of this patent
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Abstract
A delta-sigma modulator includes a first amplifier having an input, a feedback control input, and an output. The input is a first input of the delta-sigma modulator. The delta-sigma modulator further includes a first integrator and a first quantizer. The first integrator has an input and an output. The output of the first amplifier is coupled to the input of the first integrator. The first quantizer has an input and an output. The output of the first quantizer is coupled to the feedback control input of the first amplifier.
Claims28
A delta-sigma modulator, comprising:
- a first input of the delta-sigma modulator;
- a first integrator having an input and an output;
- a first amplifier coupled between the first input of the delta-sigma modulator and the input of the first integrator;
- a second input of the delta-sigma modulator;
- a second integrator having an input and an output;
- and
- a second amplifier coupled between the second input of the delta-sigma modulator and the input of the second integrator.
A delta-sigma modulator, comprising:
- a first amplifier having an input, a feedback control input, and an output, the input being a first input of the delta-sigma modulator;
- a first integrator having an input and an output, the output of the first amplifier coupled to the input of the first integrator;
- a first quantizer having an input and an output, the output of the first quantizer coupled to the feedback control input of the first amplifier;
- a second integrator having an input and an output;
- and
- a second amplifier having an input, a feedback control input, and an output, the output of the second amplifier coupled to the input of the second integrator.
A delta-sigma modulator, comprising:
- a first integrator having an input and an output;
- a first quantifier having an input and an output, the output of the first integrator coupled to the input of the quantizer, the first integrator and the quantizer forming a first control loop;
- a first amplifier included within the first control loop of the delta-sigma modulator;
- wherein the first amplifier includes an input comprising a first input of the delta-sigma modulator, and the delta-sigma modulator further comprising a second amplifier;
- wherein the second amplifier has an output coupled to the first integrator.
An analog-to-digital converter (ADC) comprising:
- delta-sigma modulator comprising:
- a first input of the delta-sigma modulator;
- a first integrator having an input and an output;
- a first amplifier coupled between the first input of the delta-sigma modulator and the input of the first integrator;
- a second input of the delta-sigma modulator;
- a second integrator having an input and an output;
- and
- a second amplifier coupled between the second input of the delta-sigma modulator and the input of the second integrator.
A An analog-to-digital converter (ADC) comprising:
- delta-sigma modulator, the delta-sigma modulator comprising:
- a first amplifier having an input, a feedback control input, and an output, the input being a first input of the delta-sigma modulator;
- a first integrator having an input and an output, the output of the first amplifier coupled to the input of the first integrator;
- a first quantizer having an input and an output, the output of the first quantizer coupled to the feedback control input of the first amplifier;
- a second integrator having an input and an output;
- and
- a second amplifier having an input, a feedback control input, and an output,
- the output of the second amplifier coupled to the input of the second integrator.
Dependencies are inferred from the claim text.