Low-Power Integrated-Circuit Signal Processor With Wide Dynamic Range
OwnerGary Hebert, Frank Thomasinventors
Life of this patent
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Abstract
An integrated circuit includes at least three separate power supply terminals, at least one for those portions of the circuit that must accommodate the widest signal-related voltage excursion, at least one for those that experience substantially smaller signal-related voltage excursions, and a common terminal.
Claims26
An integrated circuit containing at least one analog circuitry section for producing a final analog output information signal in response to a first analog input information signal, comprising:
- a first analog circuitry subsection that produces an intermediate analog output voltage in response to said first analog input information signal;
- a second analog circuitry subsection that accepts an intermediate analog input current proportional to said intermediate output voltage and produces said final output information signal in response to said intermediate analog input current;
- a first power-supply-voltage terminal coupled to said first analog circuitry subsection;
- a second power-supply-voltage terminal coupled to said second analog circuitry subsection;
- and
- a third power-supply-voltage terminal coupled to said first analog circuitry subsection and said second analog circuitry subsection;
- wherein the available dynamic range of said intermediate analog output voltage is designed to exceed the difference in voltage applied between said second and third power-supply terminals.
An integrated circuit containing at least one analog circuitry section for producing a final analog output information signal in response to a first analog input information signal, comprising:
- a first analog circuitry subsection that produces an intermediate analog output voltage in response to said first analog input information signal;
- a second analog circuitry subsection that accepts an intermediate analog input current proportional to said intermediate output voltage and produces said final output information signal in response to said intermediate analog input current;
- a first positive power-supply-voltage terminal coupled to said first analog circuitry subsection;
- a second positive power-supply-voltage terminal coupled to said second analog circuitry subsection;
- a first negative power-supply-voltage terminal coupled to said first analog circuitry subsection;
- and
- a second negative power-supply-voltage terminal coupled to said second analog circuitry subsection;
- wherein the available dynamic range of said intermediate output voltage is designed to exceed the difference in voltage between said second positive and second negative power-supply terminals.
An integrated circuit includes at least three separate power supply terminals, at least one for those portions of the circuit that must accommodate the widest signal-related voltage excursion, at least one for those that experience substantially smaller signal-related voltage excursions, and a common terminal.
An integrated circuit containing at least one analog circuitry section for producing a final analog output voltage in response to a first analog input information signal, comprising:
- a first analog circuitry subsection that produces an intermediate analog output current in response to said first analog input information signal;
- a second analog circuitry subsection that accepts an intermediate analog input current proportional to said intermediate output current and produces said final output voltage in response to said intermediate analog input current;
- a first power-supply-voltage terminal coupled to said first analog circuitry subsection;
- a second power-supply-voltage terminal coupled to said second analog circuitry subsection;
- and
- a third power-supply-voltage terminal coupled to said first analog circuitry subsection and said second analog circuitry subsection;
- wherein the available dynamic range of said final analog output voltage is designed to exceed the difference in voltage applied between said first and third power-supply terminals.
Dependencies are inferred from the claim text.