Analog-digital converter and method
AssigneeSTMicroelectronics International N.V.
InventorsFrançois Tailliet, Marc Battista
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Abstract
A method for controlling an analog-digital converter comprising first and second oscillators, and first and second elements, the method comprising a first step during which the first and second oscillators generate frequencies depending on an electrical characteristic of the first element and of the second element, respectively, and a second step during which the first and second oscillators generate frequencies depending on the electrical characteristic of the second element and of the first element, respectively.
Claims20
A method for controlling an analog-digital converter comprising first and second oscillators and first and second elements, the method comprising:
- generating, in a first step by the first and second oscillators, frequencies depending on an electrical characteristic of the first element and of the second element, respectively;
- and
- generating, in a second step by the first and second oscillators, frequencies depending on the electrical characteristic of the second element and of the first element, respectively;
- the electrical characteristic of the first element being sensitive to variations of a physical quantity, and the electrical characteristic of the second element being insensitive or inversely sensitive to the variations of the physical quantity.
An analog-digital converter comprising:
- first and second elements;
- and
- first and second oscillators, wherein the first and second oscillators are configured to:
- generate, during a first step, frequencies depending on an electrical characteristic of the first element and of the second element, respectively;
- and
- generate, during a second step, frequencies depending on the electrical characteristic of the second element and of the first element, respectively;
- wherein the electrical characteristic of the first element is sensitive to variations of a physical quantity, and the electrical characteristic of the second element is insensitive or inversely sensitive to the variations of the physical quantity.
An analog-digital converter comprising:
- first and second sensors;
- first and second oscillators, wherein the first and second oscillators are configured to:
- generate, during a first step, frequencies depending on an electrical characteristic of the first sensor and of the second sensor, respectively;
- and
- generate, during a second step, frequencies depending on the electrical characteristic of the second sensor and of the first sensor, respectively;
- and
- a first counter configured to:
- during the first step, count first oscillations of the first oscillator;
- and
- during the second step, count first oscillations of the second oscillator;
- and
- a second counter configured to:
- during the first step, count second oscillations of the second oscillator;
- and
- during the second step, count second oscillations of the first oscillator;
- wherein the electrical characteristic of the first sensor is sensitive to variations of a physical quantity, and the electrical characteristic of the second sensor is insensitive or inversely sensitive to the variations of the physical quantity.
Dependencies are inferred from the claim text.