Temperature sensor and circuit
AssigneeMelexis Technologies SA
InventorsTitouan Matheret, Carlos Velasquez, Arnaud Laville, Bertrand Coulon
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Abstract
A temperature sensor comprising at least one temperature sensing circuit. Each temperature sensing circuit comprise a series connection of a first connecting node, a first capacitor connected to a first reset transistor for biasing the first capacitor to a first bias voltage, a bias transistor for distributing charges between the first and second capacitor after biasing the first and second capacitor, a second capacitor connected to a second reset transistor for biasing the second capacitor to a second bias voltage, a second connecting node. Each temperature sensing circuit comprises at least one voltage readout node between the first capacitor and the second capacitor.
Claims15
A temperature sensor for measuring a temperature, the temperature sensor comprising at least one temperature sensing circuit, characterized in that each temperature sensing circuit comprises a series connection of:
- a first connecting node, connected with a first capacitor,
- the first capacitor connected to a first reset transistor for biasing the first capacitor to a first bias voltage,
- a bias transistor for distributing charges between the first and a second capacitor after biasing the first and the second capacitor,
- the second capacitor connected to a second reset transistor for biasing the second capacitor to a second bias voltage, wherein the bias transistor is arranged between the first capacitor and the second capacitor,
- a second connecting node, connected with the second capacitor, wherein the first connecting node and the second connecting node are configured for applying a supply voltage between the first and second connecting node,
- each temperature sensing circuit comprising at least one voltage readout node between the first capacitor and the second capacitor for outputting a voltage that is a temperature measurement.
Dependencies are inferred from the claim text.