Digital temperature sensing circuit
AssigneeSK hynix Inc.
InventorsChan Hui Jeong, Suk Hwan Choi
Life of this patent
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Abstract
The digital temperature sensing circuit includes a temperature voltage generator configured to generate a temperature voltage varying with a temperature in response to a first reference voltage, divide a supply voltage in response to a second reference voltage, and generate a high voltage and a low voltage, a code voltage generator configured to divide the second reference voltage based on the high voltage and the low voltage and output divided voltages having different voltage levels, and a mode selector supplied with the temperature voltage and the divided voltages, and configured to output a first code or a second code in response to a mode select signal, wherein the first code and the second code have different numbers of bits.
Claims16
A digital temperature code output circuit, comprising:
- a temperature voltage generator configured to operate in response to a first reference voltage, a second reference voltage and a trimming code, to generate a temperature voltage varying with a temperature by comparing the first reference voltage and a sub-voltage which is internally generated and inversely proportional to the temperature, and to generate a high voltage and a low voltage by dividing a supply voltage in response to the second reference voltage;
- a code voltage generator configured to output code voltages having different voltage levels between the high voltage and the low voltage by dividing the second reference voltage;
- and
- a mode selector configured to receive the temperature voltage and the code voltages, and to generate a first code or a second code, by using the temperature voltage and the code voltages, in response to a mode select signal,
- wherein the first code and the second code have different numbers of bits.
Dependencies are inferred from the claim text.