Temperature sensor and method of detecting temperature

A temperature sensor, comprising:

• a plurality of temperature coefficient voltage generators, for generating a plurality of temperature coefficient voltages;
• one or more converters, coupled to the temperature coefficient voltage generators, configured to convert the temperature coefficient voltages to one or more digital values;
• and
• a variable voltage or current source, coupled to at least one of the temperature coefficient voltage generators and configured to output different voltages or currents, respectively, in a plurality of time periods.

A method of detecting a temperature, comprising:

• providing at least one voltage or current to generate a plurality of temperature coefficient voltages;
• and
• converting the temperature coefficient voltages to one or more digital values;
• wherein the step of providing at least one voltage or current to generate a plurality of temperature coefficient voltages comprises:
• providing a first voltage or current in a first time period, and providing a second voltage or current in a second time period, wherein the second voltage or current is different from the first voltage or current such that there exists a shift between a first voltage-temperature curve in the first time period and a second voltage-temperature curve in the second time period.