Temperature sensor capable of determining whether to convert reference voltage to voltage digital code based on condition, and devices having the same

A system on chip (SoC) comprising:

• local temperature sensors configured to generate local temperature signals;
• and
• a temperature sensor connected to the local temperature sensors, wherein the temperature sensor includes:
• a main temperature sensor configured to generate a main temperature signal,
• a first selection circuit configured to output both a selected temperature signal among the local temperature signals and the main temperature signal in response to a selection code,
• a reference voltage generator configured to generate a reference voltage,
• a control circuit configured to generate a control signal,
• a second selection circuit configured to:
• output both the reference voltage and the selected temperature signal in response to the control signal indicating that a voltage conversion condition is satisfied;
• and
• output only the selected temperature signal in response to the control signal indicating that the voltage conversion condition is not satisfied, and
• a converter configured to:
• convert both the reference voltage to a voltage digital code and the selected temperature signal to a temperature digital code in response to the control signal indicating that the voltage conversion condition is satisfied;
• and
• convert only the selected temperature signal to the temperature digital code in response to the control signal indicating that the voltage conversion condition is not satisfied.

A temperature sensor comprising:

• a control circuit that generates a first control signal;
• and
• a converter that converts:
• both a reference voltage to a voltage digital code and a temperature signal to a temperature digital code in response to the first control signal, and
• only the temperature signal to the temperature digital code in the absence of the first control signal.