Temperature sensor in an integrated circuit having offset cancellation

A temperature sensor comprising:

• ramp generation circuitry including a ramp generator, the ramp generator including a first ramp output to provide a ramp signal and a second ramp output to provide a second ramp signal;
• pulse generation circuitry including:
• a first switch circuit including a first input coupled to the first ramp output, a second input coupled to receive a comparison voltage, a first output, and a second output, wherein in a first switch state, the first switch circuit provides a path between the first input and the first output and does not provide a path between the first input and the second output, wherein in the first switch state, the first switch circuit provides a path between the second input and the second output and does not provide a path between the second input and the first output, wherein in a second switch state, the first switch circuit provides a path between the second input and the first output and does not provide a path between the second input and the second output, wherein in the second switch state, the first switch circuit provides a path between the first input and the second output and does not provide a path between the first input and the first output;
• a comparator including a first input coupled to the first output of the first switch circuit and a second input coupled the second output of the first switch circuit;
• a second switch circuit including a first input coupled to the second ramp output, a second input coupled to receive the comparison voltage, a first output, and a second output, wherein in a first switch state, the second switch circuit provides a path between the first input and the first output and does not provide a path between the first input and the second output, wherein in the first switch state, the second switch circuit provides a path between the second input and the second output and does not provide a path between the second input and the first output, wherein in a second switch state, the second switch circuit provides a path between the second input and the first output and does not provide a path between the second input and the second output, wherein in the second switch state, the second switch circuit provides a path between the first input and the second output and does not provide a path between the first input and the first output;
• a second comparator including a first input coupled to the first output of the second switch circuit and a second input coupled the second output of the second switch circuit;
• an output, wherein during a temperature measurement operation, the comparison voltage is indicative of a measured temperature and the output of the pulse generation circuitry provides a pulse signal that is indicative of the measured temperature;
• wherein during a first phase of a temperature measurement operation, the first switch circuit and the second switch circuit are each in the first switch state and during a second phase of a temperature measurement operation, the first switch circuit and the second switch circuit are each in the second switch state;
• counter circuitry including an input coupled to the output of the pulse generation circuitry and including an output to provide a digital indication of the measured temperature during a temperature measuring operation, wherein the digital indication is based on pulses provided by the first comparator and the second comparator during the first phase and during the second phase of a temperature measurement operation.