Patent ID: 7816973

Claim:
A temperature dependent circuit comprising: a first current generator block configured to receive a temperature dependent signal and operable to generate a first signal based on the temperature dependent signal, the first current generator block having circuits configured to switch the configuration of the first current generator block between first and second configurations in response to a first control signal; a second current generator block, configured to receive the temperature dependent signal and operable to generate a second signal inversely proportional to the first signal based on the temperature dependent signal, the second current generator block having circuits configured to switch the configuration of the second current generator block between first and second configurations in response to a second control signal; a phase control circuit coupled to receive a clock signal and coupled to the first and second current generator blocks, the phase control circuit operable to generate the first and second control signals to switch the first and second current generator blocks between the respective first and second configurations after a time period; and an analog-to-digital converter (ADC) circuit coupled to the first and second current generator blocks and the phase control circuit, the ADC circuit configured to convert the first and second signals into digital temperature data and further configured to average digital temperature data for a plurality of time periods.