On-chip temperature sensor

Details On-chip temperature sensor On-chip temperature sensor

2011-07-12

2011-07-12

Nguyen, VanThu (Department: 2824)

Static information storage and retrieval

Read/write circuit

Differential sensing

C365S210120, C365S212000

Reexamination Certificate

active

07978556

ABSTRACT:
A temperature invariant reference voltage and a temperature variant physical quantity, such as a voltage or current, are generated. The temperature variant physical quantity changes in response to a temperature of the integrated circuit. A temperature sensor circuit generates a voltage that is linearly dependent on the temperature. A level generator circuit generates 2n−1 voltage levels from the reference voltage. A comparator circuit, such as an analog-to-digital circuit, compares the voltage from the temperature sensor to the 2n−1 voltage levels to determine which level is closest. An n-bit digital output of the resulting level is proportional to the temperature of the integrated circuit.

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patent: 2008/0137460 (2008-06-01), Incarnati et al.

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