Methods and apparatus to trim temperature sensors
AssigneeTexas Instruments Incorporated
InventorNathan Richard Schemm
Life of this patent
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Abstract
Methods, apparatus, systems and articles of manufacture to trim temperature sensors are disclosed. An example method includes: sampling a first value indicative of a temperature of a first die of a multi-chip module (MCM) with a first temperature sensor, the first die including a first transistor having a channel including a first material; and calibrating a second temperature sensor configured to sample a second value indicative of a temperature of a second die including a second transistor have a second channel including a second material, the calibrating based on the first value.
Claims20
A system comprising:
- a first die including:
- a temperature indicator including a resistance indicative of a temperature of a first transistor, wherein the first transistor includes a first channel of a first material;
- and
- a second die including:
- a first calibrator configured to be adjusted;
- a first temperature sensor coupled to the first calibrator, the first temperature sensor configured to sample a value indicative of a temperature of a second transistor, wherein the second transistor includes a second channel of a second material;
- a second calibrator configured to be adjusted;
- and
- a second temperature sensor coupled to the second calibrator and the temperature indicator, the second temperature sensor configured to sample a second sample a value indicative of a temperature of the first die based on the temperature indicator.
A module comprising:
- a first integrated circuit including:
- a first temperature indicator including a first transistor having a control terminal and a second transistor having a control terminal coupled to the control terminal of the first transistor;
- a first temperature sensor coupled to the first temperature indicator;
- a first calibrator coupled to the first temperature sensor;
- a second temperature sensor including:
- a third transistor having a control terminal, a first current terminal, and a second current terminal;
- a fourth transistor having a control terminal coupled to the control terminal of the third transistor;
- and
- an amplifier having a first input, a second input coupled to the first current terminal of the third transistor, and an output coupled to the control terminal of the third transistor and the control terminal of the fourth transistor;
- and
- a second calibrator including an input coupled to the second current terminal of the third transistor, and an output coupled to the first input of the amplifier of the second temperature sensor;
- and
- a second integrated circuit including a second temperature indicator coupled to the second temperature sensor.
Dependencies are inferred from the claim text.