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US 11,698,307 B2Granted
Methods and apparatus to trim temperature sensors
AssigneeTexas Instruments Incorporated
InventorNathan Richard Schemm
Life of this patent
Estimating the term…
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.
Claims7
An apparatus comprising:
- a first die including:
- a first transistor having a first channel including a first material;
- and
- a temperature coefficient resistor having a first terminal and a second terminal, the temperature coefficient resistor including a resistance dependent on a temperature of the first die;
- a second die including:
- a second transistor having a second channel including a second material;
- a variable current source including an output, a first input adapted to be coupled to an adjustment device, and a second input coupled to a voltage supply node;
- a first temperature sensor configured to measure a value indicative of a temperature of the second die;
- and
- a second temperature sensor including:
- a reference voltage coupled to the second terminal of the temperature coefficient resistor;
- an amplifier including an output and including a first input coupled to the output of the variable current source and the first terminal of the temperature coefficient resistor;
- and
- a third transistor including a first current terminal coupled to the voltage supply, a second current terminal coupled to an output voltage, and a control terminal coupled to the output of the amplifier;
- and
- a package including the first die and the second die.
13 more elements
Dependencies are inferred from the claim text.