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US 9,710,007 B2Granted
Integrated circuit capable of providing a stable reference current and an electronic device with the same
AssigneeALi Corporation
InventorsHsu-Che Nee, Liang-Hsin Chen, Yi-Hsien Cheng
Life of this patent
Estimating the term…
Abstract
An electronic device and an integrated circuit thereof are provided. The integrated circuit includes a voltage generator and a current generator with a negative temperature coefficient. The voltage generator generates a reference voltage proportional to an absolute temperature based on a predetermined value. The current generator with the negative temperature coefficient receives the reference voltage and generates a reference current based on the reference voltage.
Claims16
An integrated circuit, comprising:
- a voltage generator, generating a reference voltage proportional to an absolute temperature based on a predetermined value;
- and
- a current generator with a negative temperature coefficient, receiving the reference voltage and comprising an impedance element with a positive temperature coefficient, the current generator generating a reference current, which is independent of temperature, based on the impedance element and the reference voltage between two ends of the impedance element, wherein a data transmission interface is connected to the current generator and generates an output voltage by using the reference current from the current generator, the integrated circuit receives the output voltage and adjusts trimming data according to the output voltage, and the voltage generator adjusts the reference voltage according to the trimming data to calibrate the reference current.
An electronic device, comprising:
- an integrated circuit, comprising:
- a voltage generator, generating a reference voltage proportional to an absolute temperature;
- and
- a current generator with a negative temperature coefficient, receiving the reference voltage and comprising an impedance element with a positive temperature coefficient, the current generator generating a reference current, which is independent of temperature, based on the impedance element and the reference voltage between two ends of the impedance element;
- and
- a data transmission interface, connected to the current generator and generating an output voltage by using the reference current from the current generator, wherein the integrated circuit receives the output voltage, the integrated circuit adjusts trimming data according to the output voltage and calibrates the reference current by using the adjusted trimming data, and the output voltage of the data transmission interface is adjusted to a basis voltage in response to calibration of the reference current.
3 more elements
Dependencies are inferred from the claim text.