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Temperature sensor arrangement, light sensor arrangement, mobile computing device including same and methods using same

A temperature sensor, light sensor technology, applied in thermometers, thermometers with analog-to-digital converters, thermometers with electrical/magnetic components directly sensitive to heat, etc., can solve the problem of inaccurate temperature values, additional changes, temperature measurement The circuit operating temperature is difficult to compensate and other problems to achieve the effect of accurate ambient light measurement and accurate temperature measurement

Pending Publication Date: 2021-06-29
AMS INT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the fabrication process used for IPTAT is subject to inherent process variations such that the fabricated temperature sensor device may require extensive calibration processing or the determined temperature values ​​may be less accurate
In addition, the operating temperature of the temperature measurement circuit may introduce additional variations that are difficult to compensate for

Method used

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  • Temperature sensor arrangement, light sensor arrangement, mobile computing device including same and methods using same
  • Temperature sensor arrangement, light sensor arrangement, mobile computing device including same and methods using same
  • Temperature sensor arrangement, light sensor arrangement, mobile computing device including same and methods using same

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Embodiment Construction

[0033] The present disclosure will be described more fully hereinafter with reference to the accompanying drawings that illustrate embodiments of the disclosure. However, this disclosure may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will fully convey the scope of the disclosure to those skilled in the art. The drawings are not necessarily drawn to scale, but rather are configured to clearly illustrate the present disclosure.

[0034] figure 1 The combined ambient light sensor (ALS) and temperature sensor device in FIG. The current integrating modulator 10 comprises an input terminal 11 to which the current to be integrated is supplied. This terminal 11 is connected to the input of the operational amplifier OPAMP. The amplifier OPAMP is configured as an integrator in which an integrating capacitor CF is connected between its negative input “−”...

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Abstract

A temperature sensor arrangement comprises a current integrating modulator (10) that provides a count value (ADC_COUNT) dependent on the current supplied to its input terminal (11). A temperature-sensitive element (20) includes a resistor (223) to generate a current dependent on temperature (IPTAT). First and second switches (31, 32) alternately connect the temperature-sensitive element (20) and another resistor (40) to the input terminal (11) of the current integrating modulator (10). The temperature sensor arrangement can be combined with an ambient light sensor sharing the current integrating modulator (10).

Description

technical field [0001] The present disclosure relates to a temperature sensor device. In particular, the present disclosure relates to a temperature sensor device comprising a current integrating modulator and a temperature sensitive element for generating a temperature dependent current. The present disclosure also relates to a light sensor device comprising a temperature sensor device and a photodiode for generating a photocurrent to be measured. The present disclosure also relates to a mobile computing device comprising light sensor means. The present disclosure also relates to a method of measuring temperature and to a method of measuring ambient light including a method of measuring temperature. Background technique [0002] Temperature sensors are widely used in electronic equipment to measure temperature and control the operation of the equipment based on the determined temperature. A temperature sensor generates a signal (such as a temperature-dependent current) t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J1/42G01J1/44G01J1/46G01J5/08G01K7/01
CPCG01J1/44G01J2001/444G01K7/01G01K2219/00G01J1/4204G01J2001/446G01K7/20G09G3/006G09G5/10G09G2320/041G09G2360/141G09G2360/144G01K7/16
Inventor 拉维·库马尔·阿杜苏姆阿利
Owner AMS INT
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