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Temperature sensors, circuit devices, oscillators, electronic equipment, and moving objects

A temperature sensor and circuit device technology, which is applied in the fields of temperature sensors, circuit devices, electronic equipment, moving bodies, and oscillators, and can solve the problems of unrecorded temperature detection voltage offset correction, etc.

Active Publication Date: 2022-05-06
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, in Patent Document 1, sensitivity correction of temperature detection voltage is described, but offset correction of temperature detection voltage is not described.

Method used

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  • Temperature sensors, circuit devices, oscillators, electronic equipment, and moving objects
  • Temperature sensors, circuit devices, oscillators, electronic equipment, and moving objects
  • Temperature sensors, circuit devices, oscillators, electronic equipment, and moving objects

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Embodiment Construction

[0024] Hereinafter, preferred embodiments of the present disclosure will be described in detail. In addition, the present embodiment described below does not unreasonably limit the contents described in the claims, and not all the configurations described in the present embodiment are essential constituent requirements.

[0025] 1. Oscillator, circuit device

[0026] Hereinafter, a case where a temperature sensor is used for temperature compensation of an oscillator will be described as an example, but the application target of the temperature sensor of the present disclosure is not limited thereto. For example, the temperature sensor of the present disclosure can be applied to a temperature sensor body. Alternatively, the temperature sensor of the present disclosure can be applied to a circuit device including a temperature sensor and a circuit that operates based on a temperature detection voltage from the temperature sensor.

[0027] figure 1 This is a configuration exam...

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Abstract

Provides temperature sensors, circuit devices, oscillators, electronic equipment, and moving bodies capable of correcting temperature detection voltage offsets with high precision with a simple circuit configuration. Temperature sensors consist of bipolar transistors, resistors, and variable resistor circuits. The resistor is provided between the first node connected to the base node of the bipolar transistor and the collector node of the bipolar transistor. The variable resistance circuit is provided between the emitter node and the ground node of the bipolar transistor.

Description

technical field [0001] The present invention relates to a temperature sensor, a circuit device, an oscillator, electronic equipment, a mobile body, and the like. Background technique [0002] A temperature sensor is known that utilizes the temperature characteristic of forward voltage in a PN junction of a semiconductor. As the forward voltage having temperature characteristics, for example, a base-emitter voltage of a bipolar transistor is used. [0003] The temperature sensor of Patent Document 1 includes a bipolar transistor connected in series, a first resistor, and a second resistor. A base node of the bipolar transistor is connected to a node between the first resistor and the second resistor, and a temperature detection voltage is output from a collector node of the bipolar transistor. Patent Document 1 discloses a configuration in which sensitivity correction of a temperature detection voltage is performed by changing a current flowing through a bipolar transistor....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01K15/00G01K7/16H03B5/32H03B5/04
CPCG01K15/005G01K7/16H03B5/32H03B5/326H03B5/04H03B5/366H03B2200/0038G01K7/01
Inventor 野宫崇泽田光章井伊巨树
Owner SEIKO EPSON CORP