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Sensor weak voltage signal processing circuit

A signal processing circuit and weak voltage technology, which is applied in the field of microelectronics, can solve problems such as complex circuits and difficult integration, and achieve the effect of simple circuit structure and meeting design requirements

Pending Publication Date: 2022-05-27
广科知微(广东)传感科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a sensor weak voltage signal processing circuit for the deficiencies of the prior art, which solves the problem that the current polarity conversion circuit is basically a board-level circuit, which is not easy to integrate and has complicated circuits

Method used

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  • Sensor weak voltage signal processing circuit
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  • Sensor weak voltage signal processing circuit

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Effect test

Embodiment 1

[0045] The signal processing unit of this embodiment is as follows figure 1 As shown, the circuit structure diagram of the weak voltage signal processing circuit is as follows figure 2 shown. In this embodiment, the transistor N1 is a double-gate thin film transistor, and the transistor N2 is a single-gate thin film transistor. The connection relationship is as follows.

[0046] The gate of the transistor N1 is connected to a signal output terminal of the sensor. That is, the gate of transistor N1 inputs a weak signal V SIGNAL . The drain of transistor N1 is input with power supply signal V DD, the source of the transistor N1 is connected to the drain of the transistor N2, and the connection terminal of the source of the transistor N1 and the drain of the transistor N2 is used as the output terminal of the signal processing unit. The gate of the transistor N2 is connected to its drain, the source of the transistor N2 is connected to another signal output terminal of the...

Embodiment 2

[0059] like Figure 13 As shown, the difference between this embodiment and the first embodiment is that the positions of the transistor N1 and the transistor N2 of the signal processing unit are interchanged. The specific circuit connection relationship of the signal processing unit is as follows.

[0060] When the positions of the transistor N1 and the transistor N2 are interchanged, the drain of the transistor N2 inputs the power supply signal V DD , its gate and source are connected and used as the output terminal of the signal processing unit. The drain of the transistor N1 is connected to the output terminal of the signal processing unit, the gate of the transistor N1 is connected to an output terminal of the sensor, and the drain is grounded. The control terminal of the transistor N1 inputs the control signal V CON .

[0061] Although the connection relationship between the two transistors of the signal processing unit in this embodiment is different after the posit...

Embodiment 3

[0063] like Figure 14 As shown, the signal processing unit of this embodiment adopts two single-gate thin film transistors. Therefore, it is different from the signal processing unit of the first embodiment in that the signal processing unit of this embodiment does not need to input the control signal V CON . That is, during the working process of the signal processing unit, when it receives the weak signal V SIGNAL After that, the weak signal V can be SIGNAL conversion is performed without the control signal V as in the first embodiment CON control.

[0064] Because the structure of the signal processing unit of this embodiment is simpler, it can be applied to some sensor circuits that do not require high control.

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Abstract

The invention discloses a weak voltage signal processing circuit for a sensor, relates to a microelectronic technology, and solves the technical problems that a current polarity conversion circuit is basically a board-level circuit, is not easy to integrate and is complex. Comprising a signal processing unit and a dynamic random storage unit, the signal processing unit is mainly composed of a plurality of electronic components suitable for an integrated circuit technology, and the signal processing unit is used for carrying out following conversion on collected weak signals so as to obtain and output unipolar signals; and the dynamic random storage unit is used for storing and outputting the unipolar signal. According to the invention, the circuit structure is simple, high integration and miniaturization of the signal processing circuit of the sensor are realized, and the design requirements of wearable equipment are met.

Description

technical field [0001] The present invention relates to microelectronic technology, more particularly, it relates to a sensor weak voltage signal processing circuit. Background technique [0002] With the advancement of 5G, AI, and IoT technologies, wearable devices have attracted more and more attention. What is very different from traditional hardware devices is that the application of wearable devices needs to meet the requirements of portable, mobile, wearable and remote applications, which puts forward more stringent requirements for sensors and their signal processing. Therefore, sensor hardware with high integration, small size, low power consumption, low cost and flexibility will become an increasingly critical element in the development of wearable devices in the future. [0003] In the process of using sensors to obtain accurate and reliable information, the signal processing circuit is an important part of a sensor system. Some sensors that convert physical para...

Claims

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Application Information

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IPC IPC(8): H03M1/12
CPCH03M1/124Y02D10/00
Inventor 王凯李惠敏
Owner 广科知微(广东)传感科技有限公司
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