Signal processing circuit

A signal processing circuit, a technology for inputting signals, applied in the field of communications, and can solve problems such as increased cost

Inactive Publication Date: 2017-04-19
MEDIATEK SINGAPORE PTE LTD SINGAPORE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, under the premise of ensuring the conversion accuracy in the existing methods, if it is expected to improve the accuracy of

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Embodiment Construction

[0020] The following descriptions are preferred embodiments for implementing the present invention. The following examples are only used to illustrate the technical characteristics of the present invention, and are not intended to limit the scope of the present invention. Certain terms are used throughout the specification and claims to refer to particular elements. It should be understood by those skilled in the art that manufacturers may use different terms to refer to the same element. The specification and claims do not use the difference in name as the way to distinguish components, but the difference in function of the components as the basis for the difference. The terms "element", "system" and "apparatus" used in the present invention may be a computer-related entity, where the computer may be hardware, software, or a combination of hardware and software. The terms "comprising" and "including" mentioned in the following description and claims are open terms, so they ...

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Abstract

The application provides a signal processing circuit comprising an amplifying module and an analog-to-digital conversion module. The amplifying module consists of a first input terminal for receiving an input signal, a second input terminal for receiving a reference signal, and an output terminal coupled to the analog-to-digital conversion module. The amplifying module amplifies the input signal and the reference signal and outputs an amplifying signal to the analog-to-digital conversion module through the output terminal; and the analog-to-digital conversion module carries out analog-to-digital conversion on the amplifying signal. A symbol of a first amplification coefficient for amplification on the input signal by the amplifying module is opposite to that of a second amplification coefficient for amplification on the reference signal by the amplifying module; and the voltage range of the amplifying signal is identical with the range of the analog-to-digital conversion module approximately. Therefore, the accuracy of analog-to-digital conversion can be improved; and costs can be lowered.

Description

technical field [0001] The present application relates to the technical field of communications, and in particular to a signal processing circuit. Background technique [0002] Generally, analog signals need to be converted from analog to digital in electronic devices, and then the processor performs subsequent operations based on the converted digital signals. Especially, when the analog signal to be converted is small, the small analog signal needs to be amplified. For example, in a common detection device or detection system, the detection signal output by the sensor measurement is usually small, such as about several hundred mV. Therefore, before the detection signal enters the processor, it needs to be amplified and the amplified The signal is converted from analog to digital to obtain the corresponding digital quantity. [0003] However, under the premise of ensuring the conversion accuracy in the existing methods, if it is desired to improve the analog-to-digital co...

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Application Information

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IPC IPC(8): H03M1/12
CPCH03M1/183H03M1/124H03F2203/45528G01K2217/00H03F3/45475H03F2203/45116G01K7/02H03M1/12
Inventor 施明陈讲重
Owner MEDIATEK SINGAPORE PTE LTD SINGAPORE
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