Device for converting signal amplitude
A signal amplitude and conversion device technology, which is applied in the field of circuit devices, can solve the problems of unsatisfied requirements for amplification factor, weak control ability of output signal amplification factor, and unsatisfied requirements for controllable gain, etc.
Inactive Publication Date: 2008-01-02
ZTE CORP
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[0006] However, for the patent document CN200510092193, it discloses an automatic gain control circuit, that is to say, the gain of the output signal and the input signal will automatically change to meet the requirements of the output signal, but the Gain control requirements cannot be met
[0007] For the patent that the patent number is CN03219245, because the control of the program-controlled chip can only be divided into 5 levels of 1, 2, 4, 8, and 16 times, the magnification control ability of the output signal is relatively weak, and its magnification is fixed. 6, 7, 11, 1000 and other more random program-controlled magnification requirements cannot meet the requirements
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[0027] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.
[0028] The signal amplitude conversion device of the present invention, as shown in FIG. 1 , includes a signal preprocessing unit 101 , a control unit 102 , a D / A converter unit 103 , an output signal processing unit 104 and an instruction interface unit 105 . Wherein, the signal preprocessing unit 101 receives an external input signal, and outputs a reference voltage to the reference voltage input terminal of the D / A converter unit 103; the command interface unit 105 is connected to the control unit 102, and the The output of the control unit 102 is connected to the control interface of the D / A converter unit 103; the output of the D / A converter unit 103 is connected to the output signal processing unit 104, and is controlled by the output signal processing unit 104 output signal.
[0029] In the above-mentioned device of the present inventi...
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The invention discloses a converter of signal amplitude, comprising a signal preprocess signal, a controller, a D / A converter, an output signal processor, and a command interface unit, wherein the signal preprocess receives external input signal, to be converted and transmit signal to a reference voltage input of the D / A converter, the controller transmits a control signal to the D / A converter which output interface is connected with the output signal processor, the output signal processor processes the output signal of the D / A converter. The invention realizes multistage program-control increment control accurately, which can be used in electric signal control condition or electromechanical condition with multistage program control on the output signal amplitude.
Description
technical field [0001] The invention relates to a circuit device suitable for the field of electronic signal conversion and automatic control, specifically, a conversion device capable of program-controlling the output amplitude of any signal, mainly used in the field of electronic signal conversion and automatic control of electromechanical integration field. Background technique [0002] In the environment where the signal frequency is not very high in the electronic equipment and electronic control fields of the prior art, it is necessary to control the amplitude of a signal in many cases, especially in some electronic control fields, it is often necessary to scale the amplitude of the signal The control of the signal does not change the frequency, phase and other characteristics of the signal, that is, only the amplitude of the signal is changed. [0003] In terms of electronic machinery, it is equivalent to only changing the range of motion of the machine without chang...
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IPC IPC(8): H03G3/00H03G3/20
Inventor 张来喜朱红军周嵘郝磷
Owner ZTE CORP