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Analog filter circuit

An analog filter and circuit technology, applied in the direction of frequency selection two-terminal pair network, multi-terminal pair network, etc., can solve the problems of analog waveform distortion and burrs, and achieve the effect of smooth system waveform and solve distortion and burrs

Inactive Publication Date: 2012-05-30
SHANGHAI CHENGJIA ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

During this transition, distortion and glitches of the analog waveform are often produced

Method used

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Embodiment Construction

[0016] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0017] see figure 1 , figure 1 It is the circuit schematic diagram of the analog filter circuit of the present invention. The analog filter circuit includes a bandpass filter 11, a DC blocking capacitor C 2 and inverting amplifier 12. The DC blocking capacitor C 2 It is connected between the output end of the bandpass filter 11 and the input end of the inverting amplifier 12 . The band-pass filter 11 is used for band-pass filtering the input signal. The DC blocking capacitor C 2 It is used to filter out the DC component in the output signal of the band-pass filter 11. The inverting amplifier 12 is used to keep the phase of the signal input to the analog filter circuit unchanged. Preferably, the DC blocking capacitor C 2 10u electrolytic capacitor.

[001...

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Abstract

The invention relates to an analog filter circuit, which comprises a band pass filter, a stopping condenser and an inverting amplifier, wherein the stopping condenser is connected between an output end of the band pass filter and an input end of the inverting amplifier; the band pass filter comprises a low pass filter branch, a high pass filter branch and a first amplifier; the low pass filter branch is connected in parallel with the high pass filter branch; and the low pass filter branch and the high pass filter branch are connected between an inverting input end and output end of the first amplifier. The analog filter circuit can solve the problems of distortion of an output analog signal and production of burrs.

Description

technical field [0001] The invention relates to an analog filter circuit, in particular to an analog filter circuit for signal simulation. Background technique [0002] In the production process of mass electronic control products, signal simulation is usually used to perform aging screening of various devices. Since the aging screening of devices is carried out under different temperature conditions, various functional signals with high precision and high purity are required. Since the generation of arbitrary function waveform signals in the prior art relies on digital signals, the digital signals are converted into analog signals. During this transition, distortion and glitches of the analog waveform are often produced. Contents of the invention [0003] The object of the present invention is to provide an analog filter circuit capable of avoiding output analog signal distortion and glitches. [0004] An analog filtering circuit includes: a bandpass filter, a DC block...

Claims

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Application Information

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IPC IPC(8): H03H11/12
Inventor 陈耀民陈立民蔡祖卫杨翰顾华
Owner SHANGHAI CHENGJIA ELECTRONICS TECH
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