Differential signal processing circuit
A technology for processing circuits and differential signals, applied in signal transmission systems, electrical signal transmission systems, electrical components, etc., can solve the problems of a large number of components, poor reliability, and large size, and achieve small circuit volume, low cost, and function. Unit clear effect
Pending Publication Date: 2020-02-14
SUZHOU R&D CENT OF NO 214 RES INST OF CHINA NORTH IND GRP
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Problems solved by technology
[0004] Disadvantages: Discrete components are used to realize circuit functions, and the number of components is large. Compared with integrated circuits, it is large in size, heavy in weight and poor in reliability.
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[0028] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.
[0029] Cooperate with the hardware principle block diagram that the present invention realizes as figure 1 shown. The circuit is mainly composed of a voltage conversion circuit unit, a primary amplifying circuit unit, a secondary amplifying circuit unit and a comparison output circuit unit. First, the voltage conversion circuit unit provides the center bias voltage VZ, the comparator reference upper limit voltage VH and the reference lower limit voltage VL; the first-stage amplifier circuit unit amplifies and converts the differential voltage signals V+, V- into a single signal VO1 with a center bias; The signal is reversely amplified by the secondary amplifying circuit unit to the secondary a...
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The invention discloses a differential signal processing circuit. A voltage conversion circuit unit provides a center bias voltage, a comparator reference upper limit voltage and a comparator reference lower limit voltage; the first-stage amplifying circuit unit amplifies and converts the differential voltage signal into a single-path signal with center bias; the second-stage amplification circuitunit reversely amplifies the single-path signal into a second-stage amplification signal; and the comparison output circuit unit compares the secondary amplification signal with a reference upper limit voltage and a reference lower limit voltage, and outputs a detection signal according to different comparison results. According to the invention, a single power supply is adopted for power supply,only a power supply voltage VCC needs to be provided, and voltage conversion of a center bias voltage required by the interior of the circuit, a comparator reference upper limit voltage and a comparator reference lower limit voltage is realized through resistance voltage division; an amplifier, a resistor, a capacitor and other universal components are adopted, the circuit design is concise, functional units are clear, and parameters can be conveniently debugged by adjusting the resistor and the capacitor; the number of components is small, the circuit volume is small, the weight is light, the cost is low, and circuit miniaturization is realized.
Description
technical field [0001] The invention relates to a differential signal processing circuit, which belongs to the technical field of circuits. Background technique [0002] The traditional differential signal processing circuit is composed of discrete components such as field effect transistors and resistors, and the design is relatively complicated. [0003] Differential signal detection device, patent number: 201210441811.6, publication number 102944714B. The invention patent belongs to the field of signal detection and relates to a differential signal detection device. It includes a first-stage amplifier and a pre-receiver and a final-stage amplifier respectively connected to the secondary amplifier, and the final-stage amplifier is also connected to a signal output device; the pre-receiver receives two differential signals and a reference threshold voltage input from the outside, And perform differential conversion on the two differential signals; the secondary amplifier ...
Claims
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Login to View More IPC IPC(8): H03M1/52
CPCH03M1/52
Inventor 金肖依张剑张武凤李贵娇
Owner SUZHOU R&D CENT OF NO 214 RES INST OF CHINA NORTH IND GRP