Differential signal processing circuit

• Main Authors: ZHANG WUFENG, JIN XIAOYI, LI GUIJIAO, ZHANG JIAN
• Format: Patent
• Language: Chinese; English
• Published: 14.02.2020
• Subjects: BASIC ELECTRONIC CIRCUITRY; CODE CONVERSION IN GENERAL; CODING; DECODING; ELECTRICITY

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