一种模拟信号的处理方法及电路

• Format: Patent
• Language: Chinese
• Published: 14.10.2025
• Subjects: BASIC ELECTRONIC CIRCUITRY; CODE CONVERSION IN GENERAL; CODING; DECODING; ELECTRICITY

本发明提供一种模拟信号的处理方法及电路，在该电路中多个电压基准芯片中的任一电压基准芯片接入AD芯片的外部基准输入引脚，剩余电压基准芯片接入AD芯片的不同模拟输入引脚；数字信号处理电路向AD芯片发送同步采集信号，并接收AD芯片反馈的被测模拟信号转换后的数字信号和多路电压基准数字信号，由数字信号处理电路对多路电压基准数字信号进行有效性判断，并利用有效的电压基准数字信号确定的最终电压基准信号对所述数字信号进行自校准处理，得到被测模拟信号对应的转换数值。在本方案中，对多个低成本电压基准芯片提供的电压基准信号优化处理，利用优化后电压基准信号对被测模拟信号进行自校准，从而实现模拟信号的高精度处理的目的。 The invention provides an analog signal processing method and circuit. In the circuit, any one of a plurality of voltage reference chips is connected to an external reference input pin of an AD chip, and the remaining voltage reference chips are connected to different analog input pins of the AD chip; the digital signal processing circuit sends a synchronous acquisition signal to the AD chip, receives a digital signal converted from a tested analog signal fed back by the AD chip and a plurality of paths of voltage reference digital signals, and judges the validity of the plurality of paths of voltage reference digital signals; and carrying out self-calibration processing on the digital signal by utilizing a final v