Doubling-resolution analog-to-digital conversion based on PIC18F45K80

The Journal of Engineering

  ^{1    1} 

[1] The College of Mechanical Engineering, Dong Hua University, Shanghai 210620, People's Republic of China;

关键词: analogue-digital conversion;    microcomputers;    mathematical analysis;    printed circuits;    assembling;    doubling-resolution analogy-to-digital conversion;    analogy signal conversion;    microcomputer PIC18F45K80;    internal ADC module;    mathematical formula;    print circuit board assembly;    word length 13 bit;    word length 12 bit;   

DOI  :  10.1049/joe.2014.0161

来源: publisher

【 摘 要 】

Aiming at the analog signal being converted into the digital with a higher precision, a method to improve the analog-to-digital converter (ADC) resolution is proposed and described. Based on the microcomputer PIC18F45K80 in which the internal ADC modules are embedded, a circuit is designed for doubling the resolution of ADC. According to the circuit diagram, the mathematical formula for calculating this resolution is derived. The corresponding software and print circuit board assembly is also prepared. With the experiment, a 13 bit ADC is achieved based on the 12 bit ADC module predesigned in the PIC18F45K80.

【 授权许可】

CC BY