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

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

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Aiming at the analog signal being converted into the digital with a higher precision, a method to improve the analog-to-digital converter (ADC) Back Brace 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 Ball - Accessories 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.