Analogno-digitalna razširitvena plošča za programirljiva vezja

BUNDERŠEK, ROK (author), Trost, Andrej (mentor)

Razširitvena plošča z analogno-digitalnim vmesnikom omogoča prenos analognih signalov na vezje FPGA, kjer izvajamo digitalno obdelavo signalov. Razvili smo razširitveno ploščo z vezji za analogno-digitalno in digitalno-analogno pretvorbo. V vezju FPGA smo naredili logiko za krmiljenje pretvornikov in shranjevanje podatkov. Zajem signalov poteka preko serijskega perifernega vmesnika SPI (ang. Serial Peripheral Interface BUS) in je realiziran s pomočjo čipa MAX11105 (pretvornik analognega signala v digitalnega - ADC). Digitalni signal se shrani v programirljivo vezje FPGA podjetja Altera serije Cyclone IV, kjer se ga da modificirati in prebrati. Digitalni signal preko vmesnika SPI s čipom AD5451 (pretvornik digitalnega signala v analognega - DAC) prenesemo na izhod kot analogni signal. Izdelali smo prototipno razširitveno ploščo za testiranje in meritve in končno razširitveno ploščo, kjer smo vezje nadgradili. Dodali smo SMA konektor za priključitev na razširitveno ploščo s kablom in 2x6 PMOD konektor za priključitev tiskanega vezja na programirljivo vezje DE0-Nano. Pri meritvah smo na končni razvojni plošči dosegli malo manjše odstopanje vzorčenega signala in preizkusili odziv sistema na vhodni sinusni signal.

• Language: Slovenian
• Keywords: Vzorčenje, razširitvena plošča, vezje, DE0-Nano, programirljivo vezje, analogno-digitalni pretvornik, digitalno-analogni pretvornik.
• Work type: Bachelor thesis/paper
• Organization: FE - Faculty of Electrical Engineering
• Year: 2022
• PID: 20.500.12556/RUL-139375
• COBISS.SI-ID: 120017667
• Publication date in RUL: 01.09.2022

BUNDERŠEK, ROK, 2022, Analogno-digitalna razširitvena plošča za programirljiva vezja [online]. Bachelor’s thesis. [Accessed 15 April 2025]. Retrieved from: https://repozitorij.uni-lj.si/IzpisGradiva.php?lang=eng&id=139375

Secondary language

• Language: English
• Title: Analog-digital extension board for programmable devices

Abstract

Expansion board with Analog-digital interface enables transition of analog signals to the FPGA circuit where digital processing of signals is implemented. We developed an expansion board with circuits for analog-digital and digital-analog conversion. We made logic for controlling converters and saving data in an FPGA circuit. Data acquisition runs through the serial peripheral interface (SPI) and is realized with MAX11105 (which converts analog signal to digital - ADC) circuit. The digital signal is then saved in an FPGA circuit made by the Altera corporation, from the Cyclone IV series, which can be modified and read. The digital signal in transferred through the SPI interface with the AD5451 (which converts the digital signal the to analog - DAC) circuit on the output as an analog signal. We made a prototyping expansion board for testing and measurement and a final expansion board where we upgraded the circuit. We added an SMA connector for the ability to connect to the expansion board thruough a cable and a 2x6 PMOD connector for connecting the printed circuit to the programmable circuit DE0-Nano. During measurements on the final development board, we achieved minor deviation of sampled signal and tested the circuit response to the sine signal input.

• Keywords: Sampling, expansion board, circuit, DE0-Nano, programmable circuit, analog-digital converter, digital-analog converter.