Design and Implementation of a Smart AC Current Source for Impedance Spectroscopy Using ARM Microcontrollers
This paper explores the development of a low-cost alternating current (AC) smart current generator using ARM Cortex-M33 microcontrollers with integrated peripherals, Digital to Analog Converters (DAC) and Operational amplifiers (OPAMPS). The system generates an AC voltage signal through the DAC, whi...
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| Veröffentlicht in: | Electronics (Basel) 2024-12, Vol.13 (23), p.4805 |
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| creator | Meléndez Muñoz, Salvador Silvestre Mérida, Emilio Fernández Scagliusi, Santiago J Oprescu, Andreea M Algarín Pérez, Antonio Pérez García, Pablo |
| description | This paper explores the development of a low-cost alternating current (AC) smart current generator using ARM Cortex-M33 microcontrollers with integrated peripherals, Digital to Analog Converters (DAC) and Operational amplifiers (OPAMPS). The system generates an AC voltage signal through the DAC, which is then converted to an AC using integrated operational amplifiers and passive components. The proposed design provides a compact, low-power, cost-effective solution which is suitable for optimized embedded system sensor design. Results show a signal-to-noise ratio (SNR) of up to 70 dB and a total harmonic distortion (THD) as low as 0.2%, illustrating the potential for advanced sensing applications. |
| doi_str_mv | 10.3390/electronics13234805 |
| format | Article |
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| source | MDPI - Multidisciplinary Digital Publishing Institute; EZB-FREE-00999 freely available EZB journals |
| subjects | Alternating current Amplifiers (Electronics) Circuits Current sources Digital to analog converters Embedded systems Fourier transforms Harmonic distortion Microcontrollers Noise levels Operational amplifiers Passive components Power supply Signal to noise ratio Spectrum analysis Technology application Tomography |
| title | Design and Implementation of a Smart AC Current Source for Impedance Spectroscopy Using ARM Microcontrollers |
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