MPSoC Configuration of Tunable Waveform Generator and Mixer for NEMS Excitation and Detection

Our goal is to design a cost-effective instrument to enable NEMS research in colleges with limited resources. For this purpose, we implement a design of a waveform generator and mixer with the Artix-7 FPGA on the Basys 3 Development Board and the Xilinx Zynq 7010 MPSoC on the RedPitaya DAQ Board. Our design is able to output sine waves in the range of 100 kHz to 100 MHz with a tuning accuracy of about 0.5 Hz. The design utilizes the RedPitaya's two 14 bit 125 Msps RF Analog to Digital Converters to mix waveforms and two 14 bit 125 Msps RF Digital to Analog Converters to generate waveforms. Waveforms can be tuned using IO on the RedPitaya. The speed and accuracy of our waveform generator and mixer is demonstrated. Our proposed design may be useful for other projects.