Design of a Domestic Multichannel High Precision Signal Source Based on B9764
A multi-channel high-precision source based on B9764 is designed to facilitate the localization of multi-channel high-precision signal sources.A domestic FPGA chip of FMK50 is used as the main controller to control the signal output of the B9764 chip,and the DAC output signal is implemented with 96 output channels through six 16-channel high-speed analog switches and sampling and holding circuits.The self-testing circuit is designed using an FPGA ADC combined with analog switches to collect and calibrate the output signal,enabling high-precision output signal source and closed-loop detection.After many tests,the source is able to reliably output a tunable 0 to 5 V voltage signal based on complete localization,with output voltage accuracy better than 0.15%of the full scale,and self-test circuit ac-quisition accuracy better than 0.1%of the full scale.The design has a good feasibility and a wide range of applications.
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维普
