DAC SPI: How to Make a Positive/Negative Power Supply
·978 words·5 mins·
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Several methods for generating ±5 V rails were evaluated, ranging from dual wall warts to regulator-based and buck-boost solutions, with stability, noise, and grounding complexity as the main trade-offs. The most practical approach for the DAC setup proved to be regulator-based supplies, while more complex configurations offered little benefit and higher power consumption.