internal typical 0.02% accuracy measurement error and typical 10ppm temperature drift ADC chip.The performance is better than MCP3421.In order to ensure the accuracy of the current sampling,use a high quality typical temperature drift of 20ppm 3W power rate sampling resistance .UP to 0.01% reading error.
While guaranteed accuracy, fast speed sampling,each 10mS gather the voltage and current data, 10 times faster than the other manufacturers high-speed sampling to test the power supply's output ripple, response speed,noise and other data.