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DAC7728: DAC上电复位值与理论值不符合

Part Number: DAC7728
Other Parts Discussed in Thread: LM1117

Vref为2.5v,USB引脚接地,采用直接二进制方式,电源AVDD=10v,AVSS=-10v,IOVDD=DVDD=3.3v;

当复位引脚rstsel接DGND,理论值应该为-7.5V,现在A通道为-3.18V,B通道为-6.44V;

当复位引脚rstsel接IOVDD,理论值应该为0V,现在A通道为10V,B通道为7.5V;