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DAC908使用图里的设计，其中R5 R6改为了150欧，将D0-D8接地，上电后两个电流输出电压都为3V
您好，
设备是否经历了R5 R6为300Ω时上过电？这有可能已损坏了设备；
您测试了几块设备是这种现象？看下面帖子E2E英文工程师的回复，DAC908的输出在上电时是不确定的，您尝试在D0~D7输入数字信号时对应的输出是否正常？
https://e2e.ti.com/support/data-converters-group/data-converters/f/data-converters-forum/333884/question-about-dac908e-of-power-on?tisearch=e2e-sitesearch&keymatch=DAC908#
