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DAC3152: 无输出

Part Number: DAC3152
dear sir or ms:您好!
最近我司应用DAC3152设计一款激光器,经过测量dac clk有 ,fpga出来的lvds数据有,但dac没有输出,
fpga输出的数据是oserdes 8:1,上升沿4bit+下降沿4bit组合而成,oserdes serclk 300M,对齐时钟1/4 serclk。
能帮忙分析一下是什么问题从那里查找原因。
做过下面的测试,A0167.RF_driver.pdfVDD 3.3V是3.25V,DVDD1.8V实际 1.76V,sleep 上拉100K.如能尽快解答不胜感激,谢谢!