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DAC38RF84复位脚异常

Other Parts Discussed in Thread: DAC38RF84

在使用DAC38RF84过程中出现复位脚异常现象。该复位脚外接1只阻值为1K的上拉电阻,上拉电阻另一端与1.8V电压相接。具体异常现象为:在DA芯片上电后用万用表测量复位脚电压,电压值为0.3V(理论值为1.8V);在用FPGA控制IO向该复位脚输入1.8V高电平时,用万用表测量复位脚电压,电压值为1.0V(理论值为1.8V)。因复位脚一直处于复位状态,该芯片一直不能工作。希望各位能够就此现象帮忙分析一下,并提供解决措施。谢谢!