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DAC161S997: 器件由本地DCDC供电。如下原理图是否正确

Part Number: DAC161S997

本地电池由DCDC产生3.3V电源,给PCB上的MCU和DAC161S997供电。mcu的SPI端口直接和DAC161S997相连。下图的电路是否正确?能否达到我的预期?请尊敬的管理员能够回答下我的问题。很急!!!