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双极性权电阻网络DAC如图所示，图中模拟开关在D_i=0时，接向地线；D_i=1时，接向-8V。试填写输入D和输出电压V_o的真值表并说明该双极性DAC是正参考还是负参考？若要改变参考极性，电路应作哪些变化？

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What can be inferred based on the description of the comets center as a potato？

A. The comet has holes and bulbs like a potato.
B. The surface of the comet is too smooth to resemble a potato.
C. The comet is as smooth as people expected.
D. Some parts of the comet haven"t been smoothed.

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已知某DAC的最小分辨电压V_LSB=40mV，最大满量程输出电压V_FSR=10.2V，试求该电路输入二进制数字量位数n为多少？基准电压V_REF为多少？

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What are the suggestions that the tutor gave to Ana on her course settlement in the foundation year？[Clink on 2 answers. ]

A. She can only take six modules.
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电压激励型和电流激励型DAC有哪些差别？各适合于何种场合？

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双极性权电阻网络DAC如图所示，图中模拟开关在Di=0时，接向地线；Di=1时，接向-8V。试填写输入D和输出电压Vo的真值表并说明该双极性DAC是正参考还是负参考？若要改变参考极性，电路应作哪些变化？

What can be inferred based on the description of the comets center as a potato？

已知某DAC的最小分辨电压VLSB=40mV，最大满量程输出电压VFSR=10.2V，试求该电路输入二进制数字量位数n为多少？基准电压VREF为多少？

What are the suggestions that the tutor gave to Ana on her course settlement in the foundation year？[Clink on 2 answers. ]

电压激励型和电流激励型DAC有哪些差别？各适合于何种场合？

双极性权电阻网络DAC如图所示，图中模拟开关在D_i=0时，接向地线；D_i=1时，接向-8V。试填写输入D和输出电压V_o的真值表并说明该双极性DAC是正参考还是负参考？若要改变参考极性，电路应作哪些变化？

已知某DAC的最小分辨电压V_LSB=40mV，最大满量程输出电压V_FSR=10.2V，试求该电路输入二进制数字量位数n为多少？基准电压V_REF为多少？