Passive charge redistribution digital-to-analogue multiplier
Passive charge redistribution digital-to-analogue multiplier
复制标题
无源电荷重新分配数模乘法器
DOI：
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复制
发表时间：
2015
期刊：
影响因子：
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通讯作者：
B. Murmann
中科院分区：
文献类型：
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作者：
Daniel Bankman;B. Murmann
提出了一种基于被动电荷共享和再分配原理的数模乘法器。电路产生一个与乘法器成比例的电压，然后通过放电与其逻辑逆相关联的电容，对该电压与乘法器成比例的电容进行采样。寄生电容显示导致相对于乘法器的输入参考偏移。将交换方案修改为空偏移量。仿真结果验证了该数模乘法器的工作原理。
A digital-to-analogue multiplier based on the principle of passive charge sharing and redistribution is proposed. The circuit generates a voltage proportional to the multiplier, then samples this voltage with a capacitance proportional to the multiplicand by discharging the capacitance associated with its logical inverse. Parasitic capacitances are shown to result in an input-referred offset with respect to the multiplier. The switching scheme is modified to null the offset. Simulation results are provided to verify the operation of the digital-to-analogue multiplier.