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采用TSMC0.35μm工艺参数,基于多输出端第二代电流传输器(MOCCⅡ)提出了一种新型CCⅢ电路,电路采用轨对轨的输入结构,有效地提高了信号摆幅;通过电路内部晶体管提供偏置,达到了减少芯片面积和降低功耗的目的。HSPICE仿真结果表明,在±1 V供电电压下,该CCⅢ的电压跟随误差为0.06 dB,-3 dB带宽为434.3 MHz;端口Y与X之间的电流跟随误差为0.06 dB,-3 dB带宽为381.2 MHz;端口Z+与X之间的电流跟随误差为0.02 dB,-3 dB带宽为334.1 MHz;端口Z-与X之间的电流跟随误差为0.05 dB,-3 dB带宽为665.8 MHz;整体电路的功耗为2.133 mW。据CCⅢ电路设计了一种电流模式带通二阶滤波器,结果与理论值较吻合。
A new type of CCⅢ circuit based on multi-output second-generation current transmitter (MOCCⅡ) is proposed based on TSMC0.35μm process parameters. The circuit adopts rail-to-rail input structure, which effectively improves the signal swing. Through the internal transistor of the circuit Bias, to reduce the chip area and reduce power consumption purposes. The results of HSPICE simulation show that the CCIII voltage follow-up error is 0.06 dB and the -3 dB bandwidth is 434.3 MHz at ± 1 V supply voltage. The current follow-up error between port Y and X is 0.06 dB and the -3 dB bandwidth is 381.2 MHz; current following error between port Z + and X is 0.02 dB and the -3 dB bandwidth is 334.1 MHz; the current following error between port Z and X is 0.05 dB and the -3 dB bandwidth is 665.8 MHz; the overall circuit The power consumption is 2.133 mW. According to CC Ⅲ circuit designed a current mode bandpass second-order filter, the result is consistent with the theoretical value.