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首页> 外文期刊>Analog Integrated Circuits and Signal Processing >Body controlled threshold voltage shifting variable gain current mirror
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Body controlled threshold voltage shifting variable gain current mirror

机译：身体控制阈值电压移位变量增益电流镜

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摘要

A body controlled threshold voltage shifting scheme is proposed to realize a variable gain current mirror structure. The proposed structure utilizes the body terminals of MOS transistors to vary the threshold voltage and consequently the mirroring gain of current mirror structure. The application of this proposal is theoretically examined. A well-known low voltage cascode current mirror is used as a core element to realize a simple variable gain current mirror structure. The presented structure combines the transistor size switching method with body controlled threshold voltage shifting technique to achieve wide and smooth gain control range along with low power consumption. The circuits simulation results with TSMC 180 nm standard CMOS technology shows that the variable gain current mirror offers a linear-in-dB gain range of 19 dB with constant bandwidth of more than 93 MHz. The structure consumes less than 41.1 mu W from 1 V power supply.
机译：提出了一种体控阈值电压移位方案来实现可变增益电流镜结构。 所提出的结构利用MOS晶体管的主体端子来改变阈值电压并因此改变电流镜结构的镜像增益。 理论上检查了该提案的应用。 众所周知的低压级联电流镜用作核心元件，以实现简单的可变增益电流镜结构。 所提出的结构将具有体控阈值电压换档技术的晶体管尺寸切换方法组合到实现宽且平滑的增益控制范围以及低功耗。 具有TSMC 180 NM标准CMOS技术的电路仿真结果表明，可变增益电流镜具有19 dB的线性IN-DB增益范围，具有超过93 MHz的恒定带宽。 该结构从1 V电源消耗小于41.1μm。

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