A Highly Linear and Wide Input Range Four-Quadrant CMOS Analog Multiplier Using Active Feedback
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概要
- 論文の詳細を見る
Analog multipliers are one of the most important building blocks in analog signal processing circuits. The performance with high linearity and wide input range is usually required for analog four-quadrant multipliers in most applications. Therefore, a highly linear and wide input range four-quadrant CMOS analog multiplier using active feedback is proposed in this paper. Firstly, a novel configuration of four-quadrant multiplier cell is presented. Its input dynamic range and linearity are improved significantly by adding two resistors compared with the conventional structure. Then based on the proposed multiplier cell configuration, a four-quadrant CMOS analog multiplier with active feedback technique is implemented by two operational amplifiers. Because of both the proposed multiplier cell and active feedback technique, the proposed multiplier achieves a much wider input range with higher linearity than conventional structures. The proposed multiplier was fabricated by a 0.6µm CMOS process. Experimental results show that the input range of the proposed multiplier can be up to 5.6Vpp with 0.159% linearity error on VX and 4.8Vpp with 0.51% linearity error on VY for ±2.5V power supply voltages, respectively.
- （社）電子情報通信学会の論文
- 2009-06-01
著者
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INOUE Yasuaki
Graduate School of Information, Production and Systems, Waseda University
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Huang Zhangcai
Research Center Of Information Production And Systems Waseda University
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JIANG Minglu
Graduate School of Production, Information and Systems, Waseda University
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Jiang Minglu
Graduate School Of Information Production And Systems Waseda University
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Inoue Yasuaki
Graduate School Of Information Production And Systems Waseda University
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Inoue Yasuaki
Graduate School Of Ips Waseda University
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