Low-voltage variable gain current amplifier for high-voltage signal processing

被引：0
|
作者：
Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8552, Japan [1 ]
不详 [2 ]
机构：
来源：
IEEJ Trans. Electron. Inf. Syst. | 2009年 / 8卷 / 1511-1517+10期
关键词：
Current amplifier - Drain-to-source voltages - High linearity - High-voltage signals - Input voltage signal - Low power supply voltage - Supply voltages - Triode region;
D O I：
10.1541/ieejeiss.129.1511
中图分类号：
学科分类号：
摘要：
In low power-supply voltage systems, the method converting the input voltage signals into current signals by a resistor is useful in case that the amplitude of input voltage signals is larger than the supply voltage. This paper proposes a variable gain current amplifier as a current mode processing interface. The proposed circuit uses MOSFETs operated in the triode region to obtain a controllable current gain. High linearity is achieved by fixing the drain-to-source voltage of the MOSFETs. The proposed circuit is simulated by HSpice to confirm its performance. © 2009 The Institute of Electrical Engineers of Japan.
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