基于复合电池的低压CMOS跨导电池

A. Nabavi, M.A. Mansouri Birjandi, M. Jalali
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引用次数: 1

摘要

本文提出了一种基于CMOS平方律复合电池的低压CMOS运算跨导放大器电路设计新技术。该单元是实现低电压条件下低功耗精确信号处理的主要模块。该电池的两对并联连接,以实现轨对轨输入电压范围。每对的跨导都可以通过偏置电压固有地调谐。通过对这些偏置电压施加合适的值来控制恒定的g/sub /特性,从而保持对输入共模电压变化的平滑响应。HSPISE仿真表明,在2.5 V电源电压下,整体跨导线性度优于6%。
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Low-voltage CMOS transconductance cell based on composite cells
This paper describes a novel circuit design technique for low-voltage CMOS operational transconductance amplifiers (OTA) based on CMOS square-law composite cells. This cell is used as a main building block to achieve accurate signal processing with low-power dissipation under low-voltage condition. Two pairs of this cell are connected in parallel to achieve rail-to-rail input voltage range. The transconductances of each pairs are inherently tunable by a biasing voltage. The constant-g/sub m/ characteristic is controlled by applying suitable values to these biasing voltages maintaining the smooth response over the change of input common mode voltage. HSPISE simulations show that the overall transconductance has linearity better than 6 percent with 2.5 V supply voltage.
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