A CMOS current operational amplifier (COA) which can be operated from a minimum supply voltage of V/sub T/+3V/sub DS,SAT/ is presented. Unlike previous low-voltage solutions operating in class A, the proposed one employs a class AB input stage that enhances slew-rate performance and provides accurate control of both quiescent currents and input bias voltage. A design example is implemented in a 0.5 /spl mu/m standard technology using a 1 V supply. It exhibits a 56 dB loop gain with a gain-bandwidth product of 18 MHz. Good linearity and noise performance are also achieved.
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机译：提出了一种可以在最小电源电压V / sub T / + 3V / sub DS，SAT /下工作的CMOS电流运算放大器（COA）。与以前以A类运行的低压解决方案不同，所提议的解决方案采用AB类输入级，该输入级可提高压摆率性能，并提供对静态电流和输入偏置电压的精确控制。一个设计示例是使用1 V电源以0.5 / spl mu / m的标准技术实现的。它具有56 dB的环路增益，增益带宽积为18 MHz。还可以实现良好的线性度和噪声性能。
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