A multi-stage amplifier is a frequency compensated via a single and small MOSFET based capacitor. The idea reduces die occupation considerably since removes any passive elements in the compensation network. Also, a normal differential pair and a MOSFET based capacitor form compensation network and boost DC gain simultaneously. The proposed approach is symbolically described via MATLAB and numerically simulated via HSPICE circuit simulator using standard TSMC 0.18µ CMOS technology. According to mathematical justifications and simulation results, the proposed amplifier shows operation excellency especially in terms of die occupation and frequency response parameters which make it appropriate choice to realize larger analog and mixed mode systems like modulators and data converters.

多级放大器是通过单个和小的基于MOSFET的电容器进行频率补偿的。由于消除了补偿网络中的任何无源元件，因此该想法大大减少了模具占用。同样，普通差分对和基于MOSFET的电容器形成补偿网络并同时提高DC增益。建议的方法通过MATLAB进行象征性描述，并使用标准TSMC 0.18µ CMOS技术通过HSPICE电路仿真器进行数值模拟。根据数学依据和仿真结果，所提出的放大器表现出了卓越的性能，特别是在芯片占用和频率响应参数方面，这使其成为实现较大的模拟和混合模式系统（如调制器和数据转换器）的合适选择。