A high gain amplifier using a cascading architecture

High gain amplifiers with fast settling times are needed for high-speed data converter applications. Cascading amplifiers is generally a good way to achieve the desired open loop gain however; stability and settling speed become a concern. A cascading architecture that is inherently stable and maintains good settling performance was previously discussed. In this paper, a transistor level three stage implementation is presented that achieves over 100 dB of gain while maintaining good settling performance.