文档介绍：pact High-Accuracy Rail-to-Rail CMOS
Operational Amplifier
X. Y. Wang, L. Yu, L. Wang
Institute of Biomedical Engineering and Health Technology
Shenzhen Institute of Advanced Technology Chinese Academy of Science
Shenzhen, P. R. China
wang.******@siat.
Abstract—pact high-accuracy rail-to-rail mon source stage and prevent distortion at the presence of
operational amplifier (Op-Amp) is presented using strong high frequency signals by providing feedback from the
inversion techniques to achieve power consumption of mon source stage to the cascode stage. All these
under supply voltage. plementary differential pair implementations make output stage much plicated
techniques and one-versus-three current pensation and inevitably require larger chip area and more power
techniques are adopted to realize wide input dynamic range, pared with the conventional output stage. The
while the output stage provides rail-to-rail output drive through output stage including a simple Class-AB architecture with two
the use of pensation circuits (RCC) and self-regular self-tuning switches and resistors helps to achieve rail-to-rail
circuits (SRC). Simulation results demonstrated that the active output swing and enable us to configure the operational
area is only and the transconductance variation can be amplifier as unity gain buffer.
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