Fully Differential Folded Cascode An adaptive viral circuit coupled to a COMOS op amp circuit, a common-mode feedback circuit coupled to a fully differential cmos-op amp circuit, and a high-speed, low-voltage, low-power fully differential foldable cache Corde Moos Op Amp Circuit

摘要

The present invention's new adaptive bias circuit and a differential folded cascode CMOS OP AMP device using a common mode feedback circuit propose an adaptive bias circuit that can be attached to a conventional folded cascode CMOS OP AMP circuit so that a DC power consumption and a DC voltage gain It is possible to maximize the linear output voltage range of the entire OP AMP apparatus by increasing the range of the input voltage of the common mode feedback circuit, Using a high-voltage digital CMOS process, even with a single supply voltage of 4 V or less, the DC voltage gain is very large and has a fast stabilization time, so a CMOS OP AMP circuit for analog signal processing is added on the same integrated circuit chip together with a digital circuit for low voltage. To be able to do.