A high-performance low-power low-noise preamplifier working at 77K for IR detectors is designed by a single-ended folded-cascode structure and a MOS transistor operating in the linear region as feedback resistor.

• 利用single endedfolded cascode结构和MOS管工作在线性区做反馈电阻；实现了一种在77K工作的高性能低功耗、低噪声前置放大器.