【摘要】 设计了一个共源共栅运算跨导放大器,并成功地将其应用在一款超低功耗LDO线性稳压器芯片中。该设计提高了电源抑制比(PSRR),并具有较高的共模抑制比(CMRR)。电路结构简单,静态电流低。该芯片获得了高达99 dB的电源抑制比。更多还原

【Abstract】 A cascode operational transconductance amplifier(OTA) is designed,which was integrated into an ultra-low power LDO regulator chip.Simulation shows that the power supply rejection ratio(PSRR) of the circuit has been greatly improved,and high common mode rejection ration(CMRR) has been achieved for the cascode OTA.With a simple structure,the circuit has a low quiescent current and the PSRR of the chip reaches up to 99 dB.更多还原