改进的电源抑制线性稳压器

摘要：在便携式通信，低压差线性稳压器（LDO）产生的射频电路的电源电压，这些电压供电时，必须是干净的合成器和压控振荡器（VCO） 。供应调节，权力往往包括宽带AC纹波的直流叠加。 LDO的预期拒绝这些文物。本文介绍了三种方法改善LDO的电源抑制比（PSRR） 。

Maxim > Design support > App notes > Filter Circuits (Analog) > APP 883
Maxim > Design support > App notes > Power-Supply Circuits > APP 883

Keywords: power supply rejection ratio, PSRR, low drop out regulator, LDOs, linear regulators, dampening, filter, noise, voltage
control oscillator, VCO, line regulation, quiescent current
Oct 01, 2002
APPLICATION NOTE 883
Improved Power-Supply Rejection for Linear Regulators
Abstract: In portable communications, low-dropout linear regulators (LDOs) generate supply voltages for the RF circuitry; these
voltages must be especially clean when powering the synthesizer and voltage-controlled oscillator (VCO). The supply that powers