AMPLIFIER SYSTEM WITH DIGITAL ADAPTIVE POWER BOOST
摘要
<p>An amplifier system with digital adaptive power boost includes a charge pump for providing a power supply to an amplifier. The charge pump may switch between a fixed input DC voltage and a boosted value for a certain period of time in response to an increase in an input signal to the amplifier. The charge pump may use a switching transistor which is switched on only when the input signal to the amplifier exceeds a threshold. The amplifier system may be used for envelope tracking, especially for envelope tracking of low duty cycle signals, e.g., xDSL or vDSL.</p>
申请公布号
WO2010108094(A1)
申请公布日期
2010.09.23
申请号
WO2010US27968
申请日期
2010.03.19
申请人
ANALOG DEVICES, INC.;PIERDOMENICO, JOHN;FRASCH, ZOLTAN;EL-KHOURY, CHARLY