公开(公告)号：US09013238B2

公开(公告)日：2015-04-21

申请号：US14016437

申请日：2013-09-03

Applicant: Advanced Semiconductor Engineering Inc.

Inventor： Jaw-Ming Ding ,  Jia-Hong Mou ,  Hsin-Chin Chang

IPC: H03F3/04 ,  H03F1/02 ,  H03F3/19

CPC classification number: H03F1/0205 ,  H03F1/0261 ,  H03F1/52 ,  H03F3/19 ,  H03F3/191 ,  H03F2200/18

Abstract: A radio frequency (RF) amplifier is disclosed. The RF power amplifier includes a bias circuit, an output-stage circuit and a RF compensation circuit. When a first system voltage is larger than a first voltage threshold value, the bias circuit generates a first current rising slightly. When first system voltage is larger than second voltage threshold value, the RF compensation circuit receives a second circuit rising slightly transmitted from the bias circuit. When the first system voltage is in an operation voltage range, the first current is larger than the second circuit so as to a quiescent operating current of the RF power amplifier is independent of change of the first system voltage. When the first system voltage is larger than a third voltage threshold value, the first current is equal to the second current so as to have the bias current being a zero current to protect the RF power amplifier from over-voltage.

Abstract translation: 公开了射频（RF）放大器。 RF功率放大器包括偏置电路，输出级电路和RF补偿电路。 当第一系统电压大于第一电压阈值时，偏置电路产生稍微上升的第一电流。 当第一系统电压大于第二电压阈值时，RF补偿电路接收从偏置电路稍微传输的第二电路。 当第一系统电压处于工作电压范围时，第一电流大于第二电路，以使RF功率放大器的静态工作电流与第一系统电压的变化无关。 当第一系统电压大于第三电压阈值时，第一电流等于第二电流，以使偏置电流为零电流，以保护RF功率放大器免受过电压。

公开(公告)号：US09141125B2

公开(公告)日：2015-09-22

申请号：US14016432

申请日：2013-09-03

Applicant: ADVANCED SEMICONDUCTOR ENGINEERING INC.

Inventor： Jaw-Ming Ding ,  Hsin-Chin Chang

IPC: G05F3/30 ,  G05F1/567

CPC classification number: G05F3/30

Abstract: A bandgap reference voltage generating circuit for providing a reference voltage is disclosed. The bandgap reference voltage generating circuit includes four-terminal current source circuit, a regulator circuit and a temperature-compensating circuit. The four-terminal current source circuit outputs a first voltage, a second voltage and a first current which are independent of variation of a first system voltage. The regulator circuit receives the first voltage and the second voltage and when the first system voltage is larger than a threshold voltage value, the regulator circuit outputs the reference voltage independent of variation of the first system voltage via voltage-difference between the first voltage and the second voltage. The temperature-compensating circuit receives the first current and compensates a temperature curve of the reference voltage outputted from the regulator circuit.

Abstract translation: 公开了一种用于提供参考电压的带隙基准电压产生电路。 带隙参考电压产生电路包括四端电流源电路，调节器电路和温度补偿电路。 四端电流源电路输出与第一系统电压的变化无关的第一电压，第二电压和第一电流。 调节器电路接收第一电压和第二电压，并且当第一系统电压大于阈值电压值时，调节器电路通过第一电压和第二电压之间的电压差而独立于第一系统电压的变化而输出参考电压 第二电压。 温度补偿电路接收第一电流并补偿从调节器电路输出的参考电压的温度曲线。