公开(公告)号：US20180212572A1

公开(公告)日：2018-07-26

申请号：US15841321

申请日：2017-12-14

Applicant: MEDIATEK INC.

Inventor： Jui-Yu Hsu ,  Yuan-Fu Lyu ,  Sheng-Hao Chen

IPC: H03F1/32 ,  H03F3/21 ,  H03F1/22 ,  H03F3/45

CPC classification number: H03F1/3211 ,  H03F1/223 ,  H03F3/21 ,  H03F3/3023 ,  H03F3/45192 ,  H03F3/4521 ,  H03F3/45219 ,  H03F2200/165 ,  H03F2200/168 ,  H03F2203/45134 ,  H03F2203/45296 ,  H03F2203/45298 ,  H03F2203/45302

Abstract: The present invention provides a class AB amplifier, wherein the class AB amplifier includes a cascode stage with a filter and an output stage. The cascode stage with the filter is arranged for receiving an input signal to generate a first driving signal and a second driving signal, wherein the filter filters the input signal to generate an filtered input signal, and at least one of the first driving signal and the second driving signal is generated according to the filtered input signal. The output stage is coupled to the cascode stage, and is arranged for generating an output signal according to the first driving signal and the second driving signal.

公开(公告)号：US10574193B2

公开(公告)日：2020-02-25

申请号：US15841321

申请日：2017-12-14

Applicant: MEDIATEK INC.

Inventor： Jui-Yu Hsu ,  Yuan-Fu Lyu ,  Sheng-Hao Chen

IPC: H03F3/45 ,  H03F1/32 ,  H03F3/21 ,  H03F1/22 ,  H03F3/30

Abstract: The present invention provides a class AB amplifier, wherein the class AB amplifier includes a cascode stage with a filter and an output stage. The cascode stage with the filter is arranged for receiving an input signal to generate a first driving signal and a second driving signal, wherein the filter filters the input signal to generate an filtered input signal, and at least one of the first driving signal and the second driving signal is generated according to the filtered input signal. The output stage is coupled to the cascode stage, and is arranged for generating an output signal according to the first driving signal and the second driving signal.