公开(公告)号：US10707813B2

公开(公告)日：2020-07-07

申请号：US16212656

申请日：2018-12-06

Applicant: Apple Inc.

Inventor： David M. Signoff ,  Morteza Nick ,  Anuranjan Jha

IPC: H03F1/02 ,  H03F3/195 ,  H03F3/217

Abstract: A power amplifier and method for operating the same is disclosed. The amplifier includes a number of transistors coupled in series between a power node and a ground node. These transistors include a first transistor having a source terminal coupled to the power node, and a second transistor having its source terminal coupled to a ground node. A subset of transistors is also coupled in series between the first and second transistors. During operation in a first mode, the first and second transistors act as switching transistors, switching according to data received thereby. The subset of transistors, during the first mode, act as cascode transistors. During a second mode of operation, the transistors of the subset act as switching transistors, switching in accordance with the received data.

公开(公告)号：US20200186092A1

公开(公告)日：2020-06-11

申请号：US16212656

申请日：2018-12-06

Applicant: Apple Inc.

Inventor： David M. Signoff ,  Morteza Nick ,  Anuranjan Jha

IPC: H03F1/02 ,  H03F3/217 ,  H03F3/195

Abstract: A power amplifier and method for operating the same is disclosed. The amplifier includes a number of transistors coupled in series between a power node and a ground node. These transistors include a first transistor having a source terminal coupled to the power node, and a second transistor having its source terminal coupled to a ground node. A subset of transistors is also coupled in series between the first and second transistors. During operation in a first mode, the first and second transistors act as switching transistors, switching according to data received thereby. The subset of transistors, during the first mode, act as cascode transistors. During a second mode of operation, the transistors of the subset act as switching transistors, switching in accordance with the received data.