公开(公告)号：US20160173044A1

公开(公告)日：2016-06-16

申请号：US14566539

申请日：2014-12-10

Applicant: QUALCOMM INCORPORATED

Inventor： Qubo ZHOU

IPC: H03F3/45 ,  H03M3/00

CPC classification number: H03F3/45179 ,  H03F1/086 ,  H03F3/45188 ,  H03F2200/45 ,  H03F2203/45024 ,  H03F2203/45034 ,  H03F2203/45058 ,  H03F2203/45194 ,  H03F2203/45296 ,  H03F2203/45631 ,  H03M3/458

Abstract: A method and an apparatus relating to an amplifier (e.g., an operational transconductance amplifier or OTA) are provided. The OTA includes a first node and a second node. The OTA further includes a differential transistor pair for receiving an input. The differential transistor pair is coupled to the first node and the second node. The OTA includes a pair of output nodes for outputting a response to the input. The response at the pair of output nodes includes a first frequency pole. A capacitive element is coupled between the first node and the second node. The response includes a second frequency pole based on the capacitive element. The second frequency pole is at a greater frequency than the first frequency pole.

Abstract translation: 提供了与放大器（例如，运算跨导放大器或OTA）相关的方法和装置。 OTA包括第一节点和第二节点。 OTA还包括用于接收输入的差分晶体管对。 差分晶体管对耦合到第一节点和第二节点。 OTA包括用于输出对输入的响应的一对输出节点。 输出节点对的响应包括第一个频率极点。 电容元件耦合在第一节点和第二节点之间。 响应包括基于电容元件的第二频率极点。 第二个频率极点处于比第一个频率极点更大的频率。

公开(公告)号：US20190250208A1

公开(公告)日：2019-08-15

申请号：US15892739

申请日：2018-02-09

Applicant: QUALCOMM Incorporated

Inventor： Vijayakumar DHANASEKARAN ,  Qubo ZHOU ,  Lennart Karl-Axel MATHE

IPC: G01R31/28 ,  H01L49/02 ,  H01L29/92 ,  H01L23/58 ,  H01L21/66

CPC classification number: G01R31/2884 ,  G01R31/2856 ,  G01R31/2858 ,  G01R31/2896 ,  H01L22/32 ,  H01L22/34 ,  H01L23/585 ,  H01L28/20 ,  H01L29/92

Abstract: Various features relate to a test ring including an integrated circuit. The test ring is located around a periphery of the integrated circuit. The test ring includes a first terminal, a second terminal, and a first circuit element, wherein the first terminal is coupled to the first circuit element, and the first circuit element is coupled to the second terminal, wherein the first terminal, the first circuit element and the second terminal are coupled together in series.

公开(公告)号：US20210297046A1

公开(公告)日：2021-09-23

申请号：US16827280

申请日：2020-03-23

Applicant: QUALCOMM Incorporated

Inventor： Pradeep SILVA ,  Ramkumar SIVAKUMAR ,  Qubo ZHOU ,  Xinwang ZHANG ,  Hanil LEE ,  Dongyang TANG ,  Vijayakumar DHANASEKARAN

IPC: H03F1/02 ,  H03F3/21

Abstract: A power amplifier provides reduction of click and pop in audio applications. The power amplifier includes a first amplifier and an auxiliary amplifier. The auxiliary amplifier is used to ramp the power amplifier output from ground to an offset voltage to reduce the “click and pop” sound. The first amplifier and the auxiliary amplifier having a shared feedback loop. An output of the first amplifier and an output of the auxiliary amplifier may be switchably coupled to the shared feedback loop. A wave generator controls a switch to couple the first amplifier output or the auxiliary amplifier output to the shared feedback loop.