公开(公告)号：US20150341025A1

公开(公告)日：2015-11-26

申请号：US14487654

申请日：2014-09-16

Applicant: QUALCOMM Incorporated

Inventor： Derui KONG ,  Sang Min LEE ,  Michael Joseph McGOWAN ,  Dongwon SEO

IPC: H03K17/16

CPC classification number: H03K17/16 ,  H03F1/14 ,  H03F3/45188

Abstract: A method and apparatus are provided. The apparatus may be a capacitive element for adjusting a net capacitance of a circuit. The apparatus may be configured to be coupled to the circuit. The apparatus may be configured to adjust the net capacitance of the circuit to decouple common mode and differential loop bandwidth adjustment of the circuit. The capacitive element may include a pair of cross-coupled capacitors configured to be coupled to differential nodes of the circuit, and a pair of negative gain buffers coupled to respective capacitors.

Abstract translation: 提供了一种方法和装置。 该装置可以是用于调整电路的净电容的电容元件。 该装置可以被配置为耦合到该电路。 该装置可以被配置为调整电路的净电容以去耦合电路的共模和差分环路带宽调整。 电容元件可以包括配置为耦合到电路的差分节点的一对交叉耦合电容器，以及耦合到相应电容器的一对负增益缓冲器。

公开(公告)号：US20180358883A1

公开(公告)日：2018-12-13

申请号：US15710704

申请日：2017-09-20

Applicant: QUALCOMM Incorporated

Inventor： Nitz SAPUTRA ,  Sang Min LEE ,  Dongwon SEO ,  Vinay KUNDUR ,  Behnam SEDIGHI ,  Honghao JI

IPC: H02M1/00 ,  H02J5/00 ,  H02M1/14

CPC classification number: H02M1/00 ,  H02J5/00 ,  H02M1/143 ,  H02M2001/0006 ,  H02M2001/0012

Abstract: A calibrating digital to analog converter (calDAC) architecture uses a low voltage memory to store the digital inputs of calDACs. The calDAC architecture includes a low voltage domain and a high voltage domain coupled to the low voltage domain. The low voltage domain includes a calDAC memory and a finite state machine (FSM). The high voltage domain includes a calDAC core, an interface circuit, and a bias control circuit coupled to the interface circuit. The interface circuit may be provided between the calDAC core and the low voltage domain. The bias control circuit is coupled to the interface circuit to generate a bias voltage for the interface circuit to drive switch transistors of the calDAC core.