公开(公告)号：WO2016122836A1

公开(公告)日：2016-08-04

申请号：PCT/US2016/012072

申请日：2016-01-04

Applicant: QUALCOMM INCORPORATED

Inventor： JI, Honghao ,  SEO, Dongwon

IPC: H01L27/02 ,  H01L23/60 ,  H01L23/62 ,  H02H11/00 ,  H02H9/04

CPC classification number: H02H3/18 ,  H01L27/0266 ,  H01L27/0292 ,  H02H11/003

Abstract: A reverse current protection (RCP) circuit is provided that includes an RCP switch coupled between a power supply rail and a buffer power supply node. A control circuit powered by a buffer supply voltage on the buffer power supply node controls the RCP switch to open in response to a discharge of a power supply voltage carried on the power supply rail.

Abstract translation: 提供了一个反向电流保护（RCP）电路，其包括耦合在电源轨和缓冲电源节点之间的RCP开关。 由缓冲器电源节点上的缓冲器电源供电的控制电路控制RCP开关响应于在电源轨上承载的电源电压的放电而打开。

公开(公告)号：WO2022072964A1

公开(公告)日：2022-04-07

申请号：PCT/US2021/071343

申请日：2021-09-02

Applicant: QUALCOMM INCORPORATED

Inventor： SUN, Lei ,  JI, Honghao ,  YUAN, Dan

IPC: H03M1/38 ,  H03M1/00 ,  H03M1/08 ,  H03M1/14 ,  H03M1/54 ,  H03M1/64 ,  H03M3/00

Abstract: Certain aspects of the present disclosure provide a successive approximation register (SAR) analog-to-digital converter (ADC) implemented with a digital filter for noise shaping. For example, certain aspects provide a circuit for analog-to-digital conversion having: a first digital-to-analog converter (DAC) having an output coupled to a sampling node; a comparator having an input coupled to the sampling node; SAR logic having an input coupled to an output of the comparator and at least one output coupled to an input of the first DAC; a quantizer configured to generate a first digital signal representing a voltage at the sampling node; a digital filter configured to apply a filter to the first digital signal; and a second DAC configured to generate an analog signal representing the filtered first digital signal and provide the analog signal to the sampling node.

公开(公告)号：WO2016137768A1

公开(公告)日：2016-09-01

申请号：PCT/US2016/017815

申请日：2016-02-12

Applicant: QUALCOMM INCORPORATED

Inventor： SEO, Dongwon ,  YOU, Yang ,  JI, Honghao ,  SONG, Tongyu ,  SARIPALLI, Ganesh ,  MEHDIZAD TALEIE, Shahin

IPC: G05F1/56 ,  G05F1/575

CPC classification number: H03M1/0604 ,  G05F1/56 ,  G05F1/575 ,  G05F3/18 ,  H02M3/156 ,  H03F3/24 ,  H03M1/00 ,  H03M1/70 ,  H03M1/747 ,  H04B1/0475 ,  H04B2001/0408

Abstract: A method and apparatus for attenuating transmit digital to analog converter (DAC) spurs is provided. The method begins when a reference voltage is injected into an amplifier. Next, an output of the ground low drop-out regulator is measured and is them compared with the reference voltage. The output of the amplifier is then adjusted based on the results of the comparison. If the reference voltage is higher then the output of the ground low drop-out regulator the output of the amplifier is adjusted to ground. If the reference voltage is lower than the output of the ground low drop-out regulator then the output of the amplifier is adjusted to match the reference voltage.

Abstract translation: 提供了用于衰减发射数模转换器（DAC）杂散的方法和装置。 当将参考电压注入放大器时，该方法开始。 接下来，测量接地低压降稳压器的输出，并将其与参考电压进行比较。 然后根据比较结果调整放大器的输出。 如果参考电压较高，则接地低压降稳压器的输出将放大器的输出调整到地。 如果参考电压低于接地低压降稳压器的输出，则调节放大器的输出以匹配参考电压。