公开(公告)号：US20240230720A1

公开(公告)日：2024-07-11

申请号：US18150587

申请日：2023-01-05

Applicant: MEDIATEK INC.

Inventor： Long-Kun YU ,  Zi-Ren LIU ,  Ching-Wen CHENG ,  Hsun-Wei PAO ,  Wai-Ling CHENG ,  Ping CHEN ,  Jie-Fan LAI ,  Yeng-Ming TZENG ,  Hung-Chuan CHEN ,  Chia-Hua CHOU ,  Bing-Shiun WANG ,  Chia-Lung CHUANG ,  Duen-Yi HO ,  Che-Chi HUANG

IPC: G01R15/14

CPC classification number: G01R15/144

Abstract: A detection device includes a substrate and a die. The substrate provides a first voltage. The die is disposed adjacent to the substrate. The die includes a plurality of resistor paths, a selection circuit, an ADC (Analog-to-Digital Converter), and a digital circuit. The selection circuit selects one of the resistor paths as a target path. The target path provides a second voltage. The ADC generates a digital signal according to the first voltage and the second voltage. The digital circuit processes the digital signal.

公开(公告)号：US20170038783A1

公开(公告)日：2017-02-09

申请号：US15043687

申请日：2016-02-15

Applicant: MediaTek Inc.

Inventor： Chin-Hsun CHEN ,  Hao-Yuan LIN ,  Chia-Hua CHOU

IPC: G05F1/46

CPC classification number: G05F1/46 ,  G05F1/56 ,  G05F1/563

Abstract: A dynamic current sink includes the following elements. A voltage comparator compares a reference voltage with a second control signal from an LDO (Low Dropout Linear Regulator) to generate a first control signal. A first transistor selectively pulls down a voltage at a first node according to the first control signal. The inverter is coupled between the first node and a second node. An NAND gate has a first input terminal coupled to a second transistor and a third node, a second input terminal coupled to the second node, and an output terminal coupled to a fourth node. A capacitor is coupled between the fourth node and a fifth node. A resistor is coupled between the fifth node and a ground voltage. A third transistor has a control terminal coupled to the fifth node, and selectively draws a discharge current from an output node of the LDO.

Abstract translation: 动态电流吸收器包括以下元件。 电压比较器将参考电压与来自LDO（低压降线性稳压器）的第二控制信号进行比较，以产生第一控制信号。 第一晶体管根据第一控制信号选择性地拉低第一节点处的电压。 逆变器耦合在第一节点和第二节点之间。 NAND门具有耦合到第二晶体管和第三节点的第一输入端子，耦合到第二节点的第二输入端子以及耦合到第四节点的输出端子。 电容器耦合在第四节点和第五节点之间。 电阻器耦合在第五节点和接地电压之间。 第三晶体管具有耦合到第五节点的控制端，并且选择性地从LDO的输出节点绘制放电电流。