公开(公告)号：US09059673B2

公开(公告)日：2015-06-16

申请号：US14088454

申请日：2013-11-25

Applicant: Novatek Microelectronics Corp.

Inventor： Ying-Chung Chiu

IPC: H03F3/45 ,  H03G3/20

CPC classification number: H03G3/20 ,  H03G1/0029

Abstract: An amplifier circuit and an operation method thereof are provided. The amplifier circuit includes two stages of amplifiers. When the amplifier circuit is operated in a high gain mode, the two stages of amplifiers are operated normally to provide high gain. When the amplifier circuit is operated in a low gain mode, the second stage of amplifier is turned off, and the first stage of amplifier is coupled to output terminals of the amplifier circuit through signal isolation elements so as to form a single stage of amplifier. Therefore, the amplifier circuit can change the total gain value thereof according to a requirement of gain.

Abstract translation: 提供了一种放大器电路及其操作方法。 放大器电路包括两级放大器。 当放大器电路在高增益模式下工作时，两级放大器正常工作，以提供高增益。 当放大器电路在低增益模式下工作时，放大器的第二级关断，放大器的第一级通过信号隔离元件耦合到放大器电路的输出端，从而形成单级放大器。 因此，放大器电路可以根据增益的要求改变其总增益值。

公开(公告)号：US11764801B2

公开(公告)日：2023-09-19

申请号：US17356552

申请日：2021-06-24

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： Shiau-Wen Kao ,  Ying-Chung Chiu

IPC: H03M1/12 ,  H03M1/36 ,  G06F7/544 ,  H03M1/06 ,  H03M1/80 ,  G06F11/10 ,  G06F7/20

CPC classification number: H03M1/368 ,  G06F7/5443 ,  H03M1/069 ,  H03M1/802 ,  G06F7/20 ,  G06F11/1068

Abstract: A computing-in-memory circuit comprises a computing element array and an analog-to-digital conversion circuit. The computing element array is utilized for analog computation operations. The computing element array includes memory cells, a first group of computing elements, and a second group of computing elements. The first group of computing elements provides capacitance for analog computation in response to an input vector and receives data from the plurality of memory cells and the input vector. The second group of computing elements provides capacitance for quantization. Each computing element of the computing element array is based on a switched-capacitors circuit. The analog-to-digital conversion circuit includes a comparator and a conversion control unit. The comparator has a signal terminal, a reference terminal, and a comparison output terminal, wherein the first and second groups of computing elements are selectively coupled to the signal terminal and the reference terminal.

公开(公告)号：US20150091648A1

公开(公告)日：2015-04-02

申请号：US14088454

申请日：2013-11-25

Applicant: Novatek Microelectronics Corp.

Inventor： Ying-Chung Chiu

IPC: H03G3/20

CPC classification number: H03G3/20 ,  H03G1/0029

Abstract: An amplifier circuit and an operation method thereof are provided. The amplifier circuit includes two stages of amplifiers. When the amplifier circuit is operated in a high gain mode, the two stages of amplifiers are operated normally to provide high gain. When the amplifier circuit is operated in a low gain mode, the second stage of amplifier is turned off, and the first stage of amplifier is coupled to output terminals of the amplifier circuit through signal isolation elements so as to form a single stage of amplifier. Therefore, the amplifier circuit can change the total gain value thereof according to a requirement of gain.

Abstract translation: 提供了一种放大器电路及其操作方法。 放大器电路包括两级放大器。 当放大器电路在高增益模式下工作时，两级放大器正常工作以提供高增益。 当放大器电路在低增益模式下工作时，放大器的第二级关断，放大器的第一级通过信号隔离元件耦合到放大器电路的输出端，从而形成单级放大器。 因此，放大器电路可以根据增益的要求改变其总增益值。

公开(公告)号：US20130342261A1

公开(公告)日：2013-12-26

申请号：US13649117

申请日：2012-10-11

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： Ying-Chung Chiu

IPC: H03K17/04

CPC classification number: H03K17/04123 ,  H03K2217/0081

Abstract: A fast bias circuit including a bias unit, a resistor, a first switch, and a detecting circuit is provided. The resistor has a first terminal coupled to the bias unit to receive a bias voltage, and a second terminal coupled to a bias terminal of a target circuit, wherein the bias terminal is coupled to an input signal. The first switch has a first terminal coupled to the first terminal of the resistor, a second terminal coupled to the second terminal of the resistor, and a control terminal coupled to the detecting circuit. During an initialisation period, the detecting circuit compares the bias voltage with a voltage at the bias terminal of the target circuit to obtain a comparison result, and controls the first switch according to the comparison result. Furthermore, a fast bias method and a bias and load circuit are also provided.

Abstract translation: 提供一种包括偏置单元，电阻器，第一开关和检测电路的快速偏置电路。 电阻器具有耦合到偏置单元以接收偏置电压的第一端子和耦合到目标电路的偏置端子的第二端子，其中偏置端子耦合到输入信号。 第一开关具有耦合到电阻器的第一端子的第一端子，耦合到电阻器的第二端子的第二端子和耦合到检测电路的控制端子。 在初始化期间，检测电路将偏置电压与目标电路的偏置端子的电压进行比较，得到比较结果，并根据比较结果对第一开关进行控制。 此外，还提供了快速偏置方法和偏置和负载电路。