Memory modules, memory systems including the same, and methods of calibrating multi-die impedance of the memory modules

    公开(公告)号:US10361699B2

    公开(公告)日:2019-07-23

    申请号:US15922332

    申请日:2018-03-15

    Abstract: A memory module includes an external resistor and a plurality of memory devices commonly connected to the external resistor. Each of the memory devices includes a first reception pad and a first transmission pad. The first reception pad is associated with receiving an impedance calibration command and the first transmission pad is associated with transmitting the impedance calibration command. Each of the memory devices transfers the impedance calibration command to a first memory device which is selected as a master among the plurality of memory devices through a ring topology. The first memory device performs an impedance calibration operation, determines a resistance and a target output high level voltage of an output driver in response to the impedance calibration command, and transfers the impedance calibration command to a second memory device after performing the impedance calibration operation.

    Input receiver circuit having single-to-differential amplifier, and semiconductor device including the same
    15.
    发明授权
    Input receiver circuit having single-to-differential amplifier, and semiconductor device including the same 有权
    具有单对差分放大器的输入接收器电路和包括其的半导体器件

    公开(公告)号:US09030262B2

    公开(公告)日:2015-05-12

    申请号:US13834132

    申请日:2013-03-15

    Abstract: An input receiver circuit including a single-to-differential amplifier and a semiconductor device including the input receiver circuit are disclosed. The input receiver circuit includes a first stage amplifier unit and a second stage amplifier unit. The first stage amplifier unit amplifies a single input signal in a single-to-differential mode to generate a differential output signal, without using a reference voltage. The second stage amplifier unit amplifies the differential output signal in a differential-to-single mode to generate a single output signal.

    Abstract translation: 公开了包括单差分放大器和包括输入接收器电路的半导体器件的输入接收器电路。 输入接收机电路包括第一级放大器单元和第二级放大器单元。 第一级放大器单元以单差模式放大单个输入信号以产生差分输出信号,而不使用参考电压。 第二级放大器单元以差分到单个模式放大差分输出信号以产生单个输出信号。

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