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    • 1. 发明授权
    • Low-power multi-level pulse amplitude modulation driver and semiconductor device having the driver
    • 具有驱动器的低功率多电平脉冲幅度调制驱动器和半导体器件
    • US07327184B2
    • 2008-02-05
    • US11454746
    • 2006-06-16
    • Ki-Hyuk SungChi-Won Kim
    • Ki-Hyuk SungChi-Won Kim
    • G06F7/44
    • H03M5/20H03M1/002H03M1/745
    • A low-power multi-level pulse amplitude modulation (PAM) driver, and a semiconductor device having the same, in which the multi (M)-level PAM driver includes a load unit, first and second current sources, a pair of first input transistors, a pair of second input transistors, and a current source controller, where M is an integer greater than 3. The load unit is electrically connected to an output terminal, and the first and second current sources respectively supply a first amount of current and a second amount of current to the load unit. The pair of first input transistors electrically connects the first current source and the load unit in response to a first bit signal, and the pair of the second input transistors electrically connects the second current source and the load unit in response to a second bit signal. The current source controller activates or deactivates one of the first and second current sources in response to the first and second bit signals. Accordingly, current sources for a multi-level PAM driver are selectively activated or deactivated, thereby minimizing power consumption in the multi-level PAM driver.
    • 低功率多电平脉冲幅度调制(PAM)驱动器和具有该低功率多电平脉冲幅度调制(PAM)驱动器的半导体器件,其中多(M)级PAM驱动器包括负载单元,第一和第二电流源,一对第一输入 晶体管,一对第二输入晶体管和电流源控制器,其中M是大于3的整数。负载单元电连接到输出端,并且第一和第二电流源分别提供第一量的电流和 第二量的电流到负载单元。 一对第一输入晶体管响应于第一位信号而电连接第一电流源和负载单元,并且该对第二输入晶体管响应于第二位信号而电连接第二电流源和负载单元。 电流源控制器响应于第一和第二位信号激活或去激活第一和第二电流源之一。 因此,多级PAM驱动器的电流源被选择性地激活或去激活,从而最小化多电平PAM驱动器中的功耗。
    • 2. 发明申请
    • Low-power multi-level pulse amplitude modulation driver and semiconductor device having the driver
    • 具有驱动器的低功率多电平脉冲幅度调制驱动器和半导体器件
    • US20070052455A1
    • 2007-03-08
    • US11454746
    • 2006-06-16
    • Ki-Hyuk SungChi-Won Kim
    • Ki-Hyuk SungChi-Won Kim
    • H03B1/00H03K3/00
    • H03M5/20H03M1/002H03M1/745
    • A low-power multi-level pulse amplitude modulation (PAM) driver, and a semiconductor device having the same, in which the multi (M)-level PAM driver includes a load unit, first and second current sources, a pair of first input transistors, a pair of second input transistors, and a current source controller, where M is an integer greater than 3. The load unit is electrically connected to an output terminal, and the first and second current sources respectively supply a first amount of current and a second amount of current to the load unit. The pair of first input transistors electrically connects the first current source and the load unit in response to a first bit signal, and the pair of the second input transistors electrically connects the second current source and the load unit in response to a second bit signal. The current source controller activates or deactivates one of the first and second current sources in response to the first and second bit signals. Accordingly, current sources for a multi-level PAM driver are selectively activated or deactivated, thereby minimizing power consumption in the multi-level PAM driver.
    • 低功率多电平脉冲幅度调制(PAM)驱动器和具有该低功率多电平脉冲幅度调制(PAM)驱动器的半导体器件,其中多(M)级PAM驱动器包括负载单元,第一和第二电流源,一对第一输入 晶体管,一对第二输入晶体管和电流源控制器,其中M是大于3的整数。负载单元电连接到输出端,并且第一和第二电流源分别提供第一量的电流和 第二量的电流到负载单元。 一对第一输入晶体管响应于第一位信号而电连接第一电流源和负载单元,并且该对第二输入晶体管响应于第二位信号而电连接第二电流源和负载单元。 电流源控制器响应于第一和第二位信号激活或去激活第一和第二电流源之一。 因此,多级PAM驱动器的电流源被选择性地激活或去激活,从而最小化多电平PAM驱动器中的功耗。