Current controlling device and signal converting apparatus applying the current controlling device

    公开(公告)号:EP2890006B1

    公开(公告)日:2018-07-18

    申请号:EP14197124.2

    申请日:2014-12-10

    申请人: MediaTek Inc.

    IPC分类号: H03F3/45 H03M1/74

    摘要: A current controlling device (100) includes: a first resistive circuit (102) arranged to selectively conduct a first current (I1) to a first output terminal (No1) from a first input terminal (Ni1); and a second resistive circuit (104) arranged to selectively conduct a second current (12) to a second output terminal (No2) from the first input terminal (Ni1); wherein when the first resistive circuit (102) conducts the first current (I1) to the first output terminal (No1) and when the second resistive circuit (104) does not conduct the second current (I2) to the second output terminal (No2), the first input terminal (Ni1) has a first input impedance; when the first resistive circuit (102) does not conduct the first current (I1) to the first output terminal (No2) and when the second resistive circuit (104) conducts the second current (I2) to the second output terminal (No2), the first input terminal (Ni1) has a second input impedance substantially equal to the first input impedance.

    Current controlling device and signal converting apparatus applying the current controlling device
    7.
    发明公开
    Current controlling device and signal converting apparatus applying the current controlling device 有权
    Stromsteuerungsvorrichtung und Signalumwandlungsvorrichtungsanwendung mit der Stromsteuerungsvorrichtung

    公开(公告)号:EP2890006A1

    公开(公告)日:2015-07-01

    申请号:EP14197124.2

    申请日:2014-12-10

    申请人: MediaTek, Inc

    IPC分类号: H03G1/00 H03H11/24

    摘要: A current controlling device (100) includes: a first resistive circuit (102) arranged to selectively conduct a first current (I1) to a first output terminal (No1) from a first input terminal (Ni1); and a second resistive circuit (104) arranged to selectively conduct a second current (12) to a second output terminal (No2) from the first input terminal (Ni1); wherein when the first resistive circuit (102) conducts the first current (I1) to the first output terminal (No1) and when the second resistive circuit (104) does not conduct the second current (I2) to the second output terminal (No2), the first input terminal (Ni1) has a first input impedance; when the first resistive circuit (102) does not conduct the first current (I1) to the first output terminal (No2) and when the second resistive circuit (104) conducts the second current (I2) to the second output terminal (No2), the first input terminal (Ni1) has a second input impedance substantially equal to the first input impedance.

    摘要翻译: 电流控制装置(100)包括:第一电阻电路(102),布置成从第一输入端子(Ni1)选择性地将第一电流(I1)传导到第一输出端子(No1); 以及第二电阻电路(104),被布置成从第一输入端子(Ni1)选择性地将第二电流(12)传导到第二输出端子(No2); 其中当第一电阻电路(102)向第一输出端(No1)传导第一电流(I1)时,当第二电阻电路(104)不将第二电流(I2)传导到第二输出端(No2)时, ,第一输入端(Ni1)具有第一输入阻抗; 当第一电阻电路(102)不向第一输出端子(No2)传导第一电流(I1)时,当第二电阻电路(104)向第二输出端子(No2)传导第二电流(I2)时, 第一输入端子(Ni1)具有基本上等于第一输入阻抗的第二输入阻抗。

    Ausgangspufferverstärker mit grossem Signalhub
    8.
    发明公开
    Ausgangspufferverstärker mit grossem Signalhub 失效
    输出缓冲放大器具有大信号摆动。

    公开(公告)号:EP0509113A1

    公开(公告)日:1992-10-21

    申请号:EP91106068.9

    申请日:1991-04-16

    IPC分类号: H03F3/30 H03F1/32 H03F3/21

    摘要: Ausgangspufferverstärker mit einer Endstufe (1, 2, 3, 4, 7, 8) für kleine Ausgangsleistungen und einer Endstufe (9, 10, 13, 14, 15, 16) für große Ausgangsleistungen, deren Ausgänge miteinander verbunden sind, und mit einer Regelstufe (12), die der Endstufe (1, 2, 3, 4, 7, 8) für kleine Ausgangsleistungen vorgeschaltet ist und deren einer Eingang durch ein einem Eingangssignal der Endstufe (9, 10, 13, 14, 15, 16) für große Ausgangsleistungen proportionales Signal und deren anderer Eingang durch ein einem Ausgangssignal der Endstufe (1, 2, 3, 4, 7, 8) für kleine Ausgangsleistungen proportionales Signal angesteuert wird.

    摘要翻译: 具有输出级输出缓冲放大器(1,2,3,4,7,8)为小输出功率和输出级(9,10,13,14,15,16),用于大的输出功率,其输出被连接在一起,并与控制级 (12)的输出级(1,2,3,4,7,8)相连接,以便小的输出功率,并具有用于大通过输出级的输入信号的一个输入端(图9,10,13,14,15,16) 输出信号正比于通过输出级的输出的另一输入端(1,2,3,4,7,8)为小输出功率成比例的信号被驱动。