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    • 4. 发明公开
    • 차동전압을 전평형전류로 변환하는 장치 및 방법
    • 将差分电压转换成全平衡电流的装置
    • KR1020000035417A
    • 2000-06-26
    • KR1019990049968
    • 1999-11-11
    • 가부시끼가이샤 도시바
    • 지스라후차널이시이히로토모오다가즈히로
    • H03F3/343H03F3/45
    • H03F3/45179H03F3/45206H03F3/45278H03F3/4565H03F3/45654H03F3/45659H03F3/45672H03F3/45726H03F2203/45394H03F2203/45402H03F2203/45418H03F2203/45424H03F2203/45711
    • PURPOSE: An apparatus for converting a differential voltage into a full balance current is provided to stabilize a common mode output current component by a fixed value. CONSTITUTION: An apparatus for converting a differential voltage into a full balance current comprises an operational transconductance amplifier(OTA)(1) having two output terminals and a common mode feed forward control(CMFF) circuit(2). The OTA(1) consists of an OTA input part(11) and an OTA output part(12). A differential input voltage(V1-V2) is supplied to a pair of input terminals(111) of the OTA input part(11), and a pair of interim output currents are generated from a pair of output terminals(12) of the OTA input part(12). The interim output currents are supplied to the OTA output part(12) and the CMFF circuit(2), each of which have high impedance control terminals(123,133). A control voltage(Vc) across the control terminals(123,133) is applied to the control terminals(122,133) of each of the OTA output part(12) and the CMFF circuit(2).
    • 目的:提供一种用于将差分电压转换成全平衡电流的装置,用于将共模输出电流分量稳定一固定值。 构成:用于将差分电压转换成全平衡电流的装置包括具有两个输出端和共模前馈控制(CMFF)电路(2)的运算跨导放大器(1)。 OTA(1)由OTA输入部分(11)和OTA输出部分(12)组成。 差分输入电压(V1-V2)被提供给OTA输入部分(11)的一对输入端子(111),并且从OTA的一对输出端子(12)产生一对中间输出电流 输入部(12)。 中间输出电流被提供给OTA输出部分(12)和CMFF电路(2),每个具有高阻抗控制端子(123,133)。 跨越控制端子(123,133)的控制电压(Vc)被施加到OTA输出部分(12)和CMFF电路(2)中的每一个的控制端子(122,133)。