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    • 2. 发明授权
    • CMOS Dynamic amplifier
    • CMOS动态放大器
    • US4431929A
    • 1984-02-14
    • US355613
    • 1982-03-08
    • Eric A. Vittoz
    • Eric A. Vittoz
    • H03F3/16H03F3/00H03F3/18H03F3/20H03F3/30H03F3/34H03F3/345H03H19/00G06G7/18
    • H03F3/005H03H19/004
    • A dynamic amplifier comprises two complementary MOS transistors T1 and T2 which are connected in series, the gates G1 and G2 of which are connected to each other and to an input node by way of capacitors C1 and C2. The gate of T1 is connected to its drain by a switch means S1. The input node is connected to an input terminal and a reference voltage terminal by switch means S4 and S3 respectively and an output node between T1 and T2 is connected to an output terminal by switch means S5. The gate of T2 is connected by way of a switch means S2 to a bias voltage source. The switch means S1 to S5 are actuated in such a way that in a first, preparation phase of the amplifier, switches S1, S2 and S3 are closed with the input node being at a reference voltage Vref and the currents I1 and I2 through T1 and T2 being equal to a value fixed by the voltage source and, in an amplification phase, switches S4 and S5 are closed so that the output current Is increases in absolute value with the voltage Ve applied to the input node.
    • 动态放大器包括串联连接的两个互补MOS晶体管T1和T2,其栅极G1和G2彼此连接,并通过电容器C1和C2连接到输入节点。 T1的栅极通过开关装置S1连接到其漏极。 输入节点分别通过开关装置S4和S3连接到输入端子和参考电压端子,并且T1和T2之间的输出节点通过开关装置S5连接到输出端子。 T2的栅极通过开关装置S2连接到偏置电压源。 开关装置S1至S5被致动,使得在放大器的第一准备阶段中,开关S1,S2和S3在输入节点处于参考电压Vref并且电流I1和I2通过T1和 T2等于由电压源固定​​的值,并且在放大阶段中,开关S4和S5闭合,使得输出电流Is随施加到输入节点的电压Ve而绝对值增加。
    • 3. 发明授权
    • Amplifier with input drift voltage compensation
    • 具有输入漂移电压补偿的放大器
    • US4628274A
    • 1986-12-09
    • US728883
    • 1985-04-30
    • Eric A. VittozHenri J. Oguey
    • Eric A. VittozHenri J. Oguey
    • H03F3/34H03F1/30H03F3/45H03F1/14
    • H03F3/45753H03F1/303H03F3/45977
    • The invention concerns an amplifier comprising means for compensating for the input drift voltage. During a preparation phase, the input signal of the amplifier (10) is nullified by short-circuiting the inputs (12) and (13) by means of the change-over switch (30) and the output (15) is connected to a capacitor (40) and to a secondary input (14) of the amplifier. The secondary input has a substantially lower gain than the gain relative to the main input (13), which makes it possible substantially to reduce the effect of charge injection caused by opening of the switch (60). In the amplification phase, the input (13) receives an input signal (V1) and the input drift voltage (.alpha.V) is compensated by means of the value stored in the capacitor (40).
    • 本发明涉及一种放大器,包括用于补偿输入漂移电压的装置。 在准备阶段期间,放大器(10)的输入信号通过使转换开关(30)短路输入(12)和(13)而无效,并且输出端(15)连接到 电容器(40)和放大器的辅助输入端(14)。 辅助输入具有比相对于主输入(13)的增益明显更低的增益,这使得可能基本上减少由开关(60)的打开引起的电荷注入的影响。 在放大阶段,输入端(13)接收输入信号(V1),通过存储在电容器(40)中的值补偿输入漂移电压(αV)。
    • 5. 发明授权
    • Differential amplifier with bipolar transistors which is compatible with
standard complimentary MOS (CMOS) technology
    • 具有与标准互补MOS(CMOS)技术兼容的双极晶体管的差分放大器
    • US4580106A
    • 1986-04-01
    • US588373
    • 1984-03-12
    • Eric A. Vittoz
    • Eric A. Vittoz
    • H03F3/193H01L21/8222H01L21/8249H01L27/06H03F3/45
    • H03F3/4556H03F2203/45408H03F2203/45424
    • There is disclosed a differential amplifier which comprises bipolar transistors which may be produced using MOS technology and wherein the amplifier is particularly useful when the transistors have a poorly defined current gain. The amplifier includes a first pair of transistors having emitters connected in common and having bases forming the inputs to the differential amplifier. A second pair of transistors identical to the first pair are coupled such that the emitters and bases of said second pair are connected respectively to the emitters and bases of the first pair. The collectors of the second pair of transistors are connected to a current generator and to the input of a transconductance amplifier such that the transconductance amplifier causes the sum of the emitter currents of the first and second pairs of transistors to be controlled by the current supplied by the current generator.
    • 公开了一种差分放大器,其包括可以使用MOS技术产生的双极晶体管,并且其中当晶体管具有不良限定的电流增益时,该放大器特别有用。 放大器包括第一对晶体管,其具有共同连接的发射极,并且具有形成到差分放大器的输入的基极。 与第一对相同的第二对晶体管被耦合,使得所述第二对的发射极和基极分别连接到第一对的发射极和基极。 第二对晶体管的集电极连接到电流发生器和跨导放大器的输入端,使得跨导放大器使得第一和第二对晶体管的发射极电流的和通过由 电流发电机。