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    • 10. 发明申请
    • LOW-CURRENT AMPLIFIER
    • 低电流放大器
    • WO1995005027A1
    • 1995-02-16
    • PCT/JP1994000478
    • 1994-03-25
    • FUJITSU LIMITEDNAGAYA, SetsuyaSUGAWARA, HideoWATANABE, Tominaga
    • FUJITSU LIMITED
    • H03F01/02
    • H03F3/45381H03F1/26H03F3/19H03F3/343H03F3/345H03F3/45076H03F3/45085H03F2200/372H03F2203/45201H03F2203/45316H03F2203/45374H03F2203/45398H03F2203/45594
    • This invention discloses a low noise, high-gain, low-current amplifier suitable for an integrated circuit. Transistors such as FETs are used as amplifier components. In a basic amplifier using the transistors, a differential pair are constituted of first and second transistors, first and second resistors connected to the collectors of the first and second transistors, respectively, and a constant current source connected to a common emitter of the first and second transistors. The amplifier further includes a third transistor having the emitter thereof connected to the junction of the first and second resistors, a capacitor connected between the junction of the first transistor and the first resistor of the junction of the second transistor and the second resistor and the base of the third transistor, and a power supply connected to the collector of the third transistor. The amplifier produces the output from the emitter of the third transistor.
    • 本发明公开了一种适用于集成电路的低噪声,高增益,低电流放大器。 晶体管如FET用作放大器组件。 在使用晶体管的基本放大器中,差分对分别由第一和第二晶体管构成,第一和第二电阻分别连接到第一和第二晶体管的集电极,恒流源连接到第一和第二晶体管的公共发射极, 第二晶体管。 放大器还包括第三晶体管,其第三晶体管的发射极连接到第一和第二电阻器的结;电容器,连接在第一晶体管与第二晶体管与第二电阻器的结的第一电阻之间, 并且连接到第三晶体管的集电极的电源。 放大器产生来自第三晶体管的发射极的输出。