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    • 2. 发明申请
    • DIFFERENTIAL AMPLIFIER WITH OVER-VOLTAGE PROTECTION AND METHOD
    • 具有过压保护和方法的差分放大器
    • WO2007095509A2
    • 2007-08-23
    • PCT/US2007062015
    • 2007-02-13
    • TEXAS INSTRUMENTS INCALENIN SERGEY VSURTIHADI HENRY
    • ALENIN SERGEY VSURTIHADI HENRY
    • H03F3/45085H03F1/52H03F1/523H03F3/45098H03F3/45278H03F2200/444
    • Circuitry for preventing damage to bipolar transistors in integrated circuit amplifier circuitry during slew-limited operation includes first (Q1 or Q3) and second transistors (Q2 or Q4), each having first, second, and third electrodes, a first one of the first and second electrodes of the first transistor being coupled to receive a first signal (Vin+ or Vin+ +), and a first one of the first and second electrodes of the second transistor being coupled to receive a second signal (Vin- or Vin- - ). A first separator transistor (J3) having a first current-carrying electrode coupled to the first one of the first and second electrodes of the first transistor and a second current-carrying electrode coupled to the first one of the first and second electrodes of the second transistor is controlled so as to electrically isolate the first one of the first and second electrodes of the first transistor from the first one of the first and second electrodes of the second transistor in response to the first and second signals to limit a reverse bias voltage across a PN junction of one of the first and second transistors.
    • 用于防止在压摆限制操作期间在集成电路放大器电路中损坏双极晶体管的电路包括第一(Q1或Q3)和第二晶体管(Q2或Q4),每个具有第一,第二和第三电极,第一和第三电极的第一和第三电极 第一晶体管的第二电极被耦合以接收第一信号(Vin +或Vin + +),并且第二晶体管的第一和第二电极中的第一电极被耦合以接收第二信号(Vin-或Vin-)。 第一分离晶体管(J3)具有耦合到第一晶体管的第一和第二电极中的第一电极的第一载流电极和耦合到第二晶体管的第一和第二电极中的第一电极的第二载流电极 控制晶体管以便响应于第一和第二信号将第一晶体管的第一和第二电极中的第一电极与第二晶体管的第一和第二电极中的第一电极电隔离,以限制第二晶体管的第一和第二电极的反向偏置电压 第一和第二晶体管之一的PN结。
    • 5. 发明申请
    • HIGH SPEED, HIGH CURRENT GAIN VOLTAGE BUFFER AND METHOD
    • 高速,高电流增益缓冲器和方法
    • WO2008028034A2
    • 2008-03-06
    • PCT/US2007077234
    • 2007-08-30
    • TEXAS INSTRUMENTS INCALENIN SERGEYSURTIHADI HENRY
    • ALENIN SERGEYSURTIHADI HENRY
    • H03F3/26
    • H03F3/26
    • An amplifying circuit which may be useful in a diamond buffer amplifier (20) or operational amplifier includes an input transistor including an emitter, a collector, and a base coupled to receive an input voltage. An adjustable current source (10) circuit is coupled between a first reference voltage and the emitter of the input transistor. A current source is coupled between a second reference voltage and the collector of the input transistor. An isolation resistor has a first terminal coupled to an output terminal of the adjustable current source circuit and a second terminal coupled to the emitter of the input transistor. A current follower circuit is coupled between the collector of the input transistor and an input terminal of the adjustable current source circuit. A feed- forward capacitor is coupled between the collector of the input transistor and the first terminal of the isolation resistor.
    • 可用于金刚石缓冲放大器(20)或运算放大器的放大电路包括输入晶体管,其包括耦合以接收输入电压的发射极,集电极和基极。 可调电流源(10)电路耦合在第一参考电压和输入晶体管的发射极之间。 电流源耦合在第二参考电压和输入晶体管的集电极之间。 隔离电阻器具有耦合到可调电流源电路的输出端的第一端子和耦合到输入晶体管的发射极的第二端子。 电流跟随器电路耦合在输入晶体管的集电极和可调电流源电路的输入端之间。 前馈电容耦合在输入晶体管的集电极和隔离电阻的第一端之间。