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    • 1. 发明授权
    • Slew rate boost circuitry and method
    • 压摆率升压电路和方法
    • US06437645B1
    • 2002-08-20
    • US09784724
    • 2001-02-15
    • Vadim V. IvanovDavid R. Baum
    • Vadim V. IvanovDavid R. Baum
    • H03F345
    • H03F3/45372H03F3/3028H03F3/45192H03F3/45269H03F3/45273H03F3/45291H03F3/45367H03F2200/331H03F2203/30084H03F2203/30096H03F2203/30117H03F2203/30129H03F2203/30151H03F2203/30156H03K17/04106
    • A differential input circuit (1) includes circuitry for generating slew boost currents to be supplied to an output stage of an operational amplifier. The differential input circuit (1) includes a differential current steering circuit including a first transistor (M2) having a gate coupled to receive a first input signal (Vin−), a second transistor (M3) having a gate coupled to receive a second input signal (Vin+), and a constant current source (20) coupled to sources of the first and second transistors, and providing first (4 or 6) and second (5 or 7) outputs of the differential input circuit coupled to the first (M2) and second (M3), respectively. A first slew current circuit is operated in response to the first input signal (Vin−) to produce a first slew boost current which is introduced into a current summing conductor (9) coupled to the sources of the first (M2) and second (M3) transistors and the constant current source (20). A second slew current circuit is operated in response to the second input signal (Vin+) to produce a second slew boost current which is introduced into the current summing conductor (9), wherein the first and second slew boost currents boosting currents flow through the second (M3) and first (M2) transistors, respectively.
    • 差分输入电路(1)包括用于产生要提供给运算放大器的输出级的转换升压电流的电路。 差分输入电路(1)包括差动电流控制电路,其包括具有耦合以接收第一输入信号(Vin-)的栅极的第一晶体管(M2),第二晶体管(M3),其栅极耦合以接收第二输入 信号(Vin +)和耦合到第一和第二晶体管的源极的恒流源(20),以及提供耦合到第一(M2)的差分输入电路的第一(4或6)和第二(5或7) )和第二(M3)。 响应于第一输入信号(Vin-)操作第一回转电流电路以产生第一压摆升压电流,其被引入耦合到第一(M2)和第二(M2)的源极的电流求和导体(9) )晶体管和恒流源(20)。 响应于第二输入信号(Vin +)操作第二回转电流电路以产生被引入到电流求和导体(9)中的第二压摆升压电流,其中第一和第二压摆升压电流升压电流流过第二 (M3)和第一(M2)晶体管。
    • 6. 发明申请
    • SLEW RATE BOOST CIRCUITRY AND METHOD
    • SLEW RATE升压电路和方法
    • US20020109547A1
    • 2002-08-15
    • US09784724
    • 2001-02-15
    • TEXAS INSTRUMENTS INCORPORATED
    • Vadim V. IvanovDavid R. Baum
    • H03F003/45
    • H03F3/45372H03F3/3028H03F3/45192H03F3/45269H03F3/45273H03F3/45291H03F3/45367H03F2200/331H03F2203/30084H03F2203/30096H03F2203/30117H03F2203/30129H03F2203/30151H03F2203/30156H03K17/04106
    • A differential input circuit (1) includes circuitry for generating slew boost currents to be supplied to an output stage of an operational amplifier. The differential input circuit (1) includes a differential current steering circuit including a first transistor (M2) having a gate coupled to receive a first input signal (Vinnull), a second transistor (M3) having a gate coupled to receive a second input signal (Vinnull), and a constant current source (20) coupled to sources of the first and second transistors, and providing first (4 or 6) and second (5 or 7) outputs of the differential input circuit coupled to the first (M2) and second (M3), respectively. A first slew current circuit is operated in response to the first input signal (Vinnull) to produce a first slew boost current which is introduced into a current summing conductor (9) coupled to the sources of the first (M2) and second (M3) transistors and the constant current source (20). A second slew current circuit is operated in response to the second input signal (Vinnull) to produce a second slew boost current which is introduced into the current summing conductor (9), wherein the first and second slew boost currents boosting currents flow through the second (M3) and first (M2) transistors, respectively.
    • 差分输入电路(1)包括用于产生要提供给运算放大器的输出级的转换升压电流的电路。 差分输入电路(1)包括差动电流控制电路,其包括具有耦合以接收第一输入信号(Vin-)的栅极的第一晶体管(M2),第二晶体管(M3),其栅极耦合以接收第二输入 信号(Vin +)和耦合到第一和第二晶体管的源极的恒流源(20),以及提供耦合到第一(M2)的差分输入电路的第一(4或6)和第二(5或7) )和第二(M3)。 响应于第一输入信号(Vin-)操作第一回转电流电路以产生第一压摆升压电流,其被引入耦合到第一(M2)和第二(M2)的源极的电流求和导体(9) )晶体管和恒流源(20)。 响应于第二输入信号(Vin +)操作第二回转电流电路以产生被引入到电流求和导体(9)中的第二压摆升压电流,其中第一和第二压摆升压电流升压电流流过第二 (M3)和第一(M2)晶体管。