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    • 7. 发明申请
    • RAIL-TO-RAIL INPUT STAGE CIRCUIT WITH CONSTANT TRANSCONDUCTANCE
    • 铁路轨道输入电路具有恒定的交叉
    • WO2017034837A1
    • 2017-03-02
    • PCT/US2016/046918
    • 2016-08-12
    • QUALCOMM INCORPORATED
    • SHEN, LiangguoSHI, ChunleiGUAN, Hua
    • H03F3/45
    • G05F3/262H03F3/45183H03F3/45246H03F3/45708H03F2203/45288H03F2203/45481
    • Embodiments described herein relate to an improved circuit technique in a rail-to-rail input stage circuit utilizing non-complementary differental pairs with bias control designed to maintain a constant transconductance "gm" throughout an input common mode voltage range. The rail-to-rail input stage circuit comprises a first differential pair circuit, a level-shifted differential pair circuit coupled with the first differential pair circuit, and a constant transconductance generation circuit coupled with the level-shifted differential pair circuit. The constant transconductance generation circuit is configured to control the bias current conducting in the level-shifted differential pair circuit based on current conducting in the first differential pair circuit to maintain a constant transconductance in the rail-to-rail input stage circuit.
    • 本文所描述的实施例涉及一种利用具有偏置控制的非互补对数对的轨至轨输入级电路中的改进的电路技术,其设计成在整个输入共模电压范围内保持恒定跨导“gm”。 轨到轨输入级电路包括第一差分对电路,与第一差分对电路耦合的电平移位差分对电路,以及与电平移位差分对电路耦合的恒定跨导产生电路。 恒定跨导产生电路被配置为基于第一差分对电路中的电流导通来控制电平移位的差分对电路中的导通的偏置电流,以在轨至轨输入级电路中保持恒定的跨导。
    • 9. 发明申请
    • LOW POWER OPERATIONAL TRANSCONDUCTANCE AMPLIFIER
    • 低功率运行的交叉放大器
    • WO2016099757A1
    • 2016-06-23
    • PCT/US2015/061163
    • 2015-11-17
    • QUALCOMM INCORPORATED
    • KIRAN, Ganesh
    • H03F3/45H03F3/195H03F3/24
    • H03F1/0205H03F1/223H03F3/195H03F3/245H03F3/45179H03F3/45188H03F3/45475H03F2200/456H03F2203/45288H03F2203/45364H03F2203/45644H03F2203/45651H03H11/0427H03H19/004
    • A low power operational transconductance amplifier is disclosed. In an exemplary embodiment, an apparatus includes a transconductance stage (402) configured to convert a first input voltage signal (Vil) to first and second current signals and to convert a second input voltage signal (Vi2) to third and fourth current signals. The apparatus also includes a current amplification stage (404) configured to amplify the second current signal to generate a first amplified current signal and to amplify the fourth current signal to generate a second amplified current signal. The apparatus also includes a current summation stage (406) configured to sum together the third current signal and the first amplified current signal to generate a first output voltage signal (Vol), and to sum together the first current signal and the second amplified current signal to generate a second output voltage signal (Vo2).
    • 公开了一种低功率运算跨导放大器。 在示例性实施例中,一种装置包括跨导级(402),其构造成将第一输入电压信号(Vil)转换为第一和第二电流信号,并将第二输入电压信号(Vi2)转换为第三和第四电流信号。 该装置还包括电流放大级(404),其被配置为放大第二电流信号以产生第一放大电流信号并放大第四电流信号以产生第二放大电流信号。 该装置还包括电流求和级(406),其被配置为将第三电流信号和第一放大电流信号相加在一起以产生第一输出电压信号(Vol),并将第一电流信号和第二放大电流信号 以产生第二输出电压信号(Vo2)。