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1. 发明申请

WO2017034837A1 RAIL-TO-RAIL INPUT STAGE CIRCUIT WITH CONSTANT TRANSCONDUCTANCE 审中-公开
标题翻译：铁路轨道输入电路具有恒定的交叉
公开(公告)号：WO2017034837A1
公开(公告)日：2017-03-02
申请号：PCT/US2016/046918
申请日：2016-08-12
申请人： QUALCOMM INCORPORATED
发明人： SHEN, Liangguo , SHI, Chunlei , GUAN, Hua
IPC分类号： H03F3/45
CPC分类号： G05F3/262 , H03F3/45183 , H03F3/45246 , H03F3/45708 , H03F2203/45288 , H03F2203/45481
摘要： 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.
摘要翻译：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。

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