Abstract:
A multiinput logical gate has a first resistor, and a second resistor one end of which is connected to a power source each, a current source, m pieces of transistors (m is an integer of 2 or more) the sources of which are parallel-connected to the current source, and the drain of which to the other ends of the first resistors, and m pieces of transistors the sources and drains of which are series-connected between the current source and the other ends of the second resistors. M pairs of differential input signals are inputted to the gates of the parallel-connected transistors and the gates of the series-connected transistors, respectively, and are outputted from the other ends of the first and second resistors as differential signals, respectively.
Abstract:
Various circuit techniques for implementing ultra high speed circuits use current-controlled CMOS (C MOS) logic with inductive broadbanding fabricated in conventional CMOS process technology. Optimum balance between power consumption and speed for each circuit application is achieved by combining high speed C MOS logic with inductive broadbanding /C MOS logic with low power conventional CMOS logic. The combined C MOS logic with inductive broadbanding /C MOS /CMOS logic allows greater integration of circuits such as high speed transceivers used in fiber optic communication systems.
Abstract translation:用于实现超高速电路的各种电路技术使用以常规CMOS工艺技术制造的感应宽带的电流控制CMOS(C 3 MOS)逻辑。 通过将高速C 3 MOS逻辑与感应宽带/ C 3 MOS逻辑与低功耗常规CMOS逻辑相结合,实现了每个电路应用的功耗和速度之间的最佳平衡。 具有感应宽带/ C 3 MOS / CMOS逻辑的组合式C 3 MOS逻辑允许更多地集成诸如光纤通信系统中使用的高速收发器之类的电路。
Abstract:
A common mode logic buffer device includes a current source (112) configured to provide a source current. An input stage includes a first MOS transistor pair (110) configured to generate, from the source current and based upon an input differential voltage, a differential current between two output paths. An output stage includes a second MOS transistor pair (106) configured to generate an output differential voltage based upon an effective impedance provided for the each of the two output paths. An adjustment circuit (104, 108) is configured to adjust, in response to a control signal, the effective impedance of the second MOS transistor pair (106).
Abstract:
An LVDS output is described herein that has wideband operation down to 2.5V without degrading spur performance or dramatically increasing die area. A current mirror used in a conventional LVDS output is eliminated in such as way as to reduce noise coupling and produce especially clean output signals.
Abstract:
A digital circuit comprises: a first arm including a first metal oxide semiconductor field effect transistor (M3) configured to act as a load device; a second arm including a second metal oxide semiconductor field effect transistor (M4) configured to act as a load device; and a switch (M1, M2) for selecting one of the first and second arms. Each of the first and second transistors (M3, M4) has a channel length of lOOnm or below and is biased to operate in the weak inversion regime. In an alternative circuit, each load device (M3, M4) has its bulk connected to its drain and is biased to operate in the weak inversion regime.
Abstract:
A digital circuit comprises: a first arm including a first metal oxide semiconductor field effect transistor (M3) configured to act as a load device; a second arm including a second metal oxide semiconductor field effect transistor (M4) configured to act as a load device; and a switch (M1, M2) for selecting one of the first and second arms. Each of the first and second transistors (M3, M4) has a channel length of lOOnm or below and is biased to operate in the weak inversion regime. In an alternative circuit, each load device (M3, M4) has its bulk connected to its drain and is biased to operate in the weak inversion regime.
Abstract:
The present invention provides a low swing current mode logic circuit comprising: a current mode logic block having data inputs and outputs; a pre-charging circuit for pre-charging the outputs; a dynamic current source; an evaluation circuit for evaluating the logic block during an evaluation phase; and, a feedback path arranged between the outputs and the dynamic current source which is responsive to a difference between the outputs. The simplicity of generating the low swing, achieved by the feedback which may be implemented by only two transistors, is in contrast with the complexity introduced by some methods used by other logic styles for achieving low swing.