LED Driver For High-Speed Optical Communications Based On Linear Modulations

This invention relates to a light emitting diode driving circuit (101) for use in an optical transmitter (100) comprising: a high-speed signal path (102) comprising a high-speed trans-conductance amplifier (114) configured for a linear transformation of an input signal to an output signal for linear modulation of a light emitting diode (110), and a low-frequency control path (103) configured for generating a trans-conductance (115) in dependence of a low-frequency component of the input signal (106), and wherein the low-frequency control path (103) is configured for controlling the trans-conductance (116) of the high-speed trans-conductance amplifier (114). 本发明涉及种用于光发射机(100)的发光二极管驱动电路(101)，包括：高速信号路径(102)，包括高速跨导放大器(114)和低频控制路径(103)，其中，该高速跨导放大器配置用于将输入信号线性转换为输出信号，从而用于发光二极管(110)的线性调制，其中，该低频控制路径配置为根据输入信号(106)的低频分量产生跨导(115)，并且其中，低频控制路径(103)配置为控制高速跨导放大器(114)的跨导(116)。