LED Drive circuit and light transmission module therewith
A technology of light-emitting diodes and driving circuits, applied in the field of optical transmission modules, can solve problems such as difficulty in very high-speed operation, and achieve the effects of shortening the leading edge time and suppressing the narrowing of the optical pulse width.
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[0030] Next, we describe the embodiment of the present invention with reference to the figures.
[0031] 1st embodiment
[0032] figure 1 A light emitting diode drive circuit according to the first embodiment of the present invention is shown. Such as figure 1 As shown, the input terminals of the pulse current generating circuit 3 and the pulse shaping circuit 16 are connected to the input terminal 32, and the input terminals of the first current switch circuit 2 and the discharge circuit 5 are connected to the output terminal of the pulse shaping circuit 16. The anode and cathode of LED1 are connected to the output end of the discharge circuit 5, and the output ends of the pulse current generating circuit 3 and the first current switch circuit 2 are connected to the cathode of the LED1. In this way, the first current switch circuit 2 is connected in series to the LED1, the discharge circuit 5 is connected in parallel to the LED1, and the pulse current generating circuit ...
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