| 摘要 |
A light-emitting device driving circuit. The circuit uses an adaptive feedback control circuit to control the gain of a driving circuit and set the modulation current output of the driving circuit, so as to automatically adjust the differential gain stage to the optimal gain and obtain the optimal current output waveform under any operating condition, and further to eliminate overshoot and duty cycle distortion. The light-emitting device driving circuit includes a tunable gain-controlled differential amplifier; a first differential output stage and a negative feedback control circuit. The negative feedback control circuit further includes a detection circuit, a comparison circuit and a second differential output stage.
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