ELECTRONIC CIRCUIT PERFORMING GAIN CONTROL AND GAIN COMPRESSION TO IMPROVE CHARACTERISTICS OF ANALOG OUTPUT AND ELECTRONIC DEVICE INCLUDING SAME

摘要

The present invention provides an electronic circuit including a peak detector, a gain controller, and a compressor. The peak detector detects a peak level from a digital input. The gain controller outputs a digital gain in connection with increasing the peak level to a target level. The target level is lower than or equal to a maximum level allowed in a digital domain and is higher than the peak level. The compressor supplies a compressed gain to be outputted as a digital gain to the gain controller based on the detected peak level. In a compression section where the peak level is higher than a threshold level, the outputted digital gain increases as the peak level decreases. The compressor generates the compressed gain to make the ratio of an increase in the outputted digital gain to a decrease in the peak level in the compression section smaller than a reference ratio. According to the present invention, the electronic circuits characteristics are improved.;COPYRIGHT KIPO 2019