Linear output characteristics adjusting device of automatic gain controller and its method

摘要

The present invention relates to an apparatus for adjusting the output of an automatic gain controller having a nonlinear characteristic to a linear output characteristic, and a method for controlling the same, comprising: a PDM generator for making data output from an experimental data storage unit into a PDM signal; RC filter which converts the signal into DC voltage, and automatic gain controller whose output voltage is controlled according to the PDM signal outputted from the PDM generator, and which makes a look-up table with data obtained through experiments. A first step, a second step of determining an output value, a third step of determining a PDM value for outputting the determined output value, a fourth step of outputting the determined PDM value to the PDM generator, and PDM data corresponding to the determined output value. The output of the automatic gain controller including the fifth step of converting the output value currently output from the PDM generator into a new PDM data and outputting it. Can be adjusted to linear output characteristics.