DIGITALLY CONTROLLED ANALOGUE SIGNAL CONDITIONING CIRCUIT AND SYSTEM OF ACQUISITION OF CONDITIONED SIGNAL

The invention relates to a base analogue conditioning circuit (CCB) with full digital control, which permits selection, by adjusting an offset voltage, and scaling, by adjusting the amplification factor, of a portion of interest contained in a signal applied at the input, where the amplification factor is adjusted by means of a digital potentiometer and the offset voltage is adjusted by means of a digitally synthesised signal using a digital-to-analogue converter (1), where the input signal passes through a input stage (4) having the role of a buffer stage or preamplifier, after which it is taken over by the base analogue conditioning circuit (CCB). The invention also relates to analogue conditioning circuits consisting of cascade-connected base analogue conditioning circuits, intended to deliver one or several output signals to be used as control signals or to be converted into digital codes by means of a multi-channel analogue-to-digital converter (8) which communicates with a digital processing unit (10) which takes over the digital signal by a data bus (9) and adjusts the parameters of base analogue conditioning circuits (CCB), communicating with digital-to-analogue converter (1) and with some digital potentiometers by a digital bus (9).