Pre-modulation integral multichannel parallel analog information conversion circuit

The invention discloses a pre-modulation integral multichannel parallel analog information conversion circuit comprising a multichannel parallel analog information conversion circuit composed of a plurality of pseudo-random sequence generators, level switching circuits, a multiplier, low-pass filters, analog-to-digital converters, a clock generation circuit and a multiplexer. The pre-modulation integral multichannel parallel analog information conversion circuit is characterized in that a first-level pre-modulation integral circuit is arranged before the multichannel parallel analog information conversion circuit and is used for pre-reducing the frequency of an analog input signal and outputting a low-frequency signal retaining all the information of an original signal. According to the invention, as the first-level pre-modulation integral circuit is arranged before the multichannel parallel analog information conversion circuit, the frequency of the pseudo-random sequences, the low-pass filters and the analog-to-digital converters is greatly improved under the condition of ensuring that the signal retains the information of the original signal, the circuit design complexity and the power consumption are reduced and the feasibility of analog circuit realization is improved compared with a traditional multichannel parallel compressed sampling method.