Folding broadband high-precision attenuator

The invention relates to the fields of integrated circuit technology, analog-to-digital conversion circuits and the like, and discloses a folding broadband high-precision attenuator which adopts a switch type attenuation framework and comprises six attenuation units, and the six attenuation units are respectively two ST type structures, two T type structures and two n type structures; from input to output, a first ST-type structure is connected with a first T-type structure, the first T-type structure is connected with a first n-type structure, the first n-type structure is connected with a second n-type structure, the second n-type structure is connected with a second T-type structure, and the second T-type structure is connected with a second ST-type structure; an inductance network with an adjustable Q value is introduced between the two n-shaped structures, so that the precision of the attenuator is improved; and during layout, the structures on the two sides are arranged in a folding manner by taking the