A filter circuit and chip based on mos field effect transistor
A field effect transistor and filter circuit technology, applied in the field of filter circuits and chips, can solve the problems of not having ESD and threatening the safety of internal devices of the chip, and achieve the effect of filtering out AC interference and enhancing ESD capability.
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[0025] In order to make the purpose, technical solution and advantages of the present application clearer, some embodiments of the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.
[0026] The first embodiment of the present application relates to a filter circuit based on MOS field effect transistors. The filter circuit includes a first MOS field effect transistor and an electrostatic discharge unit.
[0027] The electrostatic discharge unit can be composed of a plurality of MOS field effect transistors, and cooperate with the first MOS field effect transistor, so that in normal operation, a MOS capacitor can be formed between the gate and the substrate of the first MOS field effect transistor as The filter capacitor makes the fi...
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