Electrostatic protection circuit of CLAMP type
An electrostatic protection and circuit technology, applied in the field of electrostatic protection circuits, can solve the problem that electrostatic protection circuits cannot be simulated and run, and achieves the effect of saving capital cost and time cost and improving the success rate
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[0039] The present invention will be further described below with reference to the drawings and embodiments.
[0040] Such as image 3 As shown, the invention provides a CLAMP type electrostatic protection circuit (the process used in the electrostatic protection circuit is 28nm; the electrostatic voltage is equal to VDD, VDD is 3.3V), and the electrostatic protection circuit is provided with a discharge circuit containing an NMOS tube , The bleeder circuit uses the sudden return conduction of the NMOS tube to discharge the electrostatic voltage. The working voltage of the NMOS tube is lower than the electrostatic voltage. The electrostatic protection circuit can be simulated by simulation software to obtain the operating parameters of the electrostatic protection circuit to ensure the first The success rate of sub-streaming.
[0041] The electrostatic protection circuit includes a first capacitor C1, a second capacitor C2, a third capacitor C3, a first resistor R1, a second resist...
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