Patent ID: 6870229
Filing Date: 2005-03-22
Classification: H01L

Abstract:
1. A diode having a first and a second terminal, the diode comprising an n-MOS transistor having a channel, a first N+ doped diffusion region at one extremity of the channel and a second N+ diffusion region at the other extremity of the channel, and a p-MOS transistor having a channel and a first P+ doped diffusion region at one extremity of the channel and a second P+ diffusion region at the other extremity of the channel, the first N+ diffusion region of the n-MOS transistor being coupled t the first P+ diffusion region of the p-MOS transistor, the gate of the n-MOS transistor being coupled to the second P+ diffusion region of the p-MOS transistor, and the gate of the p-MOS transistor being coupled to the second N+ diffusion region of the n-MOS transistor, and the second P+ diffusion region of the p-MOS transistor being coupled to the first terminal of the diode and the second N+ diffusion region of the n-MOS transistor being coupled to the second terminal of the diode, a current versus voltage characteristic of the diode being such that it has a negative slope in a reverse biased state of the diode.