Low Vt and Native Device

[ccw27]

native device

What is the difference between Low Vt and Native device? I think the only difference is that the Vth of Native device is lower than the low Vt device. Is there any only differences?

Thanks

 

[maxwellequ]

native vt

During the fabrication of a transistor there is a Threshold Adjust Implant that increases the Vt of the transistor (it is basically a small doped region at the interface between the substrate and the oxide). The Vt is adjusted by playing with this implant, originating several devices with different Vt's, in the same technology.

Native devices do not have this implant. As far as I know this is the main difference.

 

[yibinhsieh]

native vt device

Low Vt device needs extra mask and Native Device doesn't nees extra mask.

Native device is a device with vth<0. Low Vt device is a device with vth>0.

But Low Vt device's vth is much smaller than the normal device.

Yibin.

 

[sgperzoid]

low vt

What is the difference between Low Vt and Native device? I think the only difference is that the Vth of Native device is lower than the low Vt device. Is there any only differences?

Thanks

as for schemetic understanding, I think this is true and enough for the designer