Is this can be used as a floating forward biased diode ?

[leonken]

I found a floating varactor in cmos technology from Razavi's paper in 1999.
Is this floating varactor can be used as a floating forward biased diode in CMOS process without a latch-up problem?
Thank you!

 

[alexbsb]

mybe is ok,but the doide is p+&n-well,not the p+&n+.

 

[993066935]

I think they use the n-well process as the epita-layer, so this P+ N+ may work.

 

[leonken]

I think they use the n-well process as the epita-layer, so this P+ N+ may work.

Can you explain it more detail, or give me some documents? thank you!