Maximum Voltage a CMOS can withstand

[arifsobhan]

For a 0.13 um CMOS circuit, how large ac signal swing an NMOS/PMOS can withstand for example in a T/R switch?

 

[dick_freebird]

CMOS RF switches tend to use stacked devices on SOI
to get high power handling and linearity. I would not
expect more than about 1.2V nominal DC rating, maybe
1.3-ish DC max. What kind of AC "bonus" you can claim
would depend a lot on how the device behaves at the
limits - linearity matters, isolation matters, in addition
to simple reliability (which wants RF HTOL testing to
determine, and this is unlikely to be found in "digital"
process collateral - you might however deduce some
things from some RF-CMOS foundry documentation
(if they were sharing it with you - they tend to want
a relationship established) or publications from RF
conferences.

You would not likely use PMOS in the RF path of a
RF switch, unless your idea of RF is well below 1GHz
or you anticipate a DC pedestal that requires more
than a NMOS element can give you. For area, NMOS
always wins and for symmetric ground referred RF
signals, NMOS suffices.

 

[arifsobhan]

Thank you for the reply. However, i am looking for this information over internet, but did not find. I know it will depend on performance parameters. But the problem is if i give a signal more than 30 dBm at a transceiver input, will such MOSs withstand such high power?