LTE3401H allowed power at the output

[NirAlon]

Hello all,

In my design, I use the LTE3401H at 3V.

There is a RX path and TX path with maximum +13dBm TX power

The LNA is always on, also during TX.

The RF isolation of the RF switch of about -20dB from TX to RX path, so actually there is a -7dBm of power reaching to the LNA output during TX.

Is that ok?

Should I refer to maximum output power values in order to answer this question?

Thanks!

Nir

[ErikaC]

Hello,

I suppose the S12 is asked in Gain mode!
Derived from the Sparameters we see:

In DS we see typ. -30dB, I do not have data on the spread on this. Expect it to be limited.

[NirAlon]

Hi Erika,

Just to be clear, I'm asking what is the allowed power at the LNA output, resulting from TX power -20dB of RF switch isolation.

your answer was referring to this situation?

Thanks

Nir

[ErikaC · Accepted solution]

Hello,

Yes, I refer to S12, which is the reverse voltage gain.