What process technology is the ATF55143?

[skatefast08]

What process technology is the ATF55143? I noticed a lot of papers will describe the type of process technology being used for their design, for example 0.25um, 130nm process technology for the type of transistor being used in an LNA, MIXER, Oscillator design. What process technology would be the ATF55143 transistor?

 

[FvM]

The datasheet tells it has 400 µ gate width.

Generally, I guess you find the requested information in scientific papers. An industrial manufacturer isn't necessarily motivated to tell you process details, unless they matter for product specification.

 

[biastee]

I concur with FvM that the information can be found in the scientific papers of that era, one of which is this: Y. H. Chow, et al, "A 1V, 0.9dB Noise-Figure High Linearity LNA MMIC for Concurrent GPS Handset application".

 

[mtwieg]

What process technology is the ATF55143? I noticed a lot of papers will describe the type of process technology being used for their design, for example 0.25um, 130nm process technology for the type of transistor being used in an LNA, MIXER, Oscillator design. What process technology would be the ATF55143 transistor?

The ATF55143 is a GaAs MESFET. So you can't implement one in any standard CMOS process. The datasheet says that its gate width is 400um, if that helps...

 

[vfone]

The figure at page 16 of the datasheet tells you what process the LNA use.

 

[biastee]

The figure at page 16 of the datasheet tells you what process the LNA use.

Although the device model utilized the MESFET library component, the pg 1 of the datasheet mentioned "enhancement PHEMT", not once but thrice. I think the reason behind the choice was that the ADS of that era (early 2000) didn't have a PHEMT component. However, earlier devices from this manufacturer were indeed MESFETs (below).
ATF-1x series 0.25 um MESFET
ATF-2x series 0.25 um MESFET
From 1999 onward, depletion PHEMT was introduced, ATF-3x series. This was followed by enhancement PHEMT, ATF-5x series in 2002.
The OP asked what the gate length is. The answer can be found in the paper linked in my previous post.