AC FLOATING-BODY EFFECTS IN SUBMICRON FULLY DEPLETED (FD) SOI NMOSFETS AND THE IMPACT ON ANALOG APPLICATIONS

We report the impact of submicron fully depleted (FD) SOI MOSFET techn ology on device ac characteristics and the resultant effects on analog circuit issues. The weak de kink and high frequency ac kink dispersio n in FD SOI still degrade circuit performance in terms of distortion a nd low-frequency noise requirements. These issues raise concerns about PD devices for mixed-mode applications. Therefore, further device opt imization such as source/drain engineering is still necessary to solve the aforementioned issues for PD SOI. On the other hand, partially de pleted SOI MOSFET with body contact structures provide an alternative technology for RF/baseband analog applications.