Technical Report: 28nm UTBB FDSOI Transistor Test Structure Design and Characterization (ICI-333)

Technical Report: 28nm UTBB FDSOI Transistor Test Structure Design and Characterization (ICI-333)
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Description

This report describes design and characterization of transistor test structures designed in September-October 2013 in the 11 metal + Alucap version of the 28nm UTBB (Ultra Thin Body and BOX) high K metal gate FDSOI (FullyDepleted SOI) CMOS process from STMicroelectronics. Unlike in any other planar CMOS, SOI, or FinFET process, this technology allows either n- or p-type wells to be placed below the buried oxide (BOX), in a deep nwell. The p- and n-type wells act as a second gate from which the threshold voltage, IDS, gm, fT and fMAX characteristics of p-MOSFETs and n-MOSFETs can be independently controlled.

The main goals of this investigation were to:

  • Compare the high frequency performance of 28nm FDSOI MOSFETs with that of 28nm LP CMOS devices
  • Understand the unique features of this technology (second gate) and how it can be best used in mmwave, highspeed digital and silicon photonics circuits

The report includes high-frequency transistor layout design guidelines, and device and circuit measurement results.

Licensing Requirements or Restrictions

You may access this technology if your university site has signed the STMicroelectronics Non Disclosure Agreement. To find out if your university has signed this agreement, see the University List for STM NDA 28nmFDSOI Nov_5_2014.

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