MOS Varactor Subcommittee Report

1
MOS Varactor Subcommittee Report

• 3Q 2006

2
Beta Model Generation

• Decisions from 2Q meeting on model functionality
  were incorporated into beta models sent out in
  June and August 2006
• Conversion to PSP surface potential equation
• PSP gate current
• New external node in the well (bi)
• Addition of vertical resistance through gate
• Voltage dependent doping density, NB(V)

3
First Results from Beta Testing

• Jim Victory supplied the 2 beta models with PSP
  surface potential conversion and gate current
  model in June and August for testing.
• Two telecons to discuss results (19th September
  and 5th October)
• Fairly good preliminary results provided by RFMD,
  ADI, and TI. The MOS Var Subcommittee solicits
  more extensive testing.
• Positive CV fitting results
• Known deficiencies in R(V) modeling notably for
  pwell devices, validated
• Gate current, once parameters understood, gives
  good results
• Thanks to Plamen Koslav of RFMD for providing
  extensive testing, results presented in separate
  report.

4
The Future

• Next Update Q4 2006 will contain further PSP
  alignment and bug fixes.
• Q1-Q2 2007 Rev 1 model
• Completed PSP alignment
• Final gate current model formulation
• All known bugs fixed
• Documentation/Web Site Q2 2007
• QA Need to generate procedures per CMC QA
  policy.

5
Propose Ownership and Future Work Provided by Dr.
Gildenblat at ASU

• TASKS
• Drive remaining Igate finalization and PSP
  harmonization Rev1 model
• Develop full physical model for NB(V)
• Research and develop R(V) modeling
• Provide any extensions needed for differential
  device support
• Develop documentation including base extraction
  methodology
• Develop and maintain Web page
• Manage on-going synchronicity with PSP model
• Develop QA procedures per CMC standards

• COST
• 25K from 2006 budget surplus for work already
  done including support for Igate and SP
  conversions to MOS Var from PSP and Q4 work.
• 25K for 2007
• Expected deliverables in 2007
• Rev 1 model by Q2
• NB(V)
• Web page with documentation