SiGe BiCMOS for Liquid Argon Front End Electronics

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SiGe BiCMOS for Liquid Argon Front End
Electronics
May 4, 2007

• Mitch Newcomer, Sergio Rescia

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LAr Signal Processing for SLHC

• Its likely that front end boards for LAr will
  need to be redesigned to meet radiation
  tolerance, rate and shaping requirements for
  SLHC.
• SiGe bipolar is being explored for the inner
  detector offers a potentially ideal technology
  for a next generation front end.
• Low rb ? good noise performance
• Hi Gm/Ic ? best current gain vs power
  technology.
• Mixture of bipolar with CMOS ? excellent for
  analog design
• Lateral PNPs ?? Possibly rad hard enough
  for LAr.

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LAr Upgrade FEB baseline design
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FY07 - 08 Objectives

• Finish qualifying round of Radiation Studies with
  SCT.
• Study radiation effects on matching, noise on
  selected technology.
• Design work First Round
• Building Blocks current sources /
  references
• Preamp topologies
• Shaper block
• Input protection
• Prototype run
• Shared IBM run with SCT (8WL thru MOSIS
  90K)
• IHP??

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BNL

• Finish 8WL irradiation
• Help develop noise testing program
• Examine/develop Preamp topologies and associated
  test structures.
• Organize prototype run

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Preliminary work on Preamp
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Spice Simulations
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Preamp Linearity Optimization
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BNL manpower

• Analog Design
• Sergio Rescia (EE) - 35
• JF Pratte (EE) - 25
• SiGe Device Measurement
• R. Hackenberg - 20 (Meas. Firm/soft
  ware)
• J. Kierstead - 10 ( Gamma
  irradiation)
• S. Rescia - 15 ( Measurement/
  Org.)
• Technician - 20

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Penn

• Investigate Noise in SiGe Bipolar Devices with
  BNL.
• Understand / Design input protection structures.
• Study/design SiGe BiCMOS Shaping Blocks.
• Facilitate front end Preamp Design.
• Measure fabricated devices.

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Shaper Design Work
Reduce Power
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SiGe Resources

• People
• Mitch Newcomer 25
• Nandor Dressnandt 20
• Student (EE) 50
• Travel 3K

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Nevis

• Setting up a device measurement facility to
  participate in radiation testing program.
• Postdoc arrives in May will get started with
  visit to Penn to go over parametric testing.
• Tasks
• Proton exposure at Mass General.
• Measure devices pre/post rad

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FY08 Preliminary Budget