Beetle - a readout chip for LHCb
 

Content

ENC for Frontend Set 2c

Results of the ENC measurements done by NIKHEF, Zurich and Heidelberg (thanks to Eddy Jans for making all the plots).

Data overview table

Data measurements table as a pdf-file or postscript-file.

Comparison

Risetime

Risetime overview of BeetleFE 1.1 - Set 2c or as pdf or ps

Remainder after 25ns

Remainder after 25ns of BeetleFE 1.1 - Set 2c or as pdf or ps

Gain

The 30% higher gain measured by Heidelberg is up to now not understood

Gain overview of BeetleFE 1.1 - Set 2c or as pdf or ps

ENC

Because the noise result of Zurich and Heidelberg for large values of C tend to lie lower than a straight line fit through the data points at lower C, the datasets are splitted in two parts:

ENC for all data samples

ENC overview of BeetleFE 1.1 - Set 2c or as pdf or ps

ENC with only data up to 40pF

ENC (up to 40pF) overview of BeetleFE 1.1 - Set 2c or as pdf or ps

For this category we find:
  • Zurich 436 + 47.7 e/pF
  • H'berg 483 + 45.7 e/pF
  • NIKHEF 429 + 47.0 e/pF
   
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Letzte Änderung: 8 May 2002