Title of article
Design and results from the APV25, a deep sub-micron CMOS front-end chip for the CMS tracker
Author/Authors
French، نويسنده , , M.J. and Jones، نويسنده , , L.L. and Morrissey، نويسنده , , Q. and Neviani، نويسنده , , A. and Turchetta، نويسنده , , R. and Fulcher، نويسنده , , J. and Hall، نويسنده , , G. and Noah، نويسنده , , Susan E. and Raymond and Schaak، نويسنده , , M. and Cervelli، نويسنده , , G. and Moreira، نويسنده , , P. and Marseguerra، نويسنده , , G.، نويسنده ,
Pages
7
From page
359
To page
365
Abstract
The APV25 is a 128-channel analogue pipeline chip for the readout of silicon microstrip detectors in the CMS tracker at the LHC. Each channel comprises a low noise amplifier, a 192-cell analogue pipeline and a deconvolution readout circuit. Output data are transmitted on a single differential current output via an analogue multiplexer. The chip is fabricated in a standard 0.25 μm CMOS process to take advantage of the radiation tolerance, lower noise and power, and high circuit density. Experimental characterisation of this circuit shows full functionality and good performance both in pre- and post-irradiation (20 Mrad) conditions. The measured noise is significantly reduced compared to earlier APV versions. A description of the design and results from measurements prior to irradiation are presented.
Keywords
Tracker , front end , low noise , CMS , Deep submicron , LHC , CMOS
Journal title
Astroparticle Physics
Record number
2015355
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