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Irradiacion.WebHomer1.11 - 28 Jun 2010 - 06:18 - PabloVazqueztopic end

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Irradiation of DEFET transistors with CO60 souce at Santiago

Procedure

2 chips with 30 bonded transistors will be irradiated in several steps. Biasing voltages and Adaptor Boards pin assingment can be seen in
  • BoardsLayout.xlsx: Multi Transistor biasing voltages; Adaptor Board pin assingment; Dose Setup information

Ids_Vgs curves will be done before irradiation and after each step. What we are interesting in is: Threshold Voltage, transconductance, substhreshold swing

Measuring steps from 0 to 10 Mrad (in Mrad) dose ~ 11.5 Krad/h):

  • 0.1 (9 h) I1: 24.6:14h -> 24h ; T1: 25.6:9h ->12h
  • 0.2 (9 h) I2: 25.6:12h -> 21h : T2: 28.6:9h -> 12h
  • 0.3 (9 h) I3: 28.6:12h HELP
  • 0.5 (18 h)
  • 0.8 (27 h)
  • 1.2 (27 h)
  • 1.7 (45 h)
  • 2.3 (54 h)
  • 3.0 (63 h)
  • 5.0 (180 h)
  • 7.5 (225 h)
  • 10 (225 h)

IV curves

Broken Transistor before irradiation: chip0=10, chip1=15, chip2=8

Adaptor Boards photos

  • Testing Board:

Testing Board

  • Chips_Holder Board:

Chips_Holder Board

  • Irradiation Board:

Irradiation Board
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I Attachment sort Action Size down Date Who Comment
BoardsLayout.xlsx manage 1159.6 K 03 Jun 2010 - 17:36 PabloVazquez Multi Transistor: biasing voltages; Adaptor Board: pin assignment;
chip1_25t_44r_.25s.xlsx manage 174.8 K 03 Jun 2010 - 17:32 PabloVazquez Chip 1
chip0_25t_43r_.25s.xlsx manage 200.5 K 03 Jun 2010 - 17:31 PabloVazquez Chip 0
chip2_25t_44r_250ms.xlsx manage 226.0 K 04 Jun 2010 - 12:15 PabloVazquez Chip 2
testing_board.JPG manage 341.9 K 08 Jun 2010 - 09:24 EliseoPerezTrigo Testing Board
chip_holder_board.JPG manage 367.4 K 08 Jun 2010 - 09:30 EliseoPerezTrigo Chips_Holder Board
Irradiation_board2.JPG manage 420.8 K 10 Jun 2010 - 12:11 EliseoPerezTrigo Irradiation Board
irradiation_board.JPG manage 421.0 K 08 Jun 2010 - 09:27 EliseoPerezTrigo Irradiation Board
Chip_0_1_bad.pdf manage 531.6 K 03 Jun 2010 - 17:56 PabloVazquez Broken transistors
Chip_0_1_2_bad.pdf manage 537.9 K 04 Jun 2010 - 12:13 PabloVazquez Broken transistors

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