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IDeF-X ECLAIRs: A CMOS ASIC for the readout of Cd(Zn)Te ...

IDeF-X ECLAIRs: A CMOS ASIC for the readout of Cd(Zn)Te ...

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<strong>IDeF</strong>-X <strong>IDeF</strong> X <strong>ECLAIRs</strong>: A <strong>CMOS</strong> <strong>ASIC</strong> <strong>for</strong> <strong>the</strong> <strong>readout</strong> <strong>of</strong> <strong>Cd</strong>(<strong>Zn</strong>)<strong>Te</strong><br />

Detectors <strong>for</strong> <strong>the</strong> SVOM mission.<br />

O. Gevin, P.Baron, X. Coppolani, E. Delagnes, F.Daly, O. Limousin, F. Lugiez,<br />

A.Meuris,F.Pinsard<br />

New <strong>CMOS</strong> ultra low noise, rad-hard rad hard mixed circuit optimized <strong>for</strong> <strong>the</strong> <strong>readout</strong> <strong>of</strong><br />

low capacitive(2-5pF) and low dark current (1-1000pA) <strong>Cd</strong>(<strong>Zn</strong>)<strong>Te</strong> detectors.<br />

Designed <strong>for</strong> <strong>the</strong> X-ray/gamma-ray 2D coded mask imaging telescope <strong>of</strong> <strong>the</strong><br />

SVOM/<strong>ECLAIRs</strong> satellite.<br />

Bias voltage<br />

Typical power consumption<br />

Polarity<br />

Conversion factor<br />

Dynamic range (charge)<br />

Dynamic range <strong>of</strong> <strong>the</strong><br />

energy discrimination<br />

threshold<br />

3.3 V<br />

96 mW<br />

Both<br />

170-200 mV/fC<br />

0 50 ke- (220 keV)<br />

210 e - 4 ke -<br />

5 th NDIP Conference. June 15-20, 2008. Aix-les-Bains FRANCE<br />

1


Noise<br />

ENC floor = 35 e- +6.5 e-/pF<br />

Energy Discrimination<br />

<strong>IDeF</strong>-X <strong>IDeF</strong> X <strong>ECLAIRs</strong>: Main results<br />

LTH = 4keV@10pF Noise events rate

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