Speaker
Dr
Yusaku Katayose
(Yokohama National university)
Description
A front-end application specified integrated circuit (ASIC) is developed with a wide dynamic range to read out the signals from a photo-sensor like a photodiode.
The ASIC consists of a charge sensitive preamplifier, four wave-shaping circuits with different amplification
factors and an analog to digital converter(ADC) of Wilkinson-type.
To realize a wider range, the beed back capacitor of integral circuit in preamplifier can be changed from 4pF to 16pF
by two switched.
The output of a preamplifier is supplied to the four wave-shaping circuits with four gains of 1,4,16,64 to
adapt input range of ADC.
The dynamic range of four orders of magnitude is achieved with the maximum range over 10pC.
A 0.25m CMOS process (of UMC electronic CO.,LTD ) is used to fabricate an ASIC with four-channels.
In this presentation, the design and the basic performance of ASIC will be reported.
Author
Dr
Yusaku Katayose
(Yokohama National university)
Co-authors
Prof.
Makio Shibata
(Yokohama National university)
Prof.
Manobu Tanaka
(National Laboratory for High Energy Physics, KEK)
Prof.
hirokazu Ikeda
(ISAS/JAXA)
