Development of wide range charge integration application specified integrated circuit for photo-sensor

作者：Katayose Yusaku^*; Ikeda Hirokazu; Tanaka Manobu; Shibata Makio

来源：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment , 2013, 699: 124-128.

DOI：10.1016/j.nima.2012.04.079

• ASIC
• Photo-sensor
• Wide range read-out
• Cosmic ray calorimeter

A front-end application specified integrated circuit (ASIC) is developed with a wide dynamic range amplifier (WDAMP) to read-out signals from a photo-sensor like a photodiode. The WDAMP ASIC consists of a charge sensitive preamplifier, four wave-shaping circuits with different amplification factors and Wilkinson-type analog-to-digital converter (ADC). To realize a wider range, the integrating capacitor in the preamplifier can be changed from 4 pF to 16 pF by a two-bit switch. The output of a preamplifier is shared by the four wave-shaping circuits with four gains of 1, 4, 16 and 64 to adapt the input range of ADC. A 0.25-mu m CMOS process (of UMC electronics CO., LTD) is used to fabricate the ASIC with four-channels. The dynamic range of four orders of magnitude is achieved with the maximum range over 20 pC and the noise performance of 0.46 fC + 6.4 x 10(-4) fC/pF.

• 出版日期2013-1-21