Abstract
A regulated cascode transimpendence preamplifier based low power, multichannel, fast front-end ASIC “ANUSPARSH” is designed for readout of ~3.6 million pick up strips of RPC detector of INO-ICAL experiment. This ASIC comprises eight front-end channels, each consisting of a regulated cascode preamplifier, two stages of differential amplifier providing total gain of ~7 mV/μA and a fast leading edge discriminator with LVDS output followed by a multiplexed fast analog buffer capable of driving 50 Ω cable. The regulated cascode preamplifier is used for the first time as readout of RPC detector exhibiting good impedance matching with the detector impedance of ~50 Ω over a wide frequency range. This ASIC is fabricated in 0.35 μm mixed CMOS process and tested successfully with the RPC detector. The front-end electronics requirements of INO-ICAL RPC detector and design approach for development of ANUSPARSH ASIC are presented along with test results when interfaced to the RPC detector.
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Acknowledgments
Authors would like to thank Shri Sekhar Basu, Director, BARC; Dr. T.S. Ananthakrishnan, Head, Electronics Division, BARC; Prof. N. K. Mondal, TIFR; Dr. B. Satyanarayana, TIFR and INO collaboration for their support and encouragement.
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© 2013 Springer India
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Sukhwani, M., Pithawa, C.K., Chandratre, V.B., Veena, S., Megha, T. (2013). Regulated Cascode Preamplifier-Based Front-End Readout ASIC “ANUSPARSH” for Resistive Plate Chamber Detector. In: Chakravarthi, V., Shirur, Y., Prasad, R. (eds) Proceedings of International Conference on VLSI, Communication, Advanced Devices, Signals & Systems and Networking (VCASAN-2013). Lecture Notes in Electrical Engineering, vol 258. Springer, India. https://doi.org/10.1007/978-81-322-1524-0_11
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DOI: https://doi.org/10.1007/978-81-322-1524-0_11
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