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The design of a radiation-hard dual channel 12-bit 40 MS/s pipeline ADC withextended dynamic range is presented, for use in the readout electronics upgradefor the ATLAS Liquid Argon Calorimeters at the CERN Large Hadron Collider. Thedesign consists of two pipeline A/D channels with four MultiplyingDigital-to-Analog Converters with nominal 12-bit resolution each. The design,fabricated in the IBM 130 nm CMOS process, shows a performance of 68 dB SNDR at18 MHz for a single channel at 40 MS/s while consuming 55 mW/channel from a 2.5V supply, and exhibits no performance degradation after irradiation. Variousgain selection algorithms to achieve the extended dynamic range are implementedand tested.

journal of instrumentation

A Radiation-Hard Dual Channel 4-bit Pipeline for a 12-bit 40 MS/s ADC  Prototype with extended Dynamic Range for the ATLAS Liquid Argon Calorimeter  Readout Electronics Upgrade at the CERN LHC