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Everything about 20-Bit
Nuclear Instruments at HPXM2025 in Frascati
From June 16 to 20, 2025, the HPXM2025 conference took place at the INFN National Laboratories in Frascati. Nuclear Instruments presented its work on direct pre-amplifier sampling ADC for high-count rate and high-resolution X-ray spectroscopy
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20-bit Interleaved ADC for Direct Sampling in X-ray Spectroscopy
A novel 20-bit interleaved SAR ADC architecture enables direct digitization of preamplifier signals in high-rate X-ray spectroscopy applications. It eliminates analog reshaping stages while achieving sub-150 eV resolution at MHz-level event rates. Designed around a Zynq SoC and tested with the ARDESIA detector, the system demonstrates a robust, low-noise digital pipeline tailored for synchrotron environments and pixelated SDDs.
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