CSTIC 2024
SPAD-based line sensor IC for chemiluminescence assays in microfluidic channels
Alexander Zimmer (1), Benjamin Saft (2), Maximilian Wiener (2), Jakob Hampel (2), Mirjam Skadell (1), and Eric Schäfer (2)
(1) X-FAB Global Services GmbH, Erfurt, Germany
(2) IMMS Institut für Mikroelektronik- und Mechatronik-Systeme gemeinnützige GmbH (IMMS GmbH), Ilmenau, Germany
The contributions is on a SPAD-based line sensor IC for chemiluminescence assays in microfluidic channels. The authors jointly developed a novel microchip architecture for a single-photon avalanche diode (SPAD)-based line sensor tailored for in-vitro diagnostics. Their work describes the specific design and optimization aspects of SPADs, including active area maximization and dark count rate reduction while maintaining a high photon detection probability.
The chip architecture features a high-density SPAD sensor array (192 rows) with hot pixel calibration for improved SNR. It supports row-wise pulse counting, adjustable measurement intervals, on-chip SRAM for data storage, ALU with memory-saving bfloat16 encoding, and interfacing via I2C and QSPI.
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Project
KODIAK
IMMS researches image sensors for chemiluminescence assays with Thuringian industry and institutes from Erfurt-Südost and Jena
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Dipl.-Hdl. Dipl.-Des. Beate Hövelmans
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