DT5771 – MCA with open FPGA

The DT5771 is a high-performance 64k Digital Multi-Channel Analyzer (MCA) designed for gamma spectroscopy. It features a high-speed 14-bit, 200 megasample-per-second (Msps) analog-to-digital converter (ADC) and offers both USB 2.0 and Gigabit Ethernet connectivity. Its web-based graphical interface makes it easy to use, allowing users to control the system and analyze spectra in real time without needing to install additional software.

The DT5771 is compatible with a wide variety of radiation detectors, including HPGe, silicon detectors, and scintillation detectors like NaI(Tl) and LaBr₃. It includes adjustable gain settings, switchable 1 kΩ or 50 Ω input termination, and both AC and DC coupling options, ensuring maximum flexibility with different detector types.

This module supports several real-time acquisition modes to suit different analysis needs. These include a standard MCA mode using trapezoidal filtering for energy spectrum analysis, as well as a Peak Detector Mode for precise measurement of signal timing and amplitude. The intuitive web interface also features Jupyter Lab, enabling advanced users to create and run custom Python scripts directly from a browser.

In addition to its digital data interfaces, the DT5771 offers GPIO ports for external triggering, and Clock/Sync I/O for synchronizing multiple units. Convenient status LEDs provide clear visual feedback on the system’s operation and health.