Single Photon Avalanche Diodes

PDM series

Specifications @ 25 °C and 5V overvoltage

Photon Detection Efficiency @ 400 nm   24% (typical) @ 550 nm   49% (typical) @ 650 nm   37% (typical)   Dark counts (typical)     20 µm SPAD 50 µm SPAD 100 µm SPAD Non-cooled version   < 250 < 5000 < 20.000 cps Cooled version   < 25 < 100 < 250   Single photon timing resolution   Counting output, TTL signal (FWHM)   250 ps Timing output, NIM signal (FWHM)*   down to 50 ps, increases in blue/UV spectral range   After-pulsing probability typical   2.5%   Input / Output Dead time   77 ns (typical) Output signal   TTL for counting output and NIM for timing output* Output pulse rise and fall times   < 2 ns on 10 pF load Output pulse duration   20 ns (typical) Gating input   TTL control (low level gates detector off) Supply input connector   standard 3.5 mm supply socket   Supply voltage   unregulated DC, any value 5V - 12V

* Available as an option

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last updated 06.06.2008