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|
Single Photon Counting Module |
τ-SPAD |
Specifications at 25°C
| Spectral range |
400 nm - 1100 nm |
| Active area diameter |
150 µm |
| Photon timing resolution* |
350 ps - 800 ps (FWHM, depending on module, wavelength and signal rate) |
| Afterpulsing probability (0 to 500 ns)* |
< 1 % (typical) |
| Dead time |
< 60 ns (typical) |
| Fiber connector type (optional) |
FC/PC |
| Dark count rate |
| τ-SPAD-20 |
< 20 cps (available upon request) |
| τ-SPAD-50 |
< 50 cps |
| τ-SPAD-100 |
< 100 cps |
| Photon detection efficiency* (typical values, without fiber connector) |
| @ 405 nm |
20 % |
| @ 470 nm |
45 % |
| @ 670 nm |
75 % |
| @ 890 nm |
35 % |
| Losses due to fiber connector: approx. 10% |
| Input / Output |
| NIM output |
| Pulse width |
15 ns - 25 ns |
| Pulse amplitude |
-0.8 V to -1 V (into 50 Ohms) |
| Connector type |
SMA |
| TTL output |
| Pulse width |
15 ns - 25 ns |
| Pulse amplitude |
> 2.4 V (into 50 Ohms) |
| Connector type |
Lemo, type EPS.00.250 |
| Gating input |
| Input voltage |
TTL control, TTL high (>2.4 V) enables counting |
| Response time |
disable: < 40 ns (typ. 20 ns); enable: < 100 ns (typ. 85 ns) |
| Connector type |
SMA |
| Operating conditions |
| Supply voltage |
12 V |
| Supply current |
1.5 A (at turn on), 0.3 A (at 1 Mcps) |
| Operating temperature |
10 °C - 40 °C |
| * measured by illuminating < 30 µm in the center of the active area |
Typical detection efficiency vs. wavelength (without fiber connector)
All Information given here is reliable to our best knowledge. However, no responsibility is assumed for possible inaccuracies or omissions. Specifications and external appearances are subject to change without notice.
© PicoQuant GmbH, 1998 - 2012
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