The SiTek Standard PSD (Position Sensing Detector) has high resolution, fast response and outstanding linearity. It is used in a wide variety of applications, most of them utilizing light sources in the visible or near-infrared part of the spectrum. The spectral range covers the region 400 – 1100 nm. Thanks to SiTek’s proprietary AR-coating, optimized around 860 nm, a reflection loss of only 2% is achieved around the responsivity peak. Most of the detectors have a cover window to avoid handling damages.
Position Sensing Detectors (PSD)
The PSD (Position Sensing Detector) is an opto-electronic device which converts an incident light spot into continuous position data. It provides outstanding resolution, fast response, excellent linearity for a wide range of light intensities and also simple operating circuits.
There are two main types of PSDs available: one-dimensional and two-dimensional.
Principales caractéristiques
- Convertit la position d’un point lumineux ou d’une source de rayonnement en courants de signal
- Excellente résolution de position et linéarité
- Large gamme de réponse spectrale
- Fonctionne avec une large gamme d’intensités lumineuses ou de rayonnement
- Temps de réponse court
- Mesure simultanément l’intensité et la position de la lumière ou du rayonnement
- Indépendant de la mise au point du point lumineux ou du rayonnement
- Grande plage dynamique
Données de référence rapides
| Position non-linearity | +/-0.3% |
| Detector resistance | 10 kohm |
| Part. No | Description | Active area (mm) | Leakage current (nA) | Noise current (pA/Hz) | Capacitance (pF) | Rise time (10-90%) (µs) | Standard package |
|---|---|---|---|---|---|---|---|
| S2 – 0001 | 2L2_MP1 | 2×2 | 50 | 1,3 | 7 | 0,03 | TO-8 |
| S2 – 0032 | 2L2_CP4 | 2×2 | 50 | 1,3 | 7 | 0,03 | 4-pin ceramic |
| S2 – 0002 | 2L4_MP1 | 4×4 | 50 | 1,3 | 20 | 0,08 | TO-8 |
| S2 – 0024 | 2L4_CP5 | 4×4 | 50 | 1,3 | 20 | 0,08 | 4-ceramic |
| S2 – 0184 | 2L4_SU71 | 4×4 | 50 | 1,3 | 20 | 0,08 | SMD |
| S2 – 0003 | 2L10_SU7 | 10×10 | 100 | 1,3 | 90 | 0,4 | Substrate |
| S2 – 0033 | 2L10_CP6 | 10×10 | 100 | 1,3 | 90 | 0,4 | 4-pin ceramic |
| S2 – 0185 | 2L10_SU72 | 10×10 | 100 | 1,3 | 90 | 0,4 | SMD |
| S2 – 0004 | 2L20_SU9 | 20×20 | 200 | 1,5 | 360 | 1,6 | Substrate |
| S2 – 0023 | 2L20_CP7 | 20×20 | 200 | 1,5 | 360 | 1,6 | 4-pin ceramic |
| S2 – 0196 | 2L45_SU24 | 45×45 | 400 | 1,5 | 1600 | 7,0 | Substrate |
PSD with Enhanced UV respons
| Part. No | Description | Active area (mm) | Leakage current (nA) | Noise current pA/Hz | Capacitance (pF) | Rise time (10-90%) (µs) | Standard package |
|---|---|---|---|---|---|---|---|
| S2 – 0030 | 2L2UV_MP1 | 2 x 2 | 50 | 1,3 | 7 | 0,03 | TO-8 |
| S2 – 0006 | 2L4UV_MP1 | 4 x 4 | 50 | 1,3 | 20 | 0,08 | TO-8 |
| S2 – 0016 | 2L10UV_SU7 | 10 x 10 | 100 | 1,3 | 90 | 0,4 | Substrate |
| S2 – 0034 | 2L20UV_SU9 | 20 x 20 | 200 | 1,5 | 360 | 1,6 | Substrate |
Common data for all SiTek PSDs
| Thermal drift, typical | 20 ppm/°C for 1L-series and 40 ppm/°C for 2L-series |
| Bias voltage | 5 – 20 V |
| Maximum operating temp. | 70° C |
| Maximum storage temp. | 100° C |
Domaines d’application
Application areas using SiTek PSD include non-contact distance measurement systems based on triangulation, alignment and surface level measurement, position and motion measurement, optical spectrum analysis, three-dimensional machine vision for contour mapping, and angle measurement systems.
Solutions sur mesure
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