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PDX20S Precision free-space photodetector
Koheron PDX20S is a precision free-space photodetector with 10 MHz bandwidth. With a noise below 50 pWrms (0.1 Hz - 10 Hz bandwidth) and a maximum input power of 8 mW, the PDX20S excels in applications such as optical power control loop or power monitoring.
295 €
Resources
Specifications
| PDX20S-1-DC-INGAAS | |
|---|---|
| Detector | |
| Detector type | InGaAs PIN photodiode |
| Photodiode active diameter | 1 mm |
| Wavelength range | 900 nm to 1700 nm |
| Optical input power | 0 mW to 8 mW |
| Photodiode peak responsivity1550 nm | 1.1 A/W |
| Transimpedance amplifier | |
| Small signal bandwidth | 0 Hz to 10 MHz at 3 dB |
| Coupling | DC |
| Transimpedance gain | 1 kV/A |
| Noise Equivalent Powerat 1 MHz | 7 pW/√Hz |
| Output impedance | 50 Ω |
| Output voltage rangehigh impedance | 0 V to 9 V |
| Output voltage range50 Ω | 0 V to 3 V |
| Output | SMA female connector |
| Power supplies | |
| Positive supply voltage | 10.5 V to 13 V |
| Negative supply voltage | -9 V to -4 V |
| Quiescent current per rail | 20 mA |
| Maximum currentpositive supply | 120 mA |
| Maximum currentnegative supply | 50 mA |
| Other | |
| Outside dimensions | 49 mm x 40 mm x 18 mm |
| Operating temperature | 0 °C to 50 °C |
| Weight | 26 g |
More Photodetectors
Functional diagram
Characterization
Small signal frequency response
Noise equivalent power (1550 nm)
Output voltage versus input optical power
The very low dark offset combined with the large output range allow linear optical power measurements over 5 decades:
