InGaAs free-space photodetector
Koheron PDX10S-INGAAS is an InGaAs free-space photodetector with 5 kV/A transimpedance gain and 50 MHz bandwidth. With a noise-equivalent power spectral density of 2 pW/√Hz at 1550 nm and up to 8 V DC output voltage, the PDX10S-INGAAS is the perfect candidate for applications requiring high dynamic range.
| Quantity | Price |
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Specifications
| PDX10S-5-DC-INGAAS | PDX10S-5-DC-LWINGAAS | |
|---|---|---|
| Detector | ||
| Detector type | InGaAs PIN photodiode | InGaAs PIN long wavelength photodiode |
| Photodiode active diameter | 300 µm | 300 µm |
| Wavelength range | 900 nm to 1700 nm | 1000 nm to 2100 nm |
| Optical input power | 0 mW to 1.5 mW | 0 mW to 1.5 mW |
| Photodiode peak responsivity | 1.1 A/W (at 1550 nm) | 1.2 A/W (at 1900 nm) |
| Transimpedance amplifier | ||
| Small signal bandwidth | 0 Hz to 50 MHz at 3 dB | 0 Hz to 40 MHz at 3 dB |
| Coupling | DC | DC |
| Transimpedance gain | 5 kV/A | 5 kV/A |
| Noise Equivalent Power(at 1 MHz) | 2 pW/√Hz | 2 pW/√Hz |
| Output impedance | 50 Ω | 50 Ω |
| Output voltage range(high impedance load) | 0 V to 8 V | 0 V to 8 V |
| Output voltage range(50 Ω load) | 0 V to 4 V | 0 V to 4 V |
| Output | SMA female connector | SMA female connector |
| Power supplies | ||
| Positive supply voltage | 10.5 V to 13 V | 10.5 V to 13 V |
| Negative supply voltage | -9 V to -4 V | -9 V to -4 V |
| Quiescent current per rail | 40 mA | 40 mA |
| Maximum current(positive supply) | 130 mA | 130 mA |
| Other | ||
| Outside dimensions | 49 mm x 40 mm x 18 mm | 49 mm x 40 mm x 18 mm |
| Operating temperature | 0 °C to 50 °C | 0 °C to 50 °C |
| Weight | 26 g | 26 g |
More Photodetectors
Functional diagram
Output power spectral density
The power spectral density of the PDX10S-INGAAS output was measured for different incident optical powers. For the PDX10S-5-DC-INGAAS the optical source is a 1300 nm LED driven by a Koheron DRV110-A-1200 laser driver, and for the PDX10S-5-DC-LWINGAAS the optical source is a 1550 nm DFB laser driven by a Koheron CTL101-1-B-200 laser controller. Power spectrum is measured using the Koheron ALPHA250 FFT analyzer.
Small signal frequency response
Noise equivalent power
The figure below shows the noise-equivalent power spectral density at a wavelength of 1550 nm.
