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Free-space logarithmic photodetector

PRODUCTS > PHOTONICS > PHOTODETECTORS > FREE-SPACE LOGARITHMIC PHOTODETECTOR
PDX10R Free-space logarithmic photodetector
PDX10R Free-space logarithmic photodetector PDX10R Free-space logarithmic photodetector frequency response

Koheron PDX10R is a logarithmic photodetector for free-space optical power measurements. In addition to two analog outputs log(A) and log(B), it provides the log-ratio log(A/B) with an adjustable offset and two gain settings (x1 and x10). The PDX10R provides a fully-analog solution for direct absorption measurement in spectroscopy setups.
For fiber-coupled photodiodes, see Koheron PD10R logarithmic photodetector.

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Specifications

PDX10R-D-INGAAS PDX10R-D-SI
Detector
Detector type Dual InGaAs PIN photodiodes Dual Si PIN photodiodes
Active diameter 1 mm 800 µm
Wavelength range 900 nm to 1700 nm 320 nm to 1000 nm
Optical input power 1 nW to 5 mW 500 pW to 4 mW
Photodiode peak responsivity 1.1 A/W at 1550 nm 0.55 A/W at 800 nm
Logarithmic amplifier
Small signal bandwidth(at 3 dB, input current > 3 µA) 600 kHz 600 kHz
Logarithmic slope 300 mV/decade 300 mV/decade
Intercept photocurrent 100 pA 100 pA
Output impedance 1 kΩ 1 kΩ
Power supplies
Supply voltage 3.3 V to 13 V 3.3 V to 13 V
Quiescent current 11 mA 11 mA
Maximum current 40 mA 40 mA
Other
Outside dimensions 49 mm x 40 mm x 16 mm 49 mm x 40 mm x 16 mm
Operating temperature 0 °C to 50 °C 0 °C to 50 °C
Weight 22 g 22 g

More Photodetectors

Characterization

Frequency response

The figure below shows the frequency response of the detector with Si photodiodes for several input optical powers.

PDX10R-D-SI Free-space logarithmic photodetector frequency response
PDX10R-D-SI frequency response
PDX10R-D-INGAAS Free-space logarithmic photodetector frequency response
PDX10R-D-INGAAS frequency response

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Ordering codes

PRODUCT NUMBER ATTRIBUTE
PDX10R-D-SI Photodiodes Si
PDX10R-D-INGAAS Photodiodes InGaAs

Export information

PRODUCT NUMBER COUNTRY OF ORIGIN HS CODE HTSUS ECCN
PDX10R-D-SI France 85414900 8541499500 EAR99
PDX10R-D-INGAAS France 85414900 8541499500 EAR99

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PDX10R-D-SI PDX10R
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