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Si free-space balanced photodetector

PRODUCTS > PHOTONICS > PHOTODETECTORS > SI FREE-SPACE BALANCED PHOTODETECTOR
PDX10B-SI Si free-space balanced photodetector
PDX10B-SI Si free-space balanced photodetector PDX10B-SI Si free-space balanced photodetector frequency response PDX10B-SI Si free-space balanced photodetector output power spectral density PDX10B-SI Si free-space balanced photodetector noise equivalent power

Koheron PDX10B-SI is a Si free-space balanced photodetector with 80 kV/A transimpedance gain and 8 MHz bandwidth. With a noise-equivalent power spectral density of only 1 pW/√Hz and the capability to reject laser common mode noise, the photodetector can be shot-noise limited even at a low input signal level. A monitoring input signal is provided for each photodiode to assist with beam alignment and power balancing.

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Specifications

PDX10B-3-DC-SI PDX10B-80-DC-SI
Detector
Detector type Si PIN photodiode Si PIN photodiode
Active diameter 800 µm 800 µm
Wavelength range 320 nm to 1000 nm 320 nm to 1000 nm
Optical input power 0 mW to 3 mW 0 mW to 3 mW
Photodiode peak responsivity(800 nm) 0.55 A/W 0.55 A/W
Transimpedance amplifier
Small signal bandwidth 0 Hz to 50 MHz at 3 dB 0 Hz to 8 MHz at 3 dB
Coupling DC DC
Transimpedance gain 3 kV/A 80 kV/A
Noise Equivalent Power(at 1 MHz) 6 pW/√Hz 1.4 pW/√Hz
Output voltage range(high impedance) 8 Vpp 8 Vpp
Output voltage range(50 Ω) 3.8 Vpp 3.8 Vpp
Output impedance 50 Ω 50 Ω
Output SMA female connector SMA female connector
Monitoring (MON+ / MON-)
Gain 1 V/mA 1 V/mA
Bandwidth 4 kHz 4 kHz
Output impedance 1 kΩ 1 kΩ
Power supplies
Positive supply voltage 5.5 V to 9 V, nom. 6 V 5.5 V to 9 V, nom. 6 V
Negative supply voltage -9 V to -5.5 V, nom. -6 V -9 V to -5.5 V, nom. -6 V
Quiescent current per rail 35 mA 35 mA
Maximum current per rail 100 mA 100 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 29 g 29 g

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Functional diagram

PDX10B-80-DC-SI Si free-space balanced photodetector functional diagram
PDX10B-80-DC-SI functional diagram

Characterization

Output power spectral density

The power spectral density of the PDX10B-80-DC-SI free-space balanced photodetector output was measured for different incident optical powers. Optical source is a pair of 810 nm LEDs driven by a Koheron DRV110-A-375 laser driver. Power spectrum is measured using the Koheron ALPHA250 FFT analyzer.

PDX10B-3-DC-SI Si free-space balanced photodetector output power spectral density
PDX10B-3-DC-SI (3 kV/A) output power spectral density
PDX10B-80-DC-SI Si free-space balanced photodetector output power spectral density
PDX10B-80-DC-SI (80 kV/A) output power spectral density

Small signal frequency response

PDX10B-3-DC-SI Si free-space balanced photodetector frequency response
PDX10B-3-DC-SI (3 kV/A) frequency response
PDX10B-80-DC-SI Si free-space balanced photodetector frequency response
PDX10B-80-DC-SI (80 kV/A) frequency response

Noise equivalent power

The figure below shows the noise-equivalent power spectral density at a wavelength of 810 nm.

PDX10B-3-DC-SI Si free-space balanced photodetector noise equivalent power
PDX10B-3-DC-SI (3 kV/A) noise equivalent power
PDX10B-80-DC-SI Si free-space balanced photodetector noise equivalent power
PDX10B-80-DC-SI (80 kV/A) noise equivalent power

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Ordering codes

PRODUCT NUMBER ATTRIBUTE
PDX10B-3-DC-SI Transimpedance gain 3 kV/A
PDX10B-80-DC-SI Transimpedance gain 80 kV/A

Export information

PRODUCT NUMBER COUNTRY OF ORIGIN HS CODE HTSUS ECCN
PDX10B-3-DC-SI France 85414900 8541499500 EAR99
PDX10B-80-DC-SI France 85414900 8541499500 EAR99

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PDX10B-80-DC-SI PDX10B-SI
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