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100 MHz balanced photodetector

PD100B - Balanced amplified photodetector
PD100B - Balanced amplified photodetector PD100B - Diagram PD100B - Frequency response PD100B - Shot noise PD100B - Noise Equivalent Power PD100B - Common mode rejection ratio

Koheron PD100B is an amplified balanced detector with 39 kV/A gain, 100 MHz bandwidth and a common mode rejection ratio of 35 dB. Available in AC and DC coupled versions, with mounted InGaAs photodiodes or without photodiodes, the PD100B is ideal for applications such as Optical Coherence Tomography and Lidar sensing.

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Detector type InGaAs photodiodes InGaAs photodiodes
Wavelength range 900 nm to 1700 nm 900 nm to 1700 nm
Optical input power 0 mW to 1.5 mW 0 mW to 1.5 mW
Photodiode connector FC FC
Photodiode active diameter 300 µm 300 µm
Photodiode peak responsivity 0.90 A/W 0.90 A/W
Transimpedance amplifier
Coupling AC DC
DC cutoff frequency 160 Hz N.A.
Small signal bandwidth 160 Hz to 100 MHz at 3 dB (Cin = 8 pF) 0 Hz to 100 MHz at 3 dB (Cin = 8 pF)
Transimpedance gain 39 kV/A 39 kV/A
Output voltage range -3 V to 3 V -3 V to 3 V
CMRR at 1 MHz 35 dB 35 dB
Input current noise density (10 MHz, Cin = 8 pF) 8 pA/√Hz 8 pA/√Hz
Output impedance 50 Ω 50 Ω
Output SMA female connector SMA female connector
Power supplies
Positive supply voltage 5.5 V to 12 V (nominal 6 V) 5.5 V to 12 V (nominal 6 V)
Negative supply voltage -12 V to -5.5 V (nominal -6 V) -12 V to -5.5 V (nominal -6 V)
Quiescent current 25 mA per rail 25 mA per rail
Maximum current 120 mA per rail 120 mA per rail
Outside dimensions 63 mm x 38 mm x 14 mm 63 mm x 38 mm x 14 mm
Operating temperature 0 °C to 50 °C 0 °C to 50 °C
Weight 21 g 21 g
Mechanical details Compatible with M6 metric breadboards (25 mm spacing) Compatible with M6 metric breadboards (25 mm spacing)

More Photodetectors

Functional diagram

PD100B balanced photodetector functional diagram


Output power spectral density

The power spectral density of the PD100B output was measured for different incident optical powers. The indicated power is the incident power per photodiode. The PD100B output is directly connected to the spectrum analyzer (Tektronix RSA306). Optical source is a Koheron LD100 laser at 1550 nm.

PD100B-DC photodetector power spectral density
DC-coupled PD100B output power density
PD100B-AC photodetector power spectral density
AC-coupled PD100B output power density

Common mode rejection ratio

When properly balanced, the common mode rejection ratio (CMRR) at 1 MHz of the PD100B is 35 dB. To maximize the CMRR care should be taken not only to balance the optical powers, but also the path length between the two channels.

Common mode rejection ratio

Frequency response

PD100B Frequency response

Noise equivalent power

Noise Equivalent Power

Complementary products

Dual power supply New options

Dual power supply

245 €

Ordering codes

PD100B-AC InGaAs photodiodes mounted / Coupling AC
PD100B-DC InGaAs photodiodes mounted / Coupling DC
PD100B-AC-NOP No photodiodes / Coupling AC
PD100B-DC-NOP No photodiodes / Coupling DC

Export information

PD100B-AC France 85414900 8541499500 EAR99
PD100B-DC France 85414900 8541499500 EAR99
PD100B-AC-NOP France 85423990 8542390001
PD100B-DC-NOP France 85423990 8542390001

Revision history

  • 2: PCB form factor update.

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