Loading...

200 MHz TTL-analog photodetector

PRODUCTS > PHOTONICS > PHOTODETECTORS > 200 MHZ TTL-ANALOG PHOTODETECTOR
PD200T 200 MHz TTL-analog photodetector
PD200T 200 MHz TTL-analog photodetector PD200T 200 MHz TTL-analog photodetector functional diagram PD200T 200 MHz TTL-analog photodetector Pulse detection PD200T 200 MHz TTL-analog photodetector PRBS modulation

Koheron PD200T is an InGaAs photodetector with a dual TTL-analog output. The analog output has a gain of 500 V/A and a 200 MHz bandwidth. The TTL output has 2.5 ns propagation delay, 1.3 ns rise time and 0.7 ns fall time. Trigger threshold can be adjusted with a precision trimmer.

Quantity Price

Resources

Specifications

PD200T
Detector
Wavelength range 900 nm to 1700 nm
Optical input power 0 mW to 2 mW
Photodiode connector FC
Photodiode peak responsivity 0.9 A/W
Noise Equivalent Power 30 pW/√Hz (at 100 kHz)
Analog output
3 dB bandwidth 200 MHz
Impulse response 2 ns (FWHM)
Transimpedance gain(high impedance) 500 V/A
Transimpedance gain(50 Ω) 250 V/A
Analog output impedance 50 Ω
Analog output dark offset 10 mV
Analog output current max 80 mA
Analog output voltage(high impedance) 3 Vpp
Analog output voltage(50 Ω) 1.5 Vpp
Analog output slew rate(high impedance) 600 V/µs
Analog output slew rate(50 Ω) 400 V/µs
TTL output
TTL rise / fall time 1.5 ns
Logic low maximum output voltage(high impedance) 0.1 V
Logic low maximum output voltage(50 Ω) 0.05 V
Logic high minimum output voltage(high impedance) 2.6 V
Logic high minimum output voltage(50 Ω) 1.3 V
TTL output current max 20 mA
TTL output impedance 50 Ω
Other
Supply voltage 3.7 V to 12 V
Output connectors SMA
Outside dimensions 53 mm x 48 mm x 14 mm
Weight 20 g
Mechanical details Compatible with M6 metric breadboards (25 mm spacing)
Operating temperature 0 °C to 50 °C

More Photodetectors

Functional diagram

PD200T 200 MHz TTL-analog photodetector functional diagram
PD200T functional diagram

Characterization

Pulse detection

We operated the Koheron LD100 laser in pulsed-mode (width of 10 ns, pulse period of 100 ns, 10 Vpp modulation). The laser average output power was 850 µW. Half of this power was used to feed the PD200T. Trigger threshold was adjusted to 1.0 V. The figure below shows the analog output (in blue) and the TTL output (in purple) observed on an oscilloscope:

PD200T 200 MHz TTL-analog photodetector pulse detection
PD200T pulse detection

Propagation delay between the analog and the TTL output is about 2.5 ns. TTL rise and fall times (10 to 90 %) are 1.3 ns and 0.7 ns, respectively.

PRBS modulation

We modulated the Koheron LD100 laser with a 100 Mbps pseudo random binary sequence (PRBS) shown in yellow in the figure below. The green curve represents the modulation detected by the 100 MHz photodetection of the LD100. The analog and TTL output of the PD200T are shown in blue and red, respectively.

PD200T 200 MHz TTL-analog photodetector PRBS modulation
PD200T PRBS modulation

The 25 ns delay between the laser modulation (in orange) and the PD200T analog output (in blue) corresponds to the 5 m fiber between the laser and the PD200T.

Complementary products

Dual power supply New options

Dual power supply

275 €

SPS200

Ordering codes

PRODUCT NUMBER ATTRIBUTE
PD200T

Export information

PRODUCT NUMBER COUNTRY OF ORIGIN HS CODE HTSUS ECCN
PD200T France 85414900 8541499500 EAR99

Revision history

  • 2: FC Photodiodes

Latest products

High-voltage amplifier

High-voltage amplifier

895 €

HV100

Digital butterfly anode-grounded laser diode controller

Digital butterfly anode-grounded laser diode controller

780 €

CTL20

Butterfly laser diode mount

Butterfly laser diode mount

155 €

BTF100

8-channel digital laser driver

8-channel digital laser driver

2095 €

DRV800

PD200T PD200T
[email protected]