Ultra low noise high-voltage laser driver
Koheron DRV110 is a current source that can drive up to 1200 mA of current with a compliance voltage of 15 V. Its current noise of 350 pA/√Hz (180 pA/√Hz for the 750 mA version) is below the noise of a 1 A Poissonian current source. The DRV110 can be used to drive high current LEDs below the shot noise limit. Thanks to its high compliance voltage and its low noise performance, the DRV110 is an also an excellent choice to drive quantum cascade lasers (QCL).
| Quantity | Price |
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Resources
Specifications
| DRV110-A-375 | DRV110-A-750 | DRV110-A-1200 | |
|---|---|---|---|
| Current driver | |||
| Laser current | 0 - 375 mA | 0 - 750 mA | 0 - 1200 mA |
| Supply voltage | 3 - 19.5 V | 3 - 19.5 V | 3 - 19.5 V |
| Compliance voltage | 15 V | 15 V | 15 V |
| Temperature coefficient | 25 ppm/°C | 50 ppm/°C | 50 ppm/°C |
| RMS noise (10 Hz - 1 MHz) | 130 nArms | 240 nArms | 480 nArms |
| Current noise density (1 kHz) | 110 pA/√Hz | 200 pA/√Hz | 400 pA/√Hz |
| Current limit (high setting) | 400 mA | 800 mA | 1250 mA |
| Current limit (low setting) | 200 mA | 400 mA | 500 mA |
| Slow start (90 % setpoint) | 280 ms | 470 ms | 600 ms |
| Other | |||
| Outside Dimensions | 63 mm x 53 mm x 12 mm | 63 mm x 53 mm x 12 mm | 63 mm x 53 mm x 12 mm |
| Weight | 23.5 g | 23.5 g | 23.5 g |
| Operating temperature | 0 °C - 50 °C | 0 °C - 50 °C | 0 °C - 50 °C |
| Compatible lasers | Cathode-grounded / floating diodes | Cathode-grounded / floating diodes | Cathode-grounded / floating diodes |
Current noise
The power spectral density of the DRV110 laser driver current noise characterized using a 5 Ω load (A-375) or a 2.5 Ω load (A-750 and A-1200). Voltage drop in regulator is 1 V.
Current stability
Stability over 1 hour for a DRV110-A-1200 driving 1000 mA in a 10 Ω load.
Temperature coefficient
DRV110-A-375 operated at 300 mA in a 10 Ω load. Blue and green are two different samples.
Revision history
- October 2020 - Update slow start and temperature coefficient specifications.
