Description
1. Low current noise RMS<1uA.
2. Capable of delivering output voltages up to 23V, suitable for driving virtually all small-power lasers, including DFB (Distributed Feedback) lasers, VCSELs (Vertical-Cavity Surface-Emitting Lasers), ICLs (Interband Cascade Lasers), and QCLs (Quantum Cascade Lasers).
3. Able to provide output currents up to 1A, thus able to drive a wide variety of small-power lasers like DFBs, VCSELs, ICLs, and QCLs.
4. Maximum output current can be limited through a potentiometer, ensuring the safety of the laser device.
5. Supports remote control for enabling/disabling output and monitoring the output current.
6. Offers ultra-stable output current bias and allows for current modulation.
Instructional Video
SPECIFICATIONS (VCS250/500/1000)
PARAMETERS |
MODEL |
||
VCS250 |
VCS500 |
VCS500 |
|
Current-Voltage Ratio |
50mA/V |
100mA/V |
100mA/V |
Maximum Output Current |
250mA |
500mA |
500mA |
Input Voltage Range |
12~24V |
||
Output Voltage |
Supply Voltage-1 |
||
Current Noise Density |
<0.9μA |
||
Temperature Coefficient |
<50ppm/°C |
||
Leakage Current |
2mA |
||
Adjustment Rise/Fall Time |
800/600ns |
||
Modulation Depth |
90%@1MHz |
||
Bandwidth (3dB) |
2MHz |
||
Modulation Input Voltage |
0~5V |
||
Input Pin Impedance |
10MΩ |
||
Remote Enable Voltage Input |
Output Enabled: High Level (>2V, I>5mA); Output Disabled: Low Level (<2V) |
||
Current Monitoring Coefficient |
20V/A |
10V/A |
2V/A |
Ambient Temperature |
-20~60°C |
-20~35°C |
|
Ambient Humidity |
0~98%RH |
||
Thermal Requirements |
No Additional Thermal Dissipation NeededWithin Rated Operating Range |
||
Dimension |
47.5*42.8*32.2mm |
||
Weight |
≈100g |
.
Dimensional Drawing
Dimensional drawing of VCS250/500/1000
。
Interfaces
Pin Name |
Pin Type |
Pin Definition |
|
1 |
Enable |
Input |
The enable port: when at a low level, the laser current driver does not operate; when at a high level or floating, the laser current driver operates. |
2 |
Monitor |
Output |
Actual current monitoring pin (0~5V) |
3 |
Input |
Input |
Modulation Voltage Input Pin (0~5V) |
4 |
GND |
Input |
Signal Ground Pin |
5 |
Vref |
Output |
Reference Voltage Output Interface (0~5V) |
6 |
Offset |
Input |
Current Bias Interface (0~5V) |
7 |
Limit |
Input |
Current Limiting Interface (0~5V) |
8 |
GND |
Input |
Signal Ground Pin |
9 |
Vin |
Input |
Power Supply Positive Input Pin (12~24V) |
10 |
GND |
Output |
Power Supply Negative Input Pin |
11 |
Output+ |
Output |
Positive Current Output |
12 |
Output- |
Output |
Negative Current Output |
。
Evaluation Board
Test Data (Partial)
Current Noise Spectral Density