LDD-1321
Low current CW Laser Diode Driver with Laser Power Control [optional feature]
0-1.5 A / 0-14 V
Prices for multiple units
For more than 10 units,
please request a quotation
It is based on a digitally controlled current source and provides digital, internal signal generators (on the microcontroller). External signal generators can also be used via the analog input. It also includes a lookup table (LUT) for generating setpoint curves.
The power stage is designed for low currents and enables stable and reproducible current control. The proven MeCom interface and the PC software for configuration and monitoring support efficient integration and commissioning.
Optional expansions:
- The LDD-1321 can be supplemented with the plug-in TEC Driver Board (PWR-1191). This board features a bidirectional current source that adds TEC controller functionality to the device.
- The Light Power Control (LPC) function is available as an additional feature via a software license.
Detailed Description | LDD-1321 | Laser Diode Driver
The LDD-1321 laser diode driver is a digitally controlled current source for operating laser diodes in continuous-wave (CW) mode. The linear output stage enables stable and reproducible current control, designed for low-current applications.
The device is fully digitally configurable and offers integrated protection functions such as overcurrent, overvoltage, and overtemperature protection, as well as an interlock input. External temperature monitoring is possible via NTC sensors.
Several interfaces are available for system integration, including USB (galvanically isolated), RS485, RS232 TTL, and CAN. Communication takes place via the MeCom or CANopen protocol. The PC software supports configuration, monitoring, and data acquisition.
Optionally, the LDD-1321 can be supplemented with the PWR-1191 expansion module. This provides a bipolar output for driving Peltier elements or resistive heating elements and enables the integration of a temperature control system.
Typical applications:
Low-current laser diode drivers such as the LDD-1321 are widely applicable. Typical applications include:
- Medical and cosmetic devices
- Fiber-optic communications
- Laser printing and scanning systems
- Material processing
- Biotechnology and spectroscopy
- Scientific research (e.g., quantum)
If you have further questions about applications or compatibility, please contact our support. Pre- or post sale, doesn't matter: We are happy to help you!
Free functions for Laser Diode Drivers (included)
Control and regulation
- PID-controlled current source
- Constant current (CW) control mode
- Integrated signal generator: waveforms, pulse modulation, lookup table (LUT)
- Integrated TEC control (depending on model)
- Customizable control and monitoring functions
- Remote control and monitoring via standard interfaces
- Free desktop software included (for easy commissioning, control, monitoring and firmware updates)
Monitoring and safety functions
- Temperature measurement and monitoring
- Data logging (temperature, current, light output)
- Monitor Data Logger
- Protection mechanisms: Overcurrent protection, overtemperature protection, overvoltage protection, interlock
- Status and error flags
Communication and integration
- Stand-alone operation possible
- Communication via USB, RS485, RS232, CANopen (depending on model)
- Analog inputs and outputs (depending on model)
- 5V voltage output for powering small circuits (depending on model)
- PWM fan control (depending on model)
- MeCom Device Server as a .NET-based interface between Meerstetter devices and various master applications
- Fast system integration thanks to comprehensive documentation
- Significant system simplification thanks to integrated functions
Digital inputs/outputs (GPIOs) and system control
- Versatile GPIO functions such as status displays, external pulse control, fan and pump control, device activation, address configuration, temperature stability display and more - depending on the device model.
Paid features for Laser Diode Drivers (optional)
- Light Power Control (LPC): Control of optical output power rather than current: The optical output power of the laser diode is measured and controlled using a photodiode.
Further benefits and added value
- 30 years of experience: proven technology you can rely on
- Swiss quality and precision
- Delivery from stock
- Long-term product availability of hardware and software
- Personal, direct technical support from Meerstetter engineers
- Flexible adaptations and customer-specific solutions
- Support with application development and system integration
- Regular further development and maintenance of products
Technical Data | LDD-1321 | Laser Diode Driver
| Supply Voltage | 12 - 24 V DC |
| Supply Current | max. 7 A DC (fused) |
| Output Voltage | 0 - 14 V |
| Output Current | 0 - 1.5 A |
| CW / Modulated Current: | |
| - CW Current Control | Configurable PID |
| - CW Current Resolution | 0.1 mA |
| Communication Interfaces | USB, RS485, RS232 TTL, CANopen |
| Configuration / Diagnosis | via Communication Interfaces and PC software (free of charge) |
| Efficiency | t.b.a. |
| Dimensions (L x W x H) | 90 mm x 90 mm x 20 mm |
| With Plug-in TEC Controller Board: | PWR-1191 |
| - TEC Output Current | ±4 A |
| - TEC Output Voltage | ±20 V |
Trial Device | LDD-1321 | Laser diode driver
Discover the advanced capabilities of the LDD-1321 Laser diode driver with an 8-week trial opportunity.
This program offered by Meerstetter Engineering gives technical developers and other interested people the chance to explore the cutting-edge laser driver LDD-1321 in real-world applications. Ensuring seamless integration and optimized performance for demanding fields such as medical technology, spectroscopy, quantum research, and telecommunications.
By testing the devices firsthand, integrators can
- reduce uncertainties,
- validate the compatibility with the planned system, and
- move the project forward.
The conditions are as follows:
- 8 weeks trial period
- Device provided free of charge by Meerstetter Engineering
- Shipping costs to be covered by the customer
To start your trial period, simply reach out to our sales team. Let us help you turn your project into reality.
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Shop Information
- Payments by credit card or by invoice
- Cheques are not accepted
- For more than the maximum number of units please request a quotation
- Usually all products ship within 3-5 days
- All prices excl. VAT (unless otherwise stated)
- Additional to the shipping costs (only if sent with our account), there are duties and taxes to be paid by the recipient
- The products are shipped worldwide