DAR200: Nano-Scale High-Precision Multi-Channel Data Acquisition and Control Card
Multi-Channel High-Resolution Data Acquisition and Control Platform for Nanometer-Scale Displacement Closed-Loop Control Systems
Product Description
1. Product Overview
The DAR200 is a high-performance data acquisition and conversion expansion card specifically designed for nano-scale laser processing, micro-displacement precision control, and high-sensitivity photoelectric detection. Serving as the core signal hub of a micro/nano positioning system, the DAR200 integrates multi-channel, high-resolution analog-to-digital conversion (ADC) and high-dynamic-range digital-to-analog conversion (DAC) modules on a single platform.
Through an industrial-grade HSMC interface, the DAR200 seamlessly interfaces with ZYNQ FPGA–based controllers and other FPGA host platforms, enabling full closed-loop control from optical signal acquisition to precision piezoelectric actuator (PZT) drive.
2. Key Advantages
3. Technical Specifications
4. Application Areas
5. System Integration Example
In a typical nano-fabrication system, the DAQ-100 operates in conjunction with a ZYNQ-series control platform:
6. Customization Options
In addition to standard configurations, custom DAQ solutions are available. Input/output types, resolution, sampling rates, and interface options can be tailored to meet specific system integration requirements.
The DAR200 is a high-performance data acquisition and conversion expansion card specifically designed for nano-scale laser processing, micro-displacement precision control, and high-sensitivity photoelectric detection. Serving as the core signal hub of a micro/nano positioning system, the DAR200 integrates multi-channel, high-resolution analog-to-digital conversion (ADC) and high-dynamic-range digital-to-analog conversion (DAC) modules on a single platform.
Through an industrial-grade HSMC interface, the DAR200 seamlessly interfaces with ZYNQ FPGA–based controllers and other FPGA host platforms, enabling full closed-loop control from optical signal acquisition to precision piezoelectric actuator (PZT) drive.
2. Key Advantages
- Ultra-Low-Noise Power Architecture
The system supports ±24 V industrial supply input with wide dynamic range. An internal ultra-low-noise, high-precision linear regulation architecture generates seven independent precision power rails (+12 V, −12 V, +5 V, −5 V, +3.3 V, −3.3 V, +2.5 V, etc.). This architecture fundamentally suppresses ripple and switching noise, ensuring signal integrity at full 16-bit resolution.
- High-Dynamic, Fast-Response Drive Capability
Equipped with four 16-bit high-precision DAC channels operating at up to 1 MSPS, the DAR200 is optimized for piezoelectric actuator (PZT) control. It delivers excellent voltage linearity and fast transient response, enabling real-time nano-scale displacement compensation.
- Flexible Multi-Range Signal Acquisition
Multiple programmable analog input ranges (0–5 V, 0–10 V, −10–0 V) support a wide variety of sensors, including quadrant photodiodes (QPDs) and photodiodes. With parallel multi-channel sampling, the system enables real-time monitoring of reflected intensity, transmitted intensity, and laser power normalization signals.
- Industrial-Grade Physical Connectivity
Professional LEMO connectors, along with SMB / SMA / SMC RF connectors, are employed for all critical analog interfaces. This industrial-grade interconnection scheme minimizes signal loss and significantly enhances electromagnetic compatibility (EMC) in electrically noisy environments.
3. Technical Specifications
- Analog Input (ADC)
| Parameter | Specification |
| Resolution | 16-bit (high-precision, parallel multi-channel sampling) |
| Channel Count | 7 high-precision channels + multiple low-speed monitoring channels |
| Maximum Sampling Rate | 100 kSPS |
| Input Ranges | 0–5 V / 0–10 V / −10–0 V (configurable) |
- Analog Output (DAC)
| Parameter | Specification |
| Resolution | 16-bit (primary drive) / 8-bit (high-speed modulation) / 10–12 bit (auxiliary) |
| Channel Count | 4 primary output channels + multiple auxiliary outputs |
| Update Rate | 1 MSPS (16-bit) / up to 200 MSPS (high-speed modulation) |
| Target Applications | PZT actuation, laser power modulation |
- System Interfaces
| Item | Specification |
| Host Interface | HSMC standard connector (compatible with ZYNQ / FPGA platforms) |
| External Connectors | LEMO, SMA, SMB, SMC, 10-pin headers |
- Power and Signal Integrity
| Item | Specification |
| Input Supply | ±24 V DC |
| Internal Rails | 8 precision linear-regulated voltage outputs |
| Signal Integrity | High SNR, ultra-low temperature drift |
4. Application Areas
- Nano-Scale Laser Processing
Ultra-short pulse modulation (down to 10 ns) and precise laser power compensation.
- Micro-Displacement Precision Control
Driving PZT X/Y/Z multi-axis stages, achieving nano-scale step resolution within a 200 μm travel range (voltage resolution down to 0.5 mV).
- High-Energy Physics and Optical Detection
High-precision acquisition of quadrant photodiode signals for accurate beam spot centroid locking.
- Semiconductor Inspection
Synchronous high-speed digitization and analysis of transmitted and reflected optical intensity signals.
5. System Integration Example
In a typical nano-fabrication system, the DAQ-100 operates in conjunction with a ZYNQ-series control platform:
- Downlink Control:
A 1 MSPS / 16-bit DAC drives the PZT controller, enabling ultra-precise stage displacement control.
- Uplink Acquisition:
A 100 kSPS ADC continuously feeds back signals from quadrant photodiodes and photomultiplier tubes (PMTs), forming a high-bandwidth feedback loop.
- High-Speed Calibration:
Onboard high-speed signal channels provide 256-level grayscale laser power modulation, ensuring consistent and repeatable processing accuracy.
6. Customization Options
In addition to standard configurations, custom DAQ solutions are available. Input/output types, resolution, sampling rates, and interface options can be tailored to meet specific system integration requirements.