The NI myDAQ is a compact, portable USB-based data acquisition device engineered for hands-on learning and practical measurement tasks in electrical engineering coursework and laboratory environments. It integrates with NI LabVIEW to enable real-time sensor data acquisition, external circuit control, and signal processing across analog, digital, and audio domains.
Technical Specifications
Analog Input
• 2 differential channels or 1 stereo audio input
• 16-bit ADC resolution
• 200 kS/s maximum sampling rate per channel
• ±10 V or ±2 V ranges (DC-coupled analog; AC-coupled audio)
• 100 ppm timing accuracy; 10 ns timing resolution
• 4,095-sample shared input FIFO
• Passband: DC to 400 kHz (analog); 1.5 Hz to 400 kHz (audio)
• Absolute accuracy: ±22.8 mV (±10 V range), ±4.9 mV (±2 V range) at 23 °C
• Screw terminal connectors; microphone excitation at 5.25 V through 10 kΩ
Analog Output
• 2 channels, 16-bit DAC resolution
• 200 kS/s maximum update rate per channel
• ±10 V output range (general-purpose and audio modes)
• 2 mA maximum output current per channel
• Screw terminal connectors
Digital I/O
• 8 programmable function interface (PFI) lines
• 5 V LVTTL input compatibility; 3.3 V LVTTL outputs
• 4 mA maximum output current per line
• Lines cannot serve simultaneous input and output functions
Power Supplies
• +15 V @ 32 mA, −15 V @ 32 mA, +5 V @ 100 mA
• 500 mW typical / 100 mW minimum total power budget across all supplies, analog outputs, and digital outputs
– Key Features
• USB-powered device—no external power supply required
• Screw terminal connectors for reliable signal connections
• Dual voltage rails (±15 V) support analog circuit design and prototyping
• 5 V digital supply enables logic-level interfacing
• 16-bit resolution across all I/O channels
• Audio input via microphone or line-in with automatic excitation
– Typical Applications
• Circuit characterization and real-time measurement
• Sensor signal conditioning and data logging
• Audio signal acquisition and playback
• Digital logic and control prototyping
• Filter design and frequency response analysis
– Compatibility & Integration
The myDAQ operates as a USB peripheral and integrates directly with NI LabVIEW for graphical programming, data visualization, and automated testing workflows.
