The NI PCIe-6323 is a high-performance X Series multifunction I/O device that integrates analog input and output, digital I/O, and counter/timer functionality on a single PCI Express card. Engineered for automated test, research, and design validation, the PCIe-6323 delivers 16 differential or 32 single-ended analog inputs at 250 kS/s aggregate sample rate with 16-bit resolution, four 16-bit analog outputs at up to 900 kS/s, 48 lines of 5 V TTL digital I/O, and four 32-bit counters running at 100 MHz. The device supports direct memory access (DMA) with scatter-gather capability, hardware-timed digital I/O up to 1 MHz, and flexible counter functions including PWM, quadrature encoder, frequency measurement, and pulse timing.
Technical Specifications
Analog Input
• 16 differential or 32 single-ended channels
• 16-bit ADC resolution
• 250 kS/s maximum sample rate (single and aggregate)
• 10 ns timing resolution; 50 ppm sample rate accuracy
• Input ranges: ±0.2 V, ±1 V, ±5 V, ±10 V
• 100 dB CMRR (DC to 60 Hz)
• Input impedance >10 GΩ ∥ 100 pF (device on); 1,200 Ω (device off)
• ±100 pA input bias current
• 700 kHz small-signal bandwidth (−3 dB)
• 4,095-sample FIFO; 4,095-entry scan list
• Crosstalk: −75 dB adjacent channels, −90 dB non-adjacent at 100 kHz
• Overvoltage protection: ±25 V (device on), ±15 V (device off) for two pins
Analog Output
• 4 channels, 16-bit DAC resolution
• 900 kS/s single-channel; 719 kS/s multichannel sample rate
Digital I/O
• 48 individually programmable lines
• 5 V TTL; hardware-timed operation to 1 MHz
Counters/Timers
• 4 × 32-bit counters at 100 MHz
• PWM, encoder, frequency, event counting, pulse measurement
– Key Features
• PCI Express x1/x4/x8/x16 slot compatible with 8 DMA channels
• Two 68-pin VHDCI connectors
• Power consumption: 1.4 W @ 3.3 V, 8.6 W @ 12 V (without disk drive connector)
• DC coupling; maximum input ±11 V (signal + common mode)
– Typical Applications
Automated test systems, sensor data acquisition, multi-channel signal monitoring, motor and power electronics control, research instrumentation.
– Compatibility & Integration
PCI Express interface supports direct memory access transfers and programmed I/O modes for flexible system integration.
