National Instruments 781050-01

The National Instruments part number 781050-01 designates the PCIe-6361 PCI Express Multifunction I/O Module. This advanced module is equipped with 16 analog inputs, which can be configured as 16 single-ended or 8 differential channels, alongside 2 analog outputs and 24 digital input/output signals. The analog inputs feature a 16-bit ADC resolution, ensuring precise voltage conversion. With a maximum sample rate of 2.00 MS/s per channel, or approximately 1.00 MS/s when utilizing multiple channels, the module supports an input voltage range from ±0.1 volts to ±10 volts, while handling maximum working voltages of up to 11 volts.

The 781050-01 employs Scatter-gather Direct Memory Access (DMA) for efficient data transfer between the module and system memory, minimizing CPU involvement and enhancing performance for non-contiguous data. Additionally, it includes USB bus functionality to facilitate high-speed data transmission between external USB devices and the module, ensuring compatibility with varied communication interfaces like PCIe/PXIe.

This module also provides two 16-bit analog outputs with a maximum update speed of 2.86 MS/s for single-channel operation or 2.00 MS/s in dual-channel mode. To enhance signal integrity, the output impedance is optimized to 0.2 Ω, and it can drive external loads with a maximum output current of ±5 mA, while also tolerating overvoltage conditions of up to ±25 V for increased reliability. Power consumption is efficient, requiring 4.6 watts at 3.3 volts DC or 5.4 watts at 12 volts DC when no disk drive power connector is installed. If the connector is present, the power requirements adjust to 1.6 watts at 3.3 volts DC or remain at 5.4 watts at 12 volts DC.

The PCIe-6361 module operates within a form factor compliant with the x1 PCI Express specification v1.1 and weighs 161 grams (5.6 ounces), making it an ideal solution for diverse industrial automation and control applications.