The National Instruments 780968-01, also referred to as the NI-9208, is a highly efficient 16-channel current input module designed for demanding industrial environments. Equipped with a 24-bit Delta-Sigma analog-to-digital converter (ADC), this module supports input ranges of ±20 mA with exceptional precision and accuracy. It features integrated 50/60 Hz noise rejection capabilities that significantly mitigate low-frequency interference, ensuring reliable measurements even in electrically noisy conditions. The high-channel density of the 780968-01 optimizes system space and reduces overall costs by minimizing the number of required modules.

Connectivity is streamlined through a standard 37-pin D-SUB interface, allowing compatibility with various cables and connector kits, such as the NI 9937 D-SUB connector kit, enhancing integration with existing systems. The module is built for durability, providing ±30 V overvoltage protection to safeguard against harsh operating conditions. Compatible with both CompactRIO and CompactDAQ platforms, the 780968-01 offers a versatile solution for embedded applications, taking advantage of CompactRIO's robust architecture and FPGA capabilities alongside CompactDAQ's modular data acquisition features.

Performance metrics for the 780968-01 are impressive, with high-resolution mode yielding a noise rejection ratio (NMRR) of 66 dB at 50 Hz and 68 dB at 60 Hz, alongside a low input noise of 50 nA RMS and a channel conversion time of 52 ms. In high-speed mode, the input noise rises slightly to 200 nA RMS, with a reduced conversion time of just 2 ms. The input impedance is set at 85 Ω, and the module exhibits exceptional stability characterized by an offset drift of 62 nA/°C and gain drift of 20 ppm/°C. The NI-9208 is an ideal choice for complex industrial applications that demand both precision and reliability.