NI PXIE-5641R is identified by NI as an IF transceiver in the PXIe-5641 family and is described on the official NI product page as “NI PXIe-5641R, IF Transceiver.” NI classifies the family as a 2-input/2-output PXI IF transceiver, with PXI Express as the bus platform and a family frequency range of 0 MHz to 80 MHz. The public NI commerce listing shows catalog part number 780710-01 for this family-level orderable configuration. https://www.ni.com/en/shop/hardware/software-defined-radios/model-pxie-5641
The module integrates reconfigurable FPGA hardware based on a Xilinx Virtex-5 SX95T with 94,208 logic cells, 640 DSP blocks, and 8,784 kbits of block RAM. NI also specifies 128 MB of onboard DRAM with a theoretical maximum data rate of 1,600 MB/s. According to the specifications, the front panel provides two analog input channels and two analog output channels, matching the default transceiver personality described in the NI IF Transceivers manual as two synchronized input channels and two synchronized output channels. https://www.ni.com/docs/en-US/bundle/pxie-5641-specs/page/specs.html https://www.ni.com/docs/en-US/bundle/if-transceivers/page/user-manual-welcome.html
For analog performance, NI specifies two 14-bit ADC input channels operating from 30 MS/s to 100 MS/s with 50 Ω nominal input impedance and maximum instantaneous bandwidth of 20 MHz limited by the DDC. The two 14-bit DAC output channels operate from 30 MS/s to 200 MS/s with 50 Ω nominal output impedance. Digital downconversion supports up to 6 DDC channels per ADC channel with 16-bit I/Q data and decimation from ÷4 to ÷4,096, while digital upconversion provides 1 DUC per DAC channel with 14-bit I/Q data, interpolation from 4x to 252x, and modulation bandwidth up to 40 MHz. https://www.ni.com/docs/en-US/bundle/pxie-5641-specs/page/specs.html
