The TSW40RF80 evaluation module (EVM) is a two-transmit two-receive (2T2R) RF-sampling transceiver reference design. The module contains the DAC38RF80 dual-channel RF-sampling digital-to-analog converter (DAC) and the ADC32RF45 dual-channel RF-sampling analog-to-digital converter (ADC).
The DAC38RF80 sampling rate operates up to 9 GSPS and includes an onboard PLL/VCO for high-frequency clock generation. The output is single ended for easy interface to 50-Ω circuitry. The ADC32RF45 sampling rate operates up to 3 GSPS. It has an option to use a dual digital down converter in each channel or to bypass it to access the full Nyquist bandwidth.
The TSW40RF80EVM includes the LMK04828 clock generator for providing a reference signal to the DAC PLL and for generating the required SYSREF signals needed for the JESD204B protocol. Also included is the LMX2582 RF synthesizer for providing an ultralow-phase noise clock solution for the ADC.
The TSW40RF80EVM implements an efficient LDO-less power-management solution using only DC-DC converters for the required power rails. The design fits within a standard FMC-compliant width and interfaces with the TI pattern/capture card solution (TSW14J56), as well as many FPGA development kits.