I want to buy a ADL5380-EVALZ, and what should I do if I want to use single-ended LO and single-ended RF?
As per datasheet, for single ended operation:
"A single-ended 50Ω signal can be applied differentially to the RF inputs through a 1:1 balun."
"The RF and LO inputs have a differential input impedance of approximately 50 Ω as shown in Figure 78. Figure 79 shows the return loss. For optimum performance, both the LO and RF ports should be ac-coupled and driven differentially through a balun as shown in Figure 80 and Figure 81."
"Alternatively, if the single-ended drive of both the LO and RF ports is the desired mode of operation, degradations in IIP2 will be observed because of the lack of common mode rejection. The degradation in IIP2 is more prevalent at high frequencies, specifically frequencies greater than 1600 MHz. At low frequencies, the ADL5380 has inherent common mode rejection offering superior IIP2 performance in the 70 dBm range. As shown in Figure 82 and Figure 83, in single-ended mode, the largest performance impact is seen in IIP2 while minimal performance degradation is observed in IIP3"
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