I have a AD8000 SOIC package in noninverting configuration (Fig. 50 datasheet). Rf=439 ohms, Rs=0ohms, RL is open circuit, Rg = open circuit, 0.1 uF decoupling caps at supply pins. I am using +/-5V supply. I am interested in the performance at 1.25 GHz. I use -20 dBm input and get -26 dBm output at 1.25 GHz. I don't think this matches the performance shown in Fig.5 of datasheet. Can you suggest what I could change to make it work as expected?
Figure 5 does match the data in Table 5. Please note that the graph is in log scale.
These discussions would help in your layout considerations. AD8000&AD8001 PCB design issues and Same function by using same pcb design for AD8001&AD8000.