SBOS778D April 2016 – April 2021 THS4551
The pulse response plots were taken using the output circuit of Figure 8-4. The two sides of this circuit present a 500-Ω load to ground (for a differential 1-kΩ load) with a 50-Ω source to the two scope inputs. Trace math is used to combine the two sides into the pulse response plots of Figure 7-7 to Figure 7-10 and Figure 7-25 to Figure 7-28. Using balanced bipolar supplies for this test ensures that the THS4551 outputs deliver a ground-centered differential swing. This setup produces no dc load currents using the circuit of Figure 8-4.