Data Sheet

ADL7078

THEORY OF OPERATION

analog.com

Rev. 0 | 15 of 19

The ADL7078 is a low-noise, wideband amplifier with integrated

AC-coupling capacitors and a bias inductor. A simplified block

diagram is shown in Figure 51.

The ADL7078 RFIN and RFOUT pins are AC-coupled and matched

to 50 Ω. However, if these pins are connecting to devices with bias

levels that are not equal to 0 V, externally AC-couple the RFIN and

RFOUT pins.

To adjust the drain bias current, connect an external resistor be-

tween the RBIAS and VDD pins.

Figure 51. Simplified Schematic