Data Sheet

ADL7078

USING THE RBIAS PIN TO ENABLE AND DISABLE THE ADL7078

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Rev. 0 | 18 of 19

By attaching a SPDT switch to the RBIAS resistor, an enable and

disable circuit can be implemented as shown in Figure 54. The

ADG719 CMOS switch is used to connect the RBIAS resistor either

to a supply or ground. When the RBIAS resistor is connected to

ground, the overall current consumption reduces to 3.61 mA with no

RF signal present and 3.75 mA when the RF input level is 0 dBm.

Figure 55 shows a plot of the turn on and the turn off response

time of the RF output envelope when the IN pin of the ADG719 is

pulsed.

Figure 54. Fast Enable or Disable Using a 0 V or 3 V Pulse on the RBIAS Pin

Figure 55. Turn-On and Turn-Off Response Time of the RF Output Envelope

when the IN Pin of the ADG719 Is Pulsed