ADRF5040

Data Sheet

Rev. A | Page 12 of 14

THEORY OF OPERATION

The ADRF5040 requires a positive supply voltage applied to the

Bypassing capacitors are recommended on the supply lines to

minimize RF coupling.

The ADRF5040 is controlled via two digital control voltages

capacitor is recommended on these digital signal lines to

improve the RF signal isolation.

The ADRF5040 is internally matched to 50 Ω at the RF input

port (RFC) and the RF output ports (RF1, RF2, RF3, and RF4);

therefore, no external matching components are required. The

RF1 through RF4 pins are dc-coupled, and dc blocking capacitors

are required on the RF paths. The design is bidirectional; the

input and outputs are interchangeable.

The ADRF5040 does not need any special power-up sequencing,

and causing damage to the internal ESD protection circuits.

Turn on the RF signal after the device supply settles to a steady

state.