ADRF5160

Data Sheet

Rev. 0 | Page 8 of 12

THEORY OF OPERATION

The ADRF5160 requires a single-supply voltage applied to the

line to minimize RF coupling.

The ADRF5160 is controlled via a digital control voltage

on this digital signal line to improve the RF signal isolation.

The ADRF5160 is internally matched to 50 Ω at the RF input

port (RFC) and the RF output ports (RF1 and RF2). Therefore,

no external matching components are required. The RFx pins

are dc-coupled, and dc blocking capacitors are required on the

RFx lines. The design is bidirectional, meaning that the input

and outputs are interchangeable.

The ideal power-up sequence is as follows:

1. Connect GND.

3. Power up the digital control input. Power the digital

forward biasing and damaging the ESD protection

structures.

4. Power up the RF input.

output port (for example, RF1) is set to on mode, by which an

insertion loss path is provided from the input to the output.

While the other RF output port (for example, RF2) is set to off

mode, by which the output is isolated from the input.

Table 5. Switch Operation Mode

Signal Path

RF1 to RFC

RF2 to RFC

Low

Isolation (off)

Insertion loss (on)

High

Insertion loss (on)

Isolation (off)