F2933

High Reliability SP2T RF Switch

16

F2933, Rev O 05/04/2016

Default Start-up

There is no internal pull-up or pull-down resistor on the VCTL pin.

Logic Control

The VCTL pin is used to set the state of the SP2T switch (see Table 1).

Power Supplies

A common VCC power supply should be used for all pins requiring DC power. All supply pins should be

bypassed with external capacitors to minimize noise and fast transients. Supply noise can degrade noise figure

and fast transients can trigger ESD clamps and cause them to fail. Supply voltage change or transients should

have a slew rate smaller than 1 V / 20 µs. In addition, all control pins should remain at 0 V (+/-0.3 V) while

the supply voltage ramps or while it returns to zero.

Control Pin Interface

If control signal integrity is a concern and clean signals cannot be guaranteed due to overshoot, undershoot,

ringing, etc., the following circuit is recommended at the input of control pin 2 (VCTL). See figure below.

1

4

3

2

12

9

10

11

50Ω

50Ω

VCTL

5k ohm

2pF