F2932

High Reliability SP2T RF Switch

14

F2932, Rev 1 05/12/2016

Default Start-up

There are no internal pull-up or pull-down resistors on the VCTL or EN pins.

Logic Control

Control pins VCTL and EN are 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 at the input of each control pin is recommended. This applies to control

pin 2 (VCTL) and pin 5 (EN) as shown below.

1

4

3

2

12

9

10

11

50Ω

50Ω

EN

5k ohm

2pF

VCTL

5k ohm

2pF