DATA SHEET • SKY13345-368LF: 0.1 TO 3.5 GHz SP3T SWITCH
Table 1. SKY13345-368LF Signal Descriptions (Note 1)
RF port 1
RF port 3
DC control voltage 1 (see Table 4)
DC control voltage 2 (see Table 4)
DC control voltage 3 (see Table 4)
Note 1: Exposed pad must be grounded.
DC power supply
RF port 2
RF common (antenna) port
No connection (pin may be grounded)
The SKY13345-368LF includes an internal negative voltage
generator and decoder that eliminate the need for external DC
blocking capacitors on the RF ports. No external components are
required for proper operation. DC decoupling capacitors may be
added on the VDD and control lines if necessary.
Switching is controlled by three control voltage inputs: V1, V2, and
V3. Depending on the logic voltage level applied to the control
pins, the RFC (RF common) pin is connected to one of three
switched RF outputs (J1, J2, or J3) through a low insertion path,
while the path between the RFC pin and the other RF pins is in a
high isolation state. There is a fourth switching state that enables
J2 and J3 at the same time. The output power measured at J2
and J3 in this state is 3 dB less than the insertion loss.
For proper switching operation, the SKY13345-368LF must be set
to a state for a minimum of 10 μs before changing to a different
state. A typical switching diagram is shown in Figure 3.
Shutdown mode is enabled by connecting all control pins to logic
low. This mode reduces the overall current consumption of the
device to 5 μA, typical. To prevent the switch from accidentally
entering shutdown mode during switching, caution must be taken
to avoid having all three control signals (V1, V2, and V3) set to
logic low for more than 500 ns. When exiting shutdown mode, the
switch has a 25 μs startup time before switching occurs.
Electrical and Mechanical Specifications
The absolute maximum ratings of the SKY13345-368LF are
provided in Table 2. Electrical specifications are provided in
The state of the SKY13345-368LF is determined by the logic
provided in Table 4.
Typical performance characteristics of the SKY13345-368LF are
illustrated in Figures 4 through 7.
Table 2. SKY13345-368LF Absolute Maximum Ratings (Note 1)
Supply voltage (VDD)
Control voltage (V1, V2, V3) (Note 2)
Note 1: Exposure to maximum rating conditions for extended periods may reduce device reliability. There is no damage to device with only one parameter set at the limit and all other
parameters set at or below their nominal value. Exceeding any of the limits listed here may result in permanent damage to the device.
Note 2: Any bias voltage applied to the V1, V2, or V3 pins may damage the device if there is no bias voltage also present on the VDD pin.
CAUTION: Although this device is designed to be as robust as possible, electrostatic discharge (ESD) can damage this device. This device
must be protected at all times from ESD. Static charges may easily produce potentials of several kilovolts on the human body
or equipment, which can discharge without detection. Industry-standard ESD precautions should be used at all times.
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2 September 15, 2015 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 201194E