Applications

• Cellular systems

• 2G/3G/4G/5G systems

• Pre- and post-PA switching

Features

• Broad frequency range, 0.4 ~ 3.8 GHz

• Low insertion loss, <0.6 dB typ. across frequency

• Excellent linearity, –110 dBm typ. B1 and B3

• High isolation: 25 dB at 2.7 GHz, typ.

• Integrated GPIO interface, 1.8 V control

• No DC blocking capacitors required

• Lead (Pb)-free and RoHS-compliant

• AEC-Q100 Grade 2 qualification, –40 °C ~ +105 °C

• Robust ESD protection, 2 kV HBM, 1 kV CDM

• Compact QFN-10 (1.1 x 1.5 mm) MSL1 package

Description

The SKY5A5110 is a single-pole, four-throw (SP4T)

switch. No external DC blocking capacitors are

required on the RF paths as long as there is no DC voltage

on the RF line. The switch can operate over the

temperature range of –40 °C to +105 °C.

Switching is controlled by two CMOS/TTL compatible

control voltage inputs (VC1 and VC2). Depending on

the logic voltage level applied to the control pin, the

RFC pin is connected to one of four switched RF outputs

(RF1, RF2, RF3, or RF4) by using a low insertion

loss path, while the paths between the RFC pin and the

other RF pins are in isolation.

The SKY5A5110 is provided in a small 10-pin

QFN package.

A functional block diagram is shown in Figure 1. The

pin configuration and package are shown in Figure 2.

Signal pin assignments and functional descriptions are

provided in Table 1.