SKY13381-374LF

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RF Switches are electronic components that are used to switch an RF signal from one path to another. They are an essential element of any communication system that requires a great deal of antenna switching. The SKY13381-374LF is an example of an RF Switch which offers fast switching speed and low insertion loss.

Application Field

The SKY13381-374LF is a single-pole 4-throw (SP4T) RF switch that operates in the range of 0.5 to 4.0 GHz. Its applications are mainly in Wi-Fi systems, Bluetooth systems, automotive infotainment, global positioning systems (GPS), and other wireless communication systems, such as 2G, 3G, and 4G. Additionally, this part can be used in automotive control systems, such as in airbag control, power window control, and door lock control.

Working Principle

The SKY13381-374LF is a reflective type switch, which means that the RF input is reflected back out by the switch when it is not in use. This provides a low insertion loss and very high isolation between different ports, enabling the switch to have a low return loss. The switch is based on MEMS technology, which is used to create a series of tiny RF switches on a single die. Each switch (or path) is controlled by an external logic, allowing the user to select between different paths for signal routing. MEMS switches are usually recommended for applications where low insertion loss and fast switching time are important.

The SKY13381-374LF has a switch control logic that is based on CMOS technology. The CMOS logic provides a low on-resistance for the switch paths and a fast switching time for the SP4T RF switch. The device features dual-supply operation voltage, wide supply voltage range (3.1V to 3.45V), low power consumption (typical 50 µA) and highly integrated circuit design. The SP4T switch is designed in a very small package (3 x 3 mm, 0.5 mm height) which also makes it suitable for portable and wearable device applications.

Overall, the SKY13381-374LF is a very efficient and reliable SP4T RF switch which is suitable for many applications in the areas of Wireless Communications, Automotive, and GPS.

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