SKY13488-21

SKY13488-21 is an RF switch IC from Skyworks Solutions, part of the SKY13488 family. It is designed to route RF signals in wireless front-ends (cellular/LTE, Wi‑Fi, GNSS) by providing a controlled RF path with low insertion loss and high isolation. The device is a multi-port RF switch (typical SPDT/SP4T topology in this family) driven by digital select lines and operating from a single supply. It supports broad RF frequency coverage for modern wireless bands and comes in a compact, RoHS-compliant package with ESD protection. Common applications include TX/RX switching, antenna switching, and front-end module routing in transceivers and FEMs. For precise electrical specs (insertion loss, isolation, switching speed, power handling, biasing, and package details), consult the SKY13488-21 datasheet and Skyworks design guides.

Here are the typical features of SKY13488-21 (RF switch):
- 50-ohm matched RF ports
- Low insertion loss with high isolation
- Wide control input with CMOS/TTL-compatible logic
- Single-supply operation (no dual rails)
- Low dc bias current
- ESD protection on RF and control pins
- Small surface-mount package for compact boards
- Wide operating temperature range suitable for mobile/industrial use
- RoHS compliant; suitable for cellular, IoT, and RF front-end antenna switching
Note: exact specs (e.g., insertion loss, isolation, operating frequency) vary by configuration and frequency. Check the official datasheet for precise numbers.

Pin count: 6 pins.
Function: 1:2 (SPDT) RF switch with a common RF port and two selectable RF paths (RF1, RF2); digitally controlled to route the signal. 50 Ω matched.

- Manufacturer: Skyworks Solutions, Inc.
- What kind of company: A fabless semiconductor company that designs and manufactures RF/microwave integrated circuits and modules for wireless communications.

SKY13488-21 is an RF front-end switch/module used to route signals across multiple bands in wireless transceivers. Typical application areas include:
- Mobile devices (smartphones, tablets) for LTE/5G, GNSS, and WLAN front-ends
- Automotive wireless modules (telematics, ADAS)
- IoT and wearables requiring multi-band switching
- Base stations, small cells, and RF front-end assemblies
- Wi‑Fi routers, hotspots, Bluetooth gateways
- RF test equipment and development boards
- Aerospace/defense communications

SKY13488-21 is packaged in a 16-pin QFN package (3×3 mm, bottom-pad), Pb-free.