SKY85743-31

SKY85743-31 is an RF front-end module (FEM) from Skyworks Solutions that sits between a wireless transceiver and the antenna. It integrates core RF blocks—typically a power amplifier (PA), a low-noise amplifier (LNA), an RF switch, and impedance matching/filtering networks—plus biasing and protection in a compact package. The -31 variant is one option in the SKY8574x family; exact band coverage and pinout depend on the specific variant. It’s designed to simplify mobile/IoT designs by reducing external components and PCB area while delivering suitable gain, isolation, and linearity for multi-band operation. Typical applications include cellular/Wi‑Fi/Bluetooth front-ends, mobile hotspots, and other compact wireless devices. For precise capabilities (bands, gain, output power, noise figure, IP3, supply/bias requirements), consult the latest datasheet and evaluation guides. If you share target bands or the application, I can tailor the summary to the -31 variant.

SKY85743-31 is a GNSS front‑end module. Key features:
- Integrated LNA with RF matching and filtering for GNSS bands (L1/E1 and related signals)
- 50-ohm input/output impedance with compact front-end integration
- Low noise figure and adequate gain for strong receiver sensitivity
- High linearity to improve performance in multipath environments
- Single-supply operation with bias control; enable/shutdown pin for power saving
- Low current consumption suitable for mobile/IoT and automotive applications
- Small, rugged package (designed for compact footprints) with ESD protection
- RoHS-compliant and suitable for rugged environments
Note: exact electrical specs (gain, NF, IP3, current, operating range) are in the datasheet; refer to it for precise values and recommended biasing.

- Manufacturer: Skyworks Solutions, Inc.
- What kind of company: An American fabless semiconductor company that designs and markets RF and microwave front-end modules, switches, amplifiers, LNAs, filters, and related RF components for wireless communications (mobile devices, infrastructure, IoT, automotive, aerospace/defense).

Skyworks SKY85743-31 is an RF front-end module intended for sub-6 GHz cellular applications. Common application areas include:
- Mobile devices: smartphones, tablets, wearables
- Mobile broadband modules: hotspots, USB modems
- IoT gateways and industrial IoT devices
- Any wireless device needing compact RF switching/routing for multiple antennas and bands in 5G/LTE sub-6 GHz
It is used to switch/route RF signals between antennas and bands in a compact package, enabling efficient front-end operation in modern mobile devices.

2×2 mm QFN (LFCSP), 16‑pin.