Skyworks Solutions Inc. SKY13374-397LF

Overview

SKY13374-397LF from Skyworks Solutions is a CMOS silicon-on-insulator (SOI) single-pole, double-throw (SPDT) RF switch optimized for WCDMA handset and data card applications. It operates from 300 kHz to 6.0 GHz, delivers 0.35 dB insertion loss at 1 GHz, supports 1.65–3.0 V control logic, and integrates an internal negative voltage generator eliminating external DC blocking capacitors.

For engineers reviewing the SKY13374-397LF datasheet, SKY13374-397LF pinout, SKY13374-397LF application, or SKY13374-397LF equivalent, this device is selected for high-linearity antenna switching in dual-band WLAN and WCDMA systems where broadband isolation, low power consumption (<5 μA shutdown), and QFN-packaged manufacturability are critical.

Technical Context

The SKY13374-397LF implements a CMOS SOI-based SPDT architecture with integrated decoder and on-chip negative voltage generation, enabling true DC-coupled RF paths without external blocking capacitors. Its switching state is determined by binary logic on V1 and V2 pins, supporting three defined states: RF1→RF2, RF1→RF3, and shutdown.

It achieves +39 dBm 0.1 dB input compression point and +68 dBm IIP3 across 0.8–3.0 GHz, ensuring robust linearity for WCDMA bands 1–6 and 8–11. Isolation remains ≥25 dB up to 3.0 GHz and ≥18 dB at 6.0 GHz, with thermal operation validated from –40 °C to +85 °C.

Key Specifications

Pinout & Package

SKY13374-397LF is housed in a 12-pin Quad Flat No-Lead (QFN) package measuring 2.0 × 2.0 mm with 0.5 mm lead pitch and an exposed thermal pad requiring low-impedance grounding per JEDEC J-STD-020 (MSL1, 260 °C).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar SPDT RF switch applications.

Compared with QM11030 and BGU7005, the SKY13374-397LF uniquely combines full 6 GHz bandwidth, integrated DC coupling, and WCDMA-grade linearity in a pin-compatible 12-pin QFN - making it the only option for high-performance, space-constrained WCDMA handset front-ends requiring zero external RF capacitors.

Availability

SKY13374-397LF is available at Aetrix Electronics and suitable for WCDMA handset design, dual-band WLAN module integration, and mobile data card front-end development requiring stable component supply, full production traceability, and long-term lifecycle support.

Supply support for SKY13374-397LF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Skyworks Solutions is a U.S.-based semiconductor company specializing in analog and mixed-signal RF components for wireless infrastructure, mobile, and automotive markets.

The SKY13374-397LF belongs to Skyworks' high-linearity SOI SPDT switch product line, engineered specifically for WCDMA and LTE handset front-ends demanding broadband performance, low power, and minimal external components.

FAQ

What is the operating frequency range of the SKY13374-397LF?

The SKY13374-397LF operates from 300 kHz to 6.0 GHz. This full-range coverage supports WCDMA Bands I–VI and VIII–XI, 802.11a/b/g/n, and emerging 5 GHz unlicensed bands without band-specific tuning. Measured performance is specified across the entire span, including insertion loss, isolation, and return loss.

Does the SKY13374-397LF require external DC blocking capacitors?

No, the SKY13374-397LF does not require external DC blocking capacitors. Its integrated negative voltage generator enables true DC-coupled operation on all RF ports (RF1, RF2, RF3). This eliminates two to four 0201/0402 capacitors per switch, reducing BOM cost and PCB area while improving broadband matching stability.

What are the control voltage requirements for the SKY13374-397LF?

The SKY13374-397LF requires V1 and V2 control inputs of 1.65–3.0 V for logic high and ≤0.3 V for logic low, with VBATT supplied at 2.5–4.8 V. These levels match standard 1.8 V and 2.8 V baseband processor GPIOs, eliminating level shifters in most mobile designs.

How does the SKY13374-397LF achieve its high linearity?

The SKY13374-397LF achieves +39 dBm IP0.1dB and +68 dBm IIP3 through Skyworks' proprietary CMOS silicon-on-insulator (SOI) process and optimized switch topology. Its high 0.1 dB compression point ensures minimal distortion under WCDMA modulated signals, maintaining ACLR and spectral purity without external linearization.

What is the thermal and packaging specification for the SKY13374-397LF?

The SKY13374-397LF uses a 12-pin QFN package measuring 2.0 × 2.0 mm with 0.5 mm pitch and an exposed thermal pad. It is rated MSL1 per JEDEC J-STD-020 (260 °C peak reflow), qualified for both leaded and lead-free soldering, and operates from –40 °C to +85 °C ambient temperature.