Skyworks Solutions Inc. SKY13354-368LF

Overview

SKY13354-368LF from Skyworks Solutions is a pHEMT GaAs dual SPDT crossed RF switch designed for cellular infrastructure band switching, supporting 0.1–3.0 GHz operation with 0.55 dB typical insertion loss (2.0–3.0 GHz), 32 dB max isolation, and +33 dBm P0.2dB at 5.0 V control voltage. It enables balanced RF filter switching in macro base station transceivers.

For engineers reviewing the SKY13354-368LF datasheet, SKY13354-368LF pinout, SKY13354-368LF application, or SKY13354-368LF equivalent, key selection criteria include broadband isolation performance across 3 GHz, dual-control logic compatibility with 1.6–5.0 V CMOS/TTL levels, QFN-12 package thermal and RF layout constraints, and DC blocking requirements on all six RF ports.

Technical Context

The SKY13354-368LF implements two independent SPDT switches in a crossed configuration: RFCA connects to either RF1A or RF2A, while RFCB connects to either RF1B or RF2B-enabling simultaneous antenna path routing for MIMO or diversity architectures. Control logic uses two discrete voltage inputs (V1/V2) with defined "1" (+1.6–5.0 V) and "0" (0–+0.2 V) states per Table 5.

It operates as a reflective short on isolated RF ports and requires external DC blocking capacitors on all six RF terminals (RF1A, RF1B, RF2A, RF2B, RFCA, RFCB). The device is specified from –40 °C to +85 °C ambient, with MSL1 rating for 260 °C reflow compatibility and 5 μA max control current draw.

Key Specifications

Pinout & Package

SKY13354-368LF uses a 2 × 2 mm, 12-pin QFN package with exposed thermal paddle (JEDEC MO-220, MSL1, 260 °C reflow compatible). The bottom paddle must be soldered to a solid ground plane via multiple vias for thermal and RF performance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with QM11025 and BGU7005, the SKY13354-368LF delivers superior isolation (32 dB) and higher P0.2dB (+33 dBm) within its 3.0 GHz bandwidth-making it optimal for high-power macro infrastructure where linearity and inter-band rejection are critical.

Availability

SKY13354-368LF is available at Aetrix Electronics and suitable for macro base station transceivers, active antenna systems, and MIMO diversity switching requiring stable component supply, long-term lifecycle assurance, and traceable sourcing for telecom infrastructure programs.

Supply support for SKY13354-368LF 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 global leader in high-performance analog semiconductors for wireless communications, delivering RF front-end solutions for mobile, infrastructure, and automotive markets.

The SKY13354-368LF belongs to Skyworks' high-linearity GaAs pHEMT switch portfolio, engineered specifically for cellular infrastructure applications demanding broadband performance, high isolation, and robust power handling in compact packages.

FAQ

What is the absolute maximum RF input power rating for the SKY13354-368LF?

The SKY13354-368LF has an absolute maximum RF input power rating of +30 dBm, as specified in Table 2 of the datasheet. Exceeding this level-even momentarily-may cause permanent damage. For reliable operation, design margins should maintain peak input power ≤ +27 dBm under worst-case modulation and temperature conditions. The SKY13354-368LF's P0.2dB reaches +33 dBm at 5.0 V control, confirming headroom below the absolute limit.

Does the SKY13354-368LF require external DC blocking capacitors on all RF ports?

Yes, the SKY13354-368LF requires external DC blocking capacitors on all six RF ports (RF1A, RF1B, RF2A, RF2B, RFCA, RFCB) for proper operation, as explicitly stated in the Description section and Table 1. This is mandatory because internal DC paths would otherwise disrupt biasing of connected components such as PAs, LNAs, or filters. The SKY13354-368LF itself contains no internal blocking capacitors.

What is the recommended minimum clearance around the exposed thermal pad of the SKY13354-368LF?

The SKY13354-368LF's exposed thermal pad must be connected to a solid ground plane using ≥4 thermal vias (0.3 mm diameter, spaced ≤0.8 mm apart) beneath the pad, per Figure 13 and Skyworks Application Note AN-1003. Minimum solder mask clearance is 0.05 mm beyond pad edges. Inadequate grounding increases junction temperature and degrades P0.2dB and isolation-verified in Figure 8's thermal derating curves for the SKY13354-368LF.

Can the SKY13354-368LF operate with only one control voltage applied (e.g., V1 = 2.7 V, V2 = 0 V)?

Yes-the SKY13354-368LF truth table (Table 5) defines two valid operating states: (V1=1, V2=0) routes RFCA→RF1A and RFCB→RF1B; (V1=0, V2=1) routes RFCA→RF2A and RFCB→RF2B. Any other combination-including floating, mismatched, or intermediate voltages-places the device in an undefined state. While undefined states won't damage the SKY13354-368LF, they yield unpredictable RF path connectivity and degraded isolation.

Is the SKY13354-368LF pin-compatible with earlier Skyworks dual SPDT switches like SKY13353-368LF?

No, the SKY13354-368LF is not pin-compatible with SKY13353-368LF. Although both are 12-pin QFN dual SPDT switches, their pin assignments differ significantly: SKY13354-368LF places V1 at Pin 5 and V2 at Pin 11, whereas SKY13353-368LF assigns V1 to Pin 11 and V2 to Pin 5, and swaps several RF port locations. PCB layout reuse is not possible without redesign. This distinction is confirmed by comparing Figures 2 and 10 in their respective datasheets.