Dual-Band Matched SP4T Wi-Fi Switch

The SKY13575-639LF is a dual-band single-pole, four-throw switch with an integrated 50 Ω match on all RF output ports. External DC blocking capacitors are required on the RF paths. The switch can operate over the temperature range of -40 °C to 90 °C.

Switching is controlled by two CMOS/TTL compatible control voltage inputs: VC1 and VC2. Depending upon the logic voltage level applied to the control pins, the RFC pin is connected to one of four switched RF outputs (RF1 to RF4) by a low insertion loss path, while the path between the RFC pin and the other RF pins is in isolation. The isolated ports are terminated to a 50 Ω load.

The SKY13575-639LF is packaged in a small, 14-pin, 1.6 x 1.6 x 0.45 mm QFN package.


    • Off ports matched to 50 Ω
    • Low insertion loss: 0.6 dB at 2.5 GHz, 1.1 dB at 6 GHz (typical)
    • High isolation: 40 dB at 2.5 GHz, 30 dB at 6 GHz (typical)
    • Integrated GPIO interface
    • Small QFN (14-pin, 1.6 x 1.6 x 0.45 mm) package (MSL1, 260 °C per JEDEC J-STD-020)

Images & Diagrams


    • Description (Absorptive/ Reflective)
    • SP4T (A)
    • Frequency (GHz) Min.
    • 0.1
    • Frequency (GHz) Max.
    • 6.0
    • Typ. IL (dB)
    • 0.6
    • Typ. Isol. (dB)
    • 40
    • RON (Ω)
    • Typ. IIP3 (dBm)
    • 55
    • COFF (fF)
    • Vpk (V)
    • Typ. IP1 dB (dBm)
    • Control Logic
    • Package
    • QFN, 12L
    • Package (mm)
    • 1.6 x 1.6 x 0.45

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