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FM3418

  • The FM3418 is a single-pole eight-throw (SP8T) antenna switch. The high linearity performance and low insertion loss achieved by the FM3418 make it an ideal choice for main/diversity switching commonly used in LTE-ba<x>sed handsets data cards and tablets that use antenna diversity solutions.


    FM3418概述:
    The FM3418 is a single-pole, eight-throw (SP8T) antenna switch. The high linearity performance and low insertion loss achieved by the FM3418 make it an ideal choice for main/diversity switching commonly used in LTE-based handsets, data cards, and tablets that use antenna diversity solutions. The FM3418 is part of a scalable family of products that covers SP4T through SP8T switches that allow up to eight bands of WCDMA/LTE.
      FM3414 SP4T Antenna Switch
      FM3416 SP6T Antenna Switch
      FM3418 SP8T Antenna Switch (this Data Sheet)
    The symmetric port designs provide flexibility in signal routing for both receive diversity and higher power TD-SCDMA/TDD-LTE, WCDMA/FDD, and LTE transmit/receive applications.
    Switching is controlled by three CMOS/TTL compatible control voltage inputs (V1, V2, and V3). Depending on the logic voltage level applied to the control pins, the ANT pin is connected to one of eight switched RF input/output (I/O) ports (RF1 to RF8) using a low insertion loss path, while the paths between the ANT pin and the other RF pins are in a high isolation state. No external blocking capacitors are required on the RF paths unless VDC is applied externally.
    The FM3418 is manufactured in a compact, 14-pin 2.0 x 2.0 mm, Quad Flat No-Lead (QFN) package. A functional block diagram is shown in Figure 1. The pin configuration and package are shown in Figure 2. Signal pin assignments and functional pin descriptions are provided in Table 1.


    FM3418特性:
    Broadband frequency range: 0.1 to 3.0 GHz
    Low insertion loss: 0.75 dB typical @ 2.7 GHz
    High isolation: >18 dB @ 2.7 GHz Integrated logic
    Small QFN (14-pin, 2.0 x 2.0 mm) package (MSL1, 260℃ per JEDEC J-STD-020)


    FM3418应用:
    Any 2G/3G/4G antenna diversity or LTE
    (TDD/FDD) transmit/receive system for which
    GSM transmit is not required


    FM3418功能框图:



    FM3418引脚示意图:



    FM3418引脚描述:



    FM3418应用示意图:
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