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无线语音
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  BK4813/4815  
The BK4815 is a half duplex TDD FM transceiver operating from 124 MHz to 560 MHz band for worldwide personal radio. Besides speech communication, the BK4815 on-chip FSK data modem supports F2D and F1W emission to be used in both FRS and DPMR band for text message and GPS information exchange.

The BK4815 is a complete, small form factor solution optimized for low-power, low-cost, and highly integrated mobile and portable consumer electronic devices, requiring only a few external decoupling capacitors and an external inductor for input matching.

Features

    World wide band: 123 ~ 560 MHz

    12.5/25 kHz channel spacing

    On chip 5 dBm RF PA

    3.0 V to 3.6 V power supply

    CTCSS tone receiver with up to parallel eight frequency detector

    23/24 bit programmable DCS code

    Standard DTMF and programmable in-band dual tone

    SELCALL and programmable in-band single tone

    1.2/2.4 kbps FSK data modem with either F2D or F1W modulation type

    Frequency inversion scrambler

    Voice activated switch (VOX) and time-out timer

    RF Signal strength measurement and signal quality measurement

    TX Audio signal strength indication and RX audio signal strength indication

    3-wires interface with MCU with maximum 8 Mbps clock rate

    QFN 4x4 32-Pin package

Applications

    Personal Radio Service

    Baby Monitor

    Toys

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