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BK4819 Half duplex TDD FM transceiver/high-performance digital walkie talkie RF transceiver chip
Classification:
IC/Optical Lotus
WIFI IC
- Product Description
-
- Commodity name: BK4819 Half duplex TDD FM transceiver/high-performance digital walkie talkie RF transceiver chip
Overview
BK4819 is a half duplex TDD FM transceiver that operates in the frequency range of 18MHz~620MHz and 840MHz~1200MHz, suitable for personal radios worldwide. In addition to voice communication, the BK4819 on-chip FSK data modem also supports F2D and F1W transmission, which can be used in FRS and DPMR frequency bands for text message and GPS information exchange.
BK4819 is a complete small-sized solution optimized for low-power, low-cost, and highly integrated mobile and portable consumer electronics devices, requiring only a few external decoupling capacitors and an external inductor for input matching.
characteristic
Global frequency bands: 18 MHz~620 MHz, 840 MHz~1200 MHz
12.5/25/6.25/20 kHz channel spacing
On chip 7 dBm RF PA
3.0V to 3.6V power supply
CTCSS audio receiver with tail CTCSS frequency detector
23/24 bit programmable DCS code
Standard DTMF and programmable dual tone in band
SELCALL and programmable in band single tone
FSK data modem
• Inverted frequency disruptor
Voice activated switch (VOX)
RF signal strength measurement
TX audio signal strength indicator and RX audio signal strength indicator
• Frequency scanning function
3-wire interface with MCU with maximum clock speed of 8 Mbps
QFN32 package, 4 x 4 millimeters
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