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Overview

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The BK5812 is a high data rate FSK/GFSK transceiver operating in the worldwide ISM frequency band at 2.400–2.500 GHz. The embedded packet processing engine enables the BK5812 to function as a radio system with a very simple MCU. Burst mode transmission of up to 6 Mbps air data rate makes it suitable for applications requiring ultra-low power consumption and high data rate. Automatic retransmission and automatic acknowledgment provide a reliable link without any MCU interference.

The BK5812 is available in a 24-pin, 4 x 4 mm QFN package.

Features

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 Worldwide 2.4 GHz ISM band operation

 Integrated TRX switch and balun, etc. to reduce external components

 FSK enables better sensitivity and GFSK enables better spectrum efficiency

 Supports multiple data rates, such as 0.25 Mbps,1 Mbps,2 Mbps,4 Mbps, and 6 Mbps air data rates

 Maximum 2 ms to start up from power-down mode

 Maximum 130 µs to start up from standby-I mode

 Supports data rate adaptation between 1 Mbps, 4 Mbps, and 6 Mbps for applications requiring both high data throughput and long range

 Ultra-low sensitivity: -96dBm at 1 Mbps data rate

 Programmable output power

 Up to 12 dBm output power

 16 MHz crystal with +/- 20 ppm tolerance

 Three-level variable payload length from 1 to 32 bytes or from 1 to 256 bytes

 Automatic packet processing

 6 data pipes for 1:6 star networks

 1.8 to 3.6 V power supply

 4-wire SPI for interfacing with MCU, maximum 8 Mbps clock rate

 Compact 24-pin, 4 x 4 mm QFN package