BK9532 Professional Wireless Audio Receiver Chip

Build next-generation professional audio gear with the BK9532 digital chip. This complete transmitter/receiver pair delivers studio-quality wireless audio with ultra-low latency (<3ms), ideal for live performance, broadcasting, and mission-critical communication systems where precise synchronization is non-negotiable.

The system utilizes advanced pi/4-DQPSK digital modulation to provide crystal-clear, robust audio transmission across VHF (160-270MHz) and UHF (450-980MHz) bands, free from analog interference. With a high-performance audio path featuring 96dB dynamic range and wide frequency response (30Hz-20kHz), it captures every nuance of the source material.

Engineered for reliability and ease of integration, each chip integrates RF, baseband, and audio processing, eliminating external companders to reduce PCB size, boost manufacturing yield, and lower total system cost. The BK9532 receiver features sophisticated antenna diversity (up to 6 antennas), 15-band EQ, digital reverb, and anti-howling for outstanding audio control.

Key Features at a Glance:

• Complete Digital System: BK9532 Receiver chipset.

• Professional Audio Quality: 96dB SNR, <3ms end-to-end latency, 30Hz-20kHz response.

• Dual-Band Operation: Reliable performance in VHF (160-270MHz) & UHF (450-980MHz) ranges.

• Advanced Receiver Features: 6-antenna diversity, 15-band EQ, digital reverb, anti-howling, and packet loss concealment.

• Integrated & Cost-Effective: Single-chip design reduces external components, simplifies assembly, and cuts BOM cost.

• Secure & Robust: 32-bit encrypted audio/data channel with CRC for secure, reliable links.

Transmitter Chip BK9531

• Maximum transmit power: 14 dBm (VHF), 10 dBm (UHF)
• Microphone gain range: 0–47.5 dB, 0.5 dB per step
• Audio AGC and limiting
• Dedicated GPIO indicating transmitted audio signal strength (GPIO3)
• Automatic squelch
• Dual-band diversity transmission

Receiver Chip BK9532

• Receiver sensitivity: -96 dBm (VHF), -96 dBm (UHF)
• Antenna diversity supporting a maximum of six antennas and automatic antenna select
• RF AGC and AFC
• Dedicated GPIO indicating the received audio signal strength (GPIO3)
• Dedicated GPIO indicating the synchronization status of transmission and reception (GPIO0)
• Two-band 7-tap digital reverb
• Digital mute
• 15-band digital audio equalization
• Active/passive anti-howling
• Packet loss concealment (PLC)

BK9531/32 common parameter

• Supports external PCM/I2S dual-mode digital audio interface (mono and stereo)
• Supports audio sampling rates of 48 kHz, 32 kHz, 24 kHz, and 12 kHz
• Recommended operating voltage: 2.8 to 3.6 V (the operating voltage can be as low as 2.2 V, but the chip performance will be worse.)
• Operating frequency: 160–270 MHz (VHF), 450–980 MHz (UHF)
• Crystal frequency: 24.576 MHz, crystal adjustment range: +/-20 ppm
• Digital modulation method: pi/4-DQPSK; occupied bandwidth: < 300 kHz; transmission rate: 204.8 ksps; audio transmission rate: 336 kbps
• Delay: The delay from microphone input to audio output is less than 3 ms (48 kHz sampling rate, anti-howling disabled)
• Audio signal-to-noise ratio: 96 dB; frequency response: 30 Hz to 20 kHz
• One-byte dedicated data channel: 7 kbps, internal CRC check, audio and data are transmitted using 32-bit encrypted words

Ideal For:

• Professional Wireless Microphone Systems

• In-Ear Monitor (IEM) Transmitters & Receivers

• Tour Guide & Conference Systems

• Broadcast & Wireless Intercoms

• High-Fidelity Wireless Audio for Education & Houses of Worship

Simplify your design and deliver professional-grade wireless audio with the proven BK9531/BK9532 digital chipset.

For documentation and help, refer to our Knowledge Base section

Beken is the official brand name of Bekencorp.