EN
Our Product
产品中心
Product Category
The BK9531/32 chip is a chipset used for wireless high-quality voice transmission, including the transmitting chip BK9531 and the receiving chip BK9532. Each chip covers a frequency range of V segment 160-270MHz and U segment 500-980MHz
Classification:
IC/Optical Lotus
WIFI IC
- Product Description
-
- Commodity name: The BK9531/32 chip is a chipset used for wireless high-quality voice transmission, including the transmitting chip BK9531 and the receiving chip BK9532. Each chip covers a frequency range of V segment 160-270MHz and U segment 500-980MHz
Overview
The BK9531/32 chip is a chipset used for wireless high-quality voice transmission, including the transmitting chip BK9531 and the receiving chip BK9532. Each chip covers a frequency range of V segment 160-270MHz and U segment 500-980MHz.
BK9531/BK9532 adopts pi/4 DQPSK digital modulation and high-performance audio ADC and DAC, combined with extremely low latency audio codec, to achieve high fidelity digital audio transmission, which can be applied to sight singing, stage performances, and teaching systems.
Due to the complete integration of RF to baseband on a single chip, BK9531/BK9532 eliminates the need for a compression expander, significantly reducing PCB size and greatly improving production reliability, thereby reducing system costs.
Features of the transmitting chip BK9531:
1. Maximum transmission power: 14 dBm (V segment) and 10 dBm (U segment)
2. Microphone gain range: 0~47.5 dB, 0.5 dB per step
3. Audio AGC and amplitude limiting
4. Dedicated GPIO indicates the transmitted audio signal energy (GPO3)
5. Automatic noise reduction, supporting dual frequency diversity transmission
Features of receiving chip BK9532:
1. Reception sensitivity: -96 dBm (V segment) -96 dBm (U segment)
2. Supports up to 6 antenna diversity and automatic antenna selection
3. RF AGC and AFC
4. Dedicated GPIO indicates the received audio signal energy (GPO3), and dedicated GPIO indicates the synchronous status of transmission and reception (GPO0)
5. Two segments of 7-tap digital reverberation, digital mute, 15 segment digital audio equalization, active/passive anti howling, packet loss compensation mechanism
BK9531/32 Common parameters:
1. Supports external PCM/IIS dual-mode digital audio interface (single and dual channel), supporting 48k/32k/24k/12k audio sampling rates
2. Packaging: QFN 5x5 32 Pin
3. Recommended working voltage: 2.8~3.6 V (can work up to 2.2V at low voltage, but performance may deteriorate)
4. Operating frequency: 160~270 MHz (V-band); 450-980 MHz (U-band)
5. Crystal frequency: 24.576 MHz, crystal adjustment range:+/-20 ppm
6. Digital modulation method: pi/4 DQPSK; Occupation bandwidth:<300 kHz; Transmission rate of 204.8Ksps; Audio transmission rate 336kbps
7. Delay: The delay from microphone input to audio output is less than 3ms (in 48 kHz sampling rate mode and without using anti howling function)
8. Audio signal-to-noise ratio: 96 dB, frequency response: 30~20 kHz
9. 1-byte dedicated data channel: 7 kbps, internal CRC check, audio and data are transmitted using 32-bit encrypted words
Related Products
8613632534755
Address: 12F, Building C, Tongjian Building, Nanyuan Street, Futian District, Shenzhen
