Bluesun and ADI join forces to release the second generation of FAXON Dragon & ADAU1850/1860 reference design solutions

To meet the demand for high-performance ANC products, Zhongke Bluexun and ADI jointly released the reference design solution of Xunlong Second Generation & ADAU1850/1860.

Compared with the first generation of Xunlong products, the second generation of Xunlong has made significant progress in radio frequency, power consumption, delay, etc. In particular, the entire series of the second generation of Xunlong models have integrated the ENC call algorithm of Beijing Shengjia Technology, providing the industry with more convenient and efficient solutions.

Figure 2. BT892x system block diagram

While strengthening its own active noise reduction research and development, Zhongke Bluexun is also actively engaged in in-depth solution cooperation with ADI, a technological leader in the noise reduction industry, to provide the industry with more noise reduction solution options.

ADI (Analog Devices, Inc) is the abbreviation of Analog Devices, Inc. ADI is a world-leading supplier of data conversion and signal processing technology recognized by the industry. ADI is one of the earliest companies in the industry to engage in the research and development of ANC DSP, and its ANC DSP has been widely used in flagship projects of well-known international and domestic brands.

While providing consumers with a better noise reduction experience, ADI is also continuously promoting the development of the ANC industry. The release of ADAU1850/1860 represents the best ANC DSP performance in the industry. In cooperation with Bluexun, it can provide the industry with a more cost-effective ANC solution.

Figure 2. ADI ADAU1850 system block diagram

ADAU1850/1860 has industry-leading Codec performance, with ADC performance reaching 106dB SNR, -95dBFS THD, and Audio DAC performance reaching 110dB SNR, -95dBV THD+N, which effectively reduces the background noise of the ANC system and can better ensure the sound quality when ANC is turned on. ADAU1850/1860 provides three sets of microphone interfaces, one set of DAC outputs, built-in Fast DSP to efficiently implement ANC, and provides a separate 13-stage EQ module for configurable sound effects. The overall solution is more flexible and adaptable to different application scenarios. Furthermore, ADAU1860 also has a built-in HiFi3z DSP, which can run more differentiated algorithms to meet higher-level application requirements.

To help users develop ANC solutions, ADI also provides a variety of ANC debugging tools, such as ANC filter chain design/tuning tools.

Figure 3. ADI ANC filter chain design.

Figure 4. BT892x & ADAU1850/1860 system block diagram

As shown in Figure 4, it is a reference solution of BT892x and ADAU1850/1860. The ANC part is completed by ADI, and the Bluetooth system and ENC part are completed by BT892x. By leveraging the rich interfaces of ADAU1850/1860 and the flexible application of BT892x, high-end applications such as Hybrid ANC + Dual MIC Beamforming ENC can be realized. Data communication and related control are completed between systems through I2S and I2C interfaces.

The BT892x series of Zhongke Bluexun has been mass-produced and shipped to end customers, and ADI ADAU1850/1860 has also entered the mass production stage. Detailed information on the BT892x & ADAU1850/1860 reference design solutions can be requested from Zhongke Bluexun.