On January 7, 2022, Analog Devices China (Airnold Semiconductor) held a "Voice of the Core" media sharing party in Beijing, and Aintro Technology was invited to participate. At the meeting, Zhao Yimiao, General Manager of ADI China Products Division, and He Yuan, Senior Marketing Application Manager, reviewed the media and introduced several chip products released by ADI China Division this year that are used in different industries.
The closest to consumer electronics are the ADAU1860 chip solution for TWS headphones and the ADAU1850 chip, which provides a separate active noise cancellation function, and the ADPD6000 sensor front end for monitoring vital signs (ECG, OXI, body fat percentage).
In the early days of noise-cancelling headphones, analog noise reduction was already a major technology supplier to BOSE, the largest noise-canceling headphone brand at the time. In the digital age, ADI has also given a perfect solution, and the previous generation of products has been adopted by noise-canceling headphone manufacturers such as BOSE, Magic, and Bird.
Among them, the ADAU1850 is a chip that provides noise reduction function alone, which achieves a package size of 3.0x1.8mm, which can be easily integrated into the existing Bluetooth headset scheme by means of external chip. It offers a signal-to-noise ratio of 106dB, a sample rate of 768kHz, and a 3 V noise floor with 5 s end-to-end low latency.
The full-featured ADAU1860 chip, which integrates noise reduction and other headphone-related functions, provides stronger DSP computing power, supports adaptive EQ, spatial audio, voice wake-up, wind noise protection, and achieves ultra-low power consumption of 6mW at the hardware level. For both of the above chips, ADI provides manufacturers with ANC filter development tools and overall algorithm reference designs, which are very easy to get started.
ADAU1860 chip
Both chips were independently developed by ADI China to remove applications in TWS Bluetooth headsets. ADI also plans noise cancellation in spaces such as cars and kitchens, and also looks ahead to the future use of its chips in hearing aids, and also mentions the importance of noise-canceling headphones for hearing protection.
Following the audio solution, ADI also introduced the ADPD6000 solution for vital signs monitoring (VSM). The chip was also independently designed and developed by ADI China. It is mainly used for health monitoring on smart watches, providing monitoring functions for heart rate, ECG, blood oxygen, and body fat rate.
In the heart rate, blood oxygen optical monitoring part can provide a very high signal-to-noise ratio, in different skin tones, tattoos, ambient light conditions can ensure a high original signal quality. The electrode monitoring of ECG and body fat is also optimized for the skin state of different scenarios (such as dry environment in winter). ADI also provided a watch engineering prototype with integrated chip on the spot, opened the body fat rate monitoring experience, and after the field test of me and other media peers and friends, the data accuracy is high, and the deviation from the test data of my use of the body fat scale is very small. We can expect smart watches equipped with body fat rate monitoring to be launched within the year.
Engineered prototype body fat test data based on ADPD 6000
Body fat scale, body fat clip test data
(I know it's time to lose weight, please spray lightly)
At the same time, ADI also revealed that it is also developing sensors and technologies to support optical CNIBP (cuffless blood pressure monitoring) and blood glucose monitoring. As a technology supplier, ADI not only provides hardware equipment, but also provides a complete set of software algorithms, but also provides in-depth customization and consulting, joint development, and even helps manufacturers "through medical device certification".
(I can't help but think of Mr. Luo's famous quote "It's all supplier technology, what is installed here...", but this supplier technology is really too complete)
In addition to the above two main products, the ADBMS1816 battery management solution for electric vehicles and the ADuCM430 optical module controller were also introduced at the ADI conference.