description
Due to the cancellation of the 3.5mm interface of the Apple mobile phone, wireless headsets, especially low-cost wireless earphones, have experienced explosive growth in recent years. With the growth of low-cost wireless earphones becoming saturated, recently, manufacturers have turned to wireless high-definition earphones and headphones, and wireless high-fidelity headphones have also achieved a good market space.
Given the gradual saturation of these markets, it is particularly important to seek a more attractive market. With the rapid development of the headset market, noise-reduction headphones have gradually entered the mainstream of the market, and the market potential is huge. However, since the noise canceling headphones are currently monopolized by a few brands and the price is high, the market potential is far from being discovered. Develop a headset with low cost, equivalent noise reduction performance, and high-quality sound quality equivalent to high-fidelity headphones. It will obviously become the new army in the market, injecting fresh blood into the noise-reducing headphones and driving it to ordinary users. Expand and explore market potential.
Shenzhen Yongkang Technology Co., Ltd. based on this market consideration, launched a low-cost, adaptive active noise reduction, high-fidelity Bluetooth headset solution. Its TP4101 + YFK2017 + HT97220 solution eliminates the need for expensive independent active noise reduction chips, achieving high performance adaptive active noise reduction and high fidelity professional HiFi quality.
Among them, YFK2017 is a fully integrated adaptive active noise reduction dual-mode Bluetooth headset chip with full integration, high performance, low power consumption, and can support BT4.2 and BLE4.2 at the same time, support HIFI sound quality (192Khz/ 24bit), SNR greater than 100dB, support EQ and various audio technologies (such as subwoofer, 3D surround, etc.), support a variety of noise cancellation technology, especially high-performance adaptive active noise reduction technology, can make high-end active noise reduction headphones Eliminate expensive independent active noise reduction chips.
The HT97220 is a professional Hi-Fi headphone amplifier with an extremely compact BOM that eliminates the need for DC blocking capacitors, exceptional distortion, signal-to-noise ratio and completely disappearing click-pop sound, as well as excellent low frequency fidelity. degree.
Program characteristics
1, Bluetooth version 2.1 + 4.2 dual-mode Bluetooth headset with call function (A2DP v1.3/AVRCP v1.5/HFP v1.5)
2, support SD / MMC card
3, USB 2.0 communication protocol
4, 2 active noise cancellation microphones, 2 microphone voice recognition ports
5, the main power supply 3.1V -- 5.5V
6, 5 full configuration EQ function
7, with I2S digital audio output interface
8, external HI_FI field enthusiast amp HT97220 maximum output 125mW
9, efficient dynamic battery charging management TP4101
characteristic
â— Noise-cancelling headphones for HI_FI field enthusiasts
â— BGA package occupies a small area
â— With super high SNR sound quality, restore acoustic real content, enjoy the sound quality of the sound
â— Ultra low power consumption
â— 600mA high efficiency fast lithium battery charging circuit with overcharge, over discharge and short circuit protection
Block diagram
PCB DEMO board
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