Recently, the company announced that its company will launch Nuvoton-based Type-C and TI-based Lightning digital headset solutions.

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The traditional earphone adopts the 3.5mm interface of the analog circuit. Because the built-in digital-to-analog conversion chip of the audio output terminal is required for digital-to-analog conversion, it is limited by the large size of the module and the inability to further expand. This is also directly a trigger for 3.5mm being replaced by a more advanced digital interface. Among the many rising stars who have the opportunity to replace the 3.5mm interface, the USB-Type C and Lightning interfaces are the most promising.

According to IHS Technology's report, the market with the largest usage of USB-Type C interfaces will be concentrated on smartphones, tablets and laptops. Apple and Google first used the Type-C interface on notebook tablets, and Intel began to prepare for the replacement of 3.5mm analog audio interfaces with USB Type-C at both ends of the hardware and software.

Apple's Lightning interface, also known as the Lightning Interface, is a proprietary connector specification made by Apple. It first appeared in the 2012 iPhone 5 conference, and the new iPhone and iPad are equipped with this Lightning data interface. On the latest iPhone 7, the traditional 3.5mm interface is directly replaced by the Lightning interface.

Digital headsets will be the breakthrough for USB Type-C and Lightning in wearable applications. From high-definition lossless audio sources to audio processing circuits to audio output devices, the digital audio revolution of the 3.5mm analog audio interface on the mobile phone side is imperative and has huge market space. The United Nations General Assembly has introduced a digital headset solution with USB-Type C interface and Lightning interface.

The United Nations General Assembly launched the Nuvoton-based USB Type-C digital headset solution :

Picture 1.jpg

Figure 1 - Nuvoton's USB Type-C Digital Headset Solution System Framework

Functional description

1 Support USB Type-C interface, support for forward and reverse insertion

2 support call function

3 Realize Hi-Fi level sound quality

Important feature

1 Supports 24 bit 44.1/48K sampling rate

2 Audio encoding code is external, reducing loss

Picture 2.jpg

Figure 2 - Nuvoton's USB Type-C Digital Headset Solution Photo

The United Nations General Assembly launched a TI-based Lightning digital headset solution :

Picture 3.jpg

Figure 3 - System diagram of TI's Lightning digital headset solution launched by the company

Functional description

1 Support Apple Lightning interface, support for forward and reverse insertion

2 support call function

3 Realize Hi-Fi level sound quality

Important feature

1 Decode chip internal integrated LDO

2 ultra low power consumption

Picture 4.jpg

Figure 4 - Photo of TI's Lightning Digital Headset Solution launched by the United Nations General Assembly

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