On July 11, 2017, Datongda Holdings, a leading semiconductor component distributor dedicated to the Asia-Pacific market, announced that its subsidiary has launched a highly integrated Hi-Fi headset chip based on Realtek technology. Level solution for applications such as mid- to high-end phones, headphone amplifiers, and type-C audio headsets. This chip is Realtek's first high-integration 32bit/192 kHz Hi-Fi headphone chip-level solution - ALC5662 (QFN-48) & ALC5663 (WLCSP-56), which includes a two-channel DAC, two channels A stereo headphone amplifier and a mono ADC are used for analog microphones.
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Compared to other headphone audio solutions, the ALC5662/ALC5663 offer high-quality music quality with total harmonic distortion plus noise (THD+N) less than or equal to minus 100dB, signal-to-noise ratio (SNR) less than or equal to minus 124dB, and crosstalk interference ( Crosstalk) is less than or equal to minus 100dB, and the headphone amplifier can output 2Vrms to support the perfect listening experience of high-impedance headphones (250Ohm~600Ohm). In addition, the solution can further intelligent headphone detection, including: 3 segment / 4 segment identification, 10th-order headphone impedance detection (0Ohm ~ 50kOhm), 4 button control of the headset (Android Wired Audio Headset Specification v1.1) and a headset that supports both OMTP/CTIA pinouts.
At the same time, the ALC5662/ALC5663 also has a built-in charge pump (Charge pump) and integrates the Asynchronous Sample Rate Converter (ASRC) into the chip, which greatly reduces the system BOM cost and greatly reduces the system. The design complexity allows for an output DC bias of 0V and an output amplitude of 2Vrms without the need for a special frequency oscillator and boost buck converter.
ALC5662/ALC5663 Product Specifications
?? 32bit /192kHz Hi-Fi stereo DAC + stereo headphone amplifier
?? THD+N<=-100dB / SNR <=-124dB / Crosstalk <=-100dB
Output swing up to 2Vrms for 250Ohm~600Ohm high impedance headphone
10-step impedance sensing for different loadings of headsets/headphones
?? Support headphone (3 segment) / headset (4 segment) detection
Support 4 push buttons detection (Android Wired Audio Headset Specification v1.1)
?? ALC5662–QFN-48 (6*5.5mm^2)
?? ALC5663–WLCSP-56 (3.3*2.8mm^2)
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