AK5538VN Integrated Circuits (ICs)

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AK5538VN is a high-performance, one-chip digital audio system developed by AKM Semiconductor, Inc. It combines the functionality of both an Analog-to-Digital (ADC) and a Digital-to-Analog (DAC) converter. This chip is particularly suited for audio applications such as car audio, home theater systems, portable media players and other audio devices. The AK5538VN is also suitable for Digital Signal Processing (DSP) with low noise and minimal distortion.

The AK5538VN is designed to provide high dynamic range, high performance and low power dissipation. The chip is built on a 64-bit architecture and is capable of performing 64-bit floating-point arithmetic performance. It supports up to 24-bit resolution for both the ADC and DAC. The input and output data formats can be either I2S or TDM. The sampling rate for both the ADC and DAC is up to 192kHz. The device requires a low supply voltage between 1.8V and 3.6V.

The AK5538VN features a number of advanced features such as an 18-bit DAC and an 18-bit ADC for an improved signal-to-noise ratio (SNR) and low total harmonic distortion (THD). It also has a low-pass filter (LPF) for blocking unwanted oscillation frequencies, a high-pass filter (HPF) for eliminating noise and transient signals, and a digital de-emphasis circuit for improved dynamic range. The AK5538VN also supports selectable digital volume control and dual low-noise microphone inputs.

The AK5538VN has its main application field in audio systems, such as car audio, home entertainment systems, and personal audio players. It also offers design flexibility for DSP and other audio applications. The AK5538VN features an improved audio quality with low noise and minimized distortion for both input and output signals. In addition, its advanced features such as the LPF and HPF give designers the ability to fine-tune audio fidelity.

The heart of the AK5538VN system is its ADC and its DAC. The ADC is a sampling and quantization system that converts the analog input signal into a digital representation of the signal. The ADC has a bit resolution of 18 bits and is capable of operating at sampling frequencies up to 192kHz. The ADC implements a Delta Sigma modulation method for a high signal-to-noise ratio (SNR) and low total harmonic distortion (THD). The DAC takes the digital audio data and converts it back into an analog signal through a digital-to-analog conversion process.

The digital de-emphasis circuit helps to reduce distortion caused by input signal levels that are too high. The low-pass filter (LPF) and high-pass filter (HPF) are digital filters that remove unwanted frequencies from the signal. The digital volume control allows for the selection of predetermined volume levels for the input and output signals. The dual low-noise microphone inputs enable multiple microphone signals to be mixed together to produce a more complex sound.

The AK5538VN is a high-performance and cost-effective solution for audio systems, whether it is for car audio, home theater systems, or portable audio devices. The AK5538VN’s advanced features, such as its 18-bit ADC and 18-bit DAC, low-noise microphone inputs, and selectable digital volume control, give it an edge over other chips with similar capabilities. Its low power dissipation makes it a great choice for a broad range of applications where signal-to-noise ratio and low total harmonic distortion are important parameters.

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