PCM2903E

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PCM2903E Application Field and Working Principle

The PCM2903E is a single-chip digital audio signal processor based on an 18-bit Sigma-Delta MOD converting architecture. It is specially developed for the USB audio system that provides superb performance in USB interfaces. It is the perfect solution for building up a high performance, low-cost single-chip USB recording and playback system. This article will discuss the application field and working principle of PCM2903E.

PCM2903E Application Field

The PCM2903E is a very versatile processor. It has been designed with a PCM serial port which can be configured as either an input or an output. Therefore, it can be used to drive a wide range of interfaces such as USB, parallel port, serial port, I2S, etc. It can also be used as a digital mixing and mixing processor by utilizing the signal mixing features provided in the PCM2903E.

The PCM2903E is also very convenient in terms of controlling multiple audio processing functions. It has a total of four internal signal pads which can be used to add gain, adjust the sample rate, make analog-to-digital and digital-to-analog conversions, etc. All of these can be controlled through its on-board serial interface.

The PCM2903E is also particularly suitable for applications such as USB audio systems, low-cost gaming platforms and portable media players which require a high-performance, cost-effective solution. Its features make it the ideal tool for making real-time data streaming and voice recording applications.

PCM2903E Working Principle

The PCM2903E is based on a Sigma-Delta MOD converter architecture which enables it to digitally process audio signals. It takes in the analog input signal and converts it to a digital signal which is then output to the outputs. This process is done without introducing any distortion or degradation to the original audio signal.

The PCM2903E also implements techniques such as sample-and-hold, digital low-pass filtering and noise shaping to further reduce the total harmonic distortion and increase the signal-to-noise ratio. This ensures good quality audio signals from the PCM2903E.

The PCM2903E also supports three different data formats for digital audio streaming which are PCM, LSBfirst and MSBfirst. Additionally, it also supports two sampling rates of 44.1 KHz and 48 KHz, with a programmable sample size of 8 and 16-bit. All of these features make it a powerful, but flexible product which can be used in a variety of applications.

Conclusion

The PCM2903E is a versatile audio signal processor which is suitable for a wide range of applications. It is based on an 18-bit Sigma-Delta MOD converter architecture and supports multiple audio data formats and sampling rates. The PCM2903E is a powerful, low-cost and high-performance solution for USB audio systems and other audio applications.

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