PCM2903CDB

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PCM2903CDB Application Field and Working Principle

The PCM2903CDB is a CODEC (Compressor-Decompressor) usde in digital audio applications. It is made by TI (Texas Instruments), and was originally released in 1994. This device provides both A/D (analog to digital) conversion, as well as D/A (digital to analog) conversion. It is able to handle PCM (Pulse Code Modulation) stream audio data, and is quite often used in consumer-grade, digital audio devices.

Applications

The PCM2903CDB can be used in many different types of applications. It is often used in consumer-grade audio players, such as CD players, portable media players, and some computer soundcards. It is also used in professional audio systems, such as mixing boards and PA systems. It is also becoming increasingly popular in home automation systems, as it is capable of providing both A/D and D/A conversion.

Principles

The PCM2903CDB works by taking an incoming audio data stream that is in the form of either a digital or analog signal, and then converting it to the opposite type. In analog-to-digital (A/D) conversion, the device takes an analog signal and converts it to a digital representation of the audio waveform. In digital-to-analog (D/A) conversion, it performs the opposite operation, taking a digital audio waveform and converting it to an analog representation. The PCM2903CDB can also convert between various digital audio formats, such as WAV, AIFF, and MP3.

The device is able to do this conversion quickly, and with relatively low power consumption and minimal latency. It is also capable of providing a limited amount of signal processing, and can be used as an audio level control, adjust tone or volume, and can also be used to normalize audio signals.

Closing thoughts

The PCM2903CDB is an extremely versatile and powerful device that can be used in a variety of applications. It is capable of providing both A/D and D/A conversion with minimal power consumption and latency. It is also able to provide limited signal processing, making it a great choice for digital audio applications.

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