PCM2902EG4

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The PCM2902EG4 is a high performance, cost effective mono single-chip digital audio codec. It is an integrated bridge between digital audio equipment and the analog audio world. The PCM2902EG4 provides a single-chip solution for encoding and decoding PCM audio data, which follows the Red Book Compact Disc (CD) standard. It integrates a 16-bit stereo A/D converter and a 16-bit stereo D/A converter plus line, microphone, and phone inputs and outputs. The PCM2902EG4 has a fully programmable digital mixing, mixing control, and sample-rate conversion capabilities, as well as low power dissipation of only 3.2 watts.

The PCM2902EG4 is suitable for a wide range of digital audio applications, such as portable and stationary audio and audio/video products. It is especially suited for applications where power dissipation is a concern. It is used in digital audio-video devices including computer motherboards, DVDs, portable music players, digital TV, and car audio. The PCM2902EG4 can also be used as part of an audio system that is designed to allow the user to switch between digital and analog playback.

The PCM2902EG4 supports all standard sampling rates up to 48kHz. However, the sampling rate can be higher than 48kHz with the addition of an external component. The PCM2902EG4 supports both 8x Oversampling Delta-Sigma modulator and the 16x Folded-Core Pulse-Density Modulator (PDM) encoders and decoders. The PDM decoder provides an additional dynamic range of up to 120dB and SNR ratio of up to 97dB.

The PCM2902EG4 provides a rich feature set with low-noise, low-cost, and low-power dissipation. It also provides optimized performance for digital audio systems that support multiple channels and sampling rates. The features include:

• Single-Chip Stereo A/D Converer
• Stereo Digital Mixer
• 16-Bit Stereo D/A Converer
• Compatible With Red Book CD Sampling Rates
• Line, Microphone, and Phone Inputs and Outputs
• Fully Programmable Sample Rate Selection and Digital Mixing
• Low Power Dissipation of Only 3.2 Watts

The PCM2902EG4 provides an easy and efficient way to connect digital audio equipment with the analog world. Its low-cost and low-power dissipation make it an ideal solution for various audio applications. The device supports sample-rate conversion, as well as mixing between multi-channel audio streams. Additionally, the device supports conventional analog phone interfaces, as well as PCM-bus and I2S interfaces.

The PCM2902EG4 works by converting analog signals into digital form and then back into analog form. The device uses a process known as delta-sigma modulation to convert analog signals into digital form. It works by sampling the analog signal at discrete intervals and encoding its changes in the time domain. Then, the digital data is translated back into the time domain with the help of a low-pass filter. The device also has a built-in sigma-delta modulator that converts the digital data into analog form by utilizing a multistage process.

In conclusion, the PCM2902EG4 is a low-cost, high-performance mono single-chip digital audio codec that is ideal for applications requiring low power dissipation. It supports standard sampling rates of up to 48kHz, as well as higher rates with the addition of an external component. The device provides a comprehensive set of features, including a stereo A/D converter, stereo D/A converter, line, microphone and phone inputs and outputs, and several mixing and sample rate conversion functions. It is suitable for a wide range of audio applications, including portable and stationary audio, audio/video products, and digital audio-video devices. The PCM2902EG4 can be used in both analog and digital audio systems, and provides excellent performance from a low-cost and low-power standpoint.

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