PCM2903
Stereo USB audio codecs with S/PDIF and 16-bit resolution
Manufacturer： ['rochester', 'ti']
series introduction
# PCM2903 Product Series Introduction
## 1. Overview
The PCM2903 product series is a remarkable line of integrated circuits developed by Texas Instruments, specifically designed for audio applications. These devices offer a highly integrated and cost - effective solution for converting digital audio signals into analog audio, making them an ideal choice for a wide range of consumer and professional audio products.
## 2. Key Features
### 2.1 High - Quality Audio Conversion
- **High - Resolution DAC**: The PCM2903 features a high - performance digital - to - analog converter (DAC) with a resolution of up to 24 bits. This high resolution enables the reproduction of audio with exceptional clarity, accuracy, and a wide dynamic range, allowing users to experience rich and detailed sound.
- **Low Distortion and Noise**: With low total harmonic distortion plus noise (THD+N) figures, the PCM2903 ensures that the audio output is free from unwanted artifacts and interference. This results in clean and pure sound, making it suitable for high - end audio systems.
### 2.2 USB Audio Interface
- **Plug - and - Play Compatibility**: The PCM2903 is equipped with a USB audio interface that is fully compliant with the USB Audio Class 1.0 standard. This means that it can be easily connected to a computer or other USB - enabled devices without the need for additional drivers in most cases. Users can simply plug in the device and start enjoying audio playback immediately.
- **Multiple Audio Formats Support**: It supports a variety of common audio formats, including PCM (Pulse - Code Modulation), which is the most widely used format for digital audio. This flexibility allows the PCM2903 to work with a wide range of audio sources and applications.
### 2.3 Integrated Design
- **On - Chip Regulators**: The PCM2903 integrates on - chip regulators, which simplifies the external circuit design. This reduces the number of external components required, saving board space and cost. It also improves the overall reliability of the system by minimizing the potential for component failures.
- **Headphone Amplifier**: Some models in the PCM2903 series come with an integrated headphone amplifier. This allows for direct connection of headphones to the device, eliminating the need for an external headphone amplifier. The integrated amplifier provides sufficient power to drive most headphones, delivering high - quality audio directly to the user.
### 2.4 Power Efficiency
- **Low Power Consumption**: The PCM2903 is designed to operate with low power consumption, making it suitable for battery - powered devices such as portable media players, tablets, and smartphones. This helps to extend the battery life of these devices, providing users with longer periods of audio playback.
## 3. Applications
### 3.1 Consumer Audio Devices
- **USB Audio Adapters**: The PCM2903 can be used to create USB audio adapters that allow users to add high - quality audio capabilities to their computers or other devices. These adapters are popular among users who want to upgrade the audio output of their existing systems or who need to connect audio equipment to a device that does not have built - in audio ports.
- **Portable Media Players**: In portable media players, the PCM2903's low power consumption and high - quality audio conversion make it an excellent choice for providing audio playback. It can handle a variety of audio formats and deliver clear and immersive sound to the user.
### 3.2 Professional Audio Equipment
- **Audio Interfaces**: For professional audio recording and production, the PCM2903 can be used in audio interfaces. Its high - resolution DAC and low distortion characteristics ensure accurate audio reproduction, making it suitable for capturing and processing audio in
Images for reference
28-SSOP Pkg
28-SOIC
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