PCM2904DBR

The PCM2904DBR is a highly integrated USB audio codec from Texas Instruments, designed for high-performance audio applications. This device is particularly well-suited for USB audio interfaces, providing a bridge between digital audio signals and analog audio outputs.

Key Features:

1. USB Interface: The PCM2904DBR supports USB 1.1 and USB 2.0 standards, allowing for easy connectivity to computers and other USB-enabled devices. It features a full-speed USB interface, which enables data transfer rates of up to 12 Mbps.

2. Audio Performance: The codec supports high-quality audio playback and recording, with a 16-bit resolution and sampling rates of up to 48 kHz. This ensures that audio fidelity is maintained, making it ideal for applications such as music production, gaming, and multimedia playback.

3. Integrated Components: The PCM2904DBR integrates a stereo DAC (Digital-to-Analog Converter) and ADC (Analog-to-Digital Converter), which simplifies the design of audio systems by reducing the number of external components required. This integration helps in minimizing the overall footprint of the design.

4. Analog Outputs: The device provides two analog outputs, which can be used to drive headphones or line-level outputs. The output stage is designed to deliver high-quality audio with low distortion and noise.

5. Microphone Input: The PCM2904DBR includes a microphone input, allowing for direct connection of microphones for recording purposes. This feature is particularly useful for applications such as voice-over work or podcasting.

6. Power Management: The device operates with a low supply voltage, typically around 5V, and includes power management features that help to reduce power consumption, making it suitable for battery-operated devices.

7. Package and Pin Configuration: The PCM2904DBR is housed in a compact 28-pin TSSOP (Thin Shrink Small Outline Package), which facilitates easy integration into various circuit designs. The pin configuration allows for straightforward connections to other components in an audio system.

8. Applications: This codec is ideal for a wide range of applications, including USB audio interfaces, portable audio devices, computer sound cards, and other consumer electronics that require high-quality audio input and output.

Conclusion:

The PCM2904DBR from Texas Instruments is a versatile and efficient USB audio codec that combines high-performance audio processing with ease of integration. Its features make it a popular choice for developers looking to create high-quality audio solutions in a compact form factor. Whether for professional audio applications or consumer electronics, the PCM2904DBR delivers reliable performance and excellent sound quality.