Texas Instruments

PCM2906DBR

PCM2906DBR Description

The PCM2906DBR is a high-performance stereo audio codec with USB interface, designed by Texas Instruments. This integrated circuit (IC) is part of the PCM290 series and is housed in a 28-lead SSOP package. It features a dynamic range of 89 dB for ADCs and 93 dB for DACs, ensuring high-quality audio performance. The PCM2906DBR supports a digital supply voltage range of 4.35V to 5.25V and an analog supply voltage range of 4.35V to 5.25V, making it suitable for a variety of power supply conditions. It employs a sigma-delta modulation technique, which enhances its signal-to-noise ratio (SNR) to 89 dB for ADCs and 96 dB for DACs, providing superior audio clarity.

PCM2906DBR Features

• Stereo Audio Codec: The PCM2906DBR is designed for stereo audio applications, offering two ADCs and two DACs, each with a resolution of 16 bits.
• USB Interface: Equipped with a USB data interface, this codec simplifies connectivity and integration into modern audio systems.
• High Dynamic Range and SNR: With a dynamic range of 89 dB for ADCs and 93 dB for DACs, and an SNR of 89 dB for ADCs and 96 dB for DACs, the PCM2906DBR ensures high-fidelity audio reproduction.
• Sigma-Delta Modulation: This technique is employed to achieve high performance in both ADCs and DACs, resulting in reduced quantization noise and improved audio quality.
• Surface Mount Technology: The PCM2906DBR is available in a surface mount package, facilitating easy integration into compact and space-constrained designs.
• Compliance and Standards: The PCM2906DBR is REACH unaffected and RoHS3 compliant, ensuring it meets environmental and safety standards. It also carries an ECCN of EAR99 and an HTSUS code of 8542.39.0001.
• Moisture Sensitivity Level: With an MSL of 1 (Unlimited), the PCM2906DBR is suitable for various manufacturing environments without the need for special handling procedures.

PCM2906DBR Applications

The PCM2906DBR is ideal for a range of applications requiring high-quality stereo audio processing and USB connectivity. Some specific use cases include:

• Audio Interfaces: Ideal for computer audio interfaces, providing high-fidelity audio input and output capabilities.
• Portable Audio Devices: Suitable for portable audio players and recorders, enhancing the audio quality and ensuring reliable performance.
• Home Theater Systems: Can be integrated into home theater systems to deliver high-quality audio through USB connections.
• Professional Audio Equipment: Useful in professional audio setups where high dynamic range and SNR are critical for recording and playback.

Conclusion of PCM2906DBR

The PCM2906DBR from Texas Instruments stands out as a robust and versatile stereo audio codec with USB interface. Its high dynamic range, superior SNR, and sigma-delta modulation technique ensure high-fidelity audio performance. The surface mount package and compliance with environmental and safety standards make it suitable for a wide range of applications. Although the PCM2906DBR is now obsolete, its legacy continues to influence the design of modern audio codecs. For applications requiring high-quality stereo audio with USB connectivity, the PCM2906DBR remains a reliable choice.