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The PCM2704DBR is a USB digital-to-analog converter (DAC) manufactured by Texas Instruments (TI). Below are its specifications, descriptions, and features:

Specifications:

• Interface: USB 1.1 Full-Speed (12 Mbps)
• Resolution: 16-bit
• Sampling Rate: 32 kHz, 44.1 kHz, 48 kHz
• THD+N (Total Harmonic Distortion + Noise): 0.006% (typical)
• Dynamic Range: 100 dB (typical)
• Output: Stereo Line-Level (2 Vrms)
• Power Supply: 3.3 V (USB bus-powered)
• Operating Temperature Range: -40°C to +85°C
• Package: SSOP-28

Descriptions:

The PCM2704DBR is a USB-compliant stereo DAC with an integrated USB transceiver and digital-to-analog converter. It supports plug-and-play functionality without requiring external drivers on Windows, macOS, and Linux. The device converts digital audio data from a USB host into analog signals for headphones or line-level outputs.

Features:

• Integrated USB Interface: No external USB controller required.
• Self-Powered Operation: Draws power directly from the USB bus.
• On-Chip Clock Generator: Eliminates the need for an external crystal.
• Low Power Consumption: Suitable for portable applications.
• Supports USB Audio Class 1.0: Ensures compatibility with standard operating systems.
• Integrated Headphone Amplifier: Optional for direct headphone output.
• Software Mute and Volume Control: Adjustable via USB commands.

This information is strictly factual and based on the manufacturer's datasheet.