PCM2706CPJT USB Audio Codec Overview
The PCM2706CPJT from Texas Instruments is a high-performance USB audio codec designed to convert digital audio signals from USB ports to high-fidelity analog output. This device integrates a USB controller and digital-to-analog converter (DAC) in a single chip, eliminating the need for external components and simplifying design for consumer audio devices. IC-fabrikant offers this versatile component as part of its portfolio of USB audio solutions for consumer and professional applications.
Technical Parameters of PCM2706CPJT
| Parameter | Waarde | Eenheid |
|---|---|---|
| Signaal-ruisverhouding (SNR) | 100 | dB (A-weighted) |
| Totale harmonische vervorming + ruis (THD+N) | 0.002 | % |
| Sample Rate Support | 8 to 48 | kHz |
| Bereik voedingsspanning | 4,5 tot 5,5 | V |
| Type verpakking | 28-TSSOP (Thin Shrink Small Outline Package) | |
Operationele kenmerken
| Kenmerk | Specificatie |
|---|---|
| Bedrijfstemperatuurbereik | 0??C to +70??C |
| USB Interface | USB 1.1 Full Speed (12Mbps) |
| Output Configuration | Stereo analog (left/right channels) |
| Power Consumption (Typical) | 150mW |
| Geïntegreerde functies | USB controller, DAC, headphone amplifier |
Advantages Over Alternative USB Audio Codecs
The PCM2706CPJT outperforms conventional USB audio codecs in key areas. Its integrated USB controller eliminates the need for external USB interface chips, reducing component count and PCB space?? a major advantage for compact devices like USB sound cards and portable DACs.
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Compared to basic USB audio converters with lower SNR, its 100dB performance delivers cleaner sound, capturing subtle audio details (e.g., reverb in music) that are lost in devices with higher noise floors. This makes it ideal for audiophile applications where sound quality is paramount.
Unlike codecs requiring complex driver installation, its plug-and-play functionality (compatible with standard USB audio drivers) simplifies integration for manufacturers, reducing development time. This is particularly valuable for consumer electronics, where ease of use and rapid time-to-market are critical.
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The 28-TSSOP package also offers space efficiency, fitting into slim devices like laptop docking stations and USB-C hubs where larger components won??t work. Combined with 150mW power consumption, it??s suitable for bus-powered devices (no external power supply needed), enhancing portability.
Typical Applications of PCM2706CPJT
The PCM2706CPJT excels in applications requiring USB audio conversion with minimal design complexity. Key use cases include:
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- USB digital-to-analog converters (DACs)
- External USB sound cards for computers
- Portable audio players with USB input
- Headphone amplifiers and gaming headsets
- Smart speakers and home audio systems
Texas Instruments?? Expertise in USB Audio
As a Texas Instruments product, the PCM2706CPJT leverages decades of experience in audio and USB semiconductor design. TI??s USB audio solutions are trusted by leading manufacturers for their reliability and ease of integration, with rigorous testing ensuring compatibility with major operating systems (Windows, macOS, Linux). This commitment to quality makes the PCM2706CPJT a staple in consumer audio devices where consistent performance is key.
Veelgestelde vragen (FAQ)
How does the PCM2706CPJT simplify USB audio design?
It integrates a USB controller, DAC, and headphone amplifier in one chip, eliminating the need for external components. This reduces PCB space, lowers costs, and simplifies design??critical for manufacturers of compact USB audio devices like portable DACs and sound cards.
Why is 100dB SNR important for USB audio converters?
SNR measures signal clarity relative to noise. 100dB ensures minimal background hiss, preserving subtle audio details (e.g., vocal nuances, instrumental harmonics) that define high-fidelity sound. This is especially noticeable in quiet music passages or when using high-sensitivity headphones.
What makes the PCM2706CPJT suitable for bus-powered devices?
With 150mW typical power consumption and USB 1.1 compliance, it draws sufficient power directly from the USB port, eliminating the need for an external power supply. This enhances portability, making it ideal for USB DACs and sound cards used with laptops or smartphones on the go.
Is the PCM2706CPJT compatible with modern operating systems?
Yes, it works with standard USB audio drivers, ensuring plug-and-play functionality on Windows, macOS, and Linux. This eliminates the need for custom driver development, simplifying integration for manufacturers and ensuring a seamless user experience across devices.
How does the integrated headphone amplifier benefit audio devices?
The built-in headphone amplifier drives headphones directly, eliminating the need for a separate amplifier chip. This reduces design complexity while ensuring optimal matching between the DAC output and headphone input, resulting in consistent sound quality across different headphone models.