Texas Instruments

PCM2702E

PCM2702E Description

The PCM2702E from Texas Instruments is a high-performance 16-bit stereo audio DAC with an integrated USB interface, designed for seamless digital-to-analog conversion in audio applications. Operating within a 3V to 3.6V or 5V supply range, this IC supports a 48 kHz sampling rate, ensuring high-fidelity audio output. Its surface-mount 28-SSOP package makes it suitable for compact designs, while its RoHS3 compliance and REACH-unaffected status align with modern environmental standards. Although marked as obsolete, the PCM2702E remains a reliable choice for legacy systems requiring USB audio interfacing with minimal external components.

PCM2702E Features

• USB Audio Interface: Integrated USB 1.1 controller eliminates the need for external USB PHY, simplifying design.
• 16-Bit Resolution: Delivers CD-quality audio with low distortion and high dynamic range.
• Dual Supply Compatibility: Supports 3V–3.6V (analog) and 5V (digital) for flexible power management.
• Low Power Consumption: Optimized for energy-efficient operation in portable and embedded systems.
• Surface-Mount Design: 28-SSOP package ensures space-saving PCB integration.
• Plug-and-Play Compliance: USB Audio Class 1.0 support enables driverless operation on most OS platforms.

PCM2702E Applications

• USB Audio Adapters: Ideal for PC sound cards, USB headsets, and external DACs due to its native USB interface.
• Embedded Audio Systems: Suitable for kiosks, gaming consoles, and automotive infotainment where USB audio streaming is required.
• Legacy Audio Upgrades: Enables USB connectivity for older audio equipment like amplifiers or mixers.
• Portable Devices: Low power and compact form factor make it viable for battery-powered audio peripherals.

Conclusion of PCM2702E

The PCM2702E stands out for its integrated USB audio solution, combining simplicity, performance, and cost-effectiveness. While newer alternatives exist, its 16-bit resolution, plug-and-play compatibility, and dual-voltage operation make it a pragmatic choice for USB audio interfacing in legacy or space-constrained designs. Engineers seeking a no-fuss DAC with proven reliability may still find value in this IC for specific applications.