PCM2707PJTR

ADCs/DACs - Special Purpose Overview

The PCM2707PJTR is a stereo audio digital-to-analog converter (DAC) from Texas Instruments, packaged in a 32-pin TQFP. It integrates a USB full-speed protocol controller compliant with USB 1.1 specifications and an S/PDIF output interface. The device utilizes SpAct architecture to recover the audio clock directly from USB packet data, eliminating the need for dedicated software drivers or external clock sources. Key electrical parameters include a 16-bit resolution, support for sampling rates of 32, 44.1, and 48 kHz, and a typical dynamic range of 98 dB. It operates on a single supply voltage, supporting both bus-powered (5 V) and self-powered (3.3 V) configurations.

ADCs/DACs - Special Purpose Feature Summary

• Integrated USB 1.1 Full-Speed Protocol Controller requiring no dedicated device driver.
• On-chip Serial Programming Interface (SPI) for modifying USB descriptors without external ROM.
• Selectable I2S or S/PDIF digital output via the FSEL pin.
• SpAct technology for low-jitter audio playback by recovering the clock from USB data packets.

ADCs/DACs - Special Purpose Applications

• USB headphones playback
• USB audio speaker systems
• USB CRT/LCD monitors with audio capabilities
• USB audio interface boxes

ADCs/DACs - Special Purpose Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the presence of the 'PJTR' suffix indicates tape-and-reel packaging. Ensure compliance with RoHS directives as specified in the official datasheet. Check for end-of-life status or obsolescence notices prior to procurement planning.

ADCs/DACs - Special Purpose Selection Notes

Select the PCM2707PJTR when SPI-based descriptor modification is preferred over external ROM programming used in the PCM2706 variant. This model supports selectable I2S or S/PDIF outputs. Ensure the design accommodates the 32-pin TQFP package dimensions and thermal requirements for the intended operating temperature range of -25°C to +85°C.

ADCs/DACs - Special Purpose Part Context

The PCM2707PJTR belongs to the PCM2704/5/6/7 family of stereo audio DACs with integrated USB interfaces. While the PCM2704 and PCM2705 are noted as not recommended for new designs, the PCM2706 and PCM2707 remain active production data. The PJTR suffix specifically denotes the 32-pin TQFP package configuration with tape-and-reel shipping format.

ADCs/DACs - Special Purpose Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should evaluate the PCM2706PJT for hardware compatibility if external ROM programming is acceptable instead of SPI configuration.