PCM2704CDB

ADCs/DACs - Special Purpose Overview

The PCM2704CDB is a stereo audio digital-to-analog converter (DAC) manufactured by Texas Instruments. It features a 16-bit resolution and supports sampling rates up to 48 kHz. The device integrates a USB 2.0 interface for digital data reception, eliminating the need for external clocking circuitry. It operates on dual power supplies of 3.3 V and 5 V. Key electrical specifications include a signal-to-noise ratio (SNR) of 98 dB and a total harmonic distortion plus noise (THD+N) of 0.006%. The unit consumes approximately 30 mA of operating current and delivers an output voltage of 550 mV. It is housed in a 28-pin SSOP package.

ADCs/DACs - Special Purpose Feature Summary

• Integrated USB 2.0 interface for direct digital audio input
• 16-bit resolution with 48 kHz maximum sampling rate
• High audio performance: 98 dB SNR and 0.006% THD+N
• Dual supply operation supporting 3.3 V and 5 V logic levels

ADCs/DACs - Special Purpose Applications

• USB audio peripherals such as sound cards and external DACs
• Portable audio players requiring low component count
• Computer peripheral audio interfaces

ADCs/DACs - Special Purpose Selection Notes

Select this component for designs requiring a complete stereo DAC solution with native USB connectivity. Verify that the system architecture supports the required 3.3 V and 5 V dual power rails. Ensure the application does not exceed the 48 kHz sampling rate limit or require higher than 16-bit resolution.

ADCs/DACs - Special Purpose Part Context

This part belongs to the PCM2704C series of audio DACs from Texas Instruments. It is designed specifically for USB audio applications, combining the DAC and USB controller functions into a single integrated circuit to simplify board layout and reduce bill of materials compared to discrete solutions.