PCM1754DBQ

ADCs/DACs - Special Purpose Overview

The PCM1754DBQ is a stereo audio digital-to-analog converter (DAC) from Texas Instruments, utilizing an enhanced delta-sigma architecture with fourth-order noise shaping and eighth-order amplitude quantization. It supports sampling rates up to 192 kHz and resolutions of 16 or 24 bits. The device features a signal-to-noise ratio (SNR) of 106 dB and a total harmonic distortion plus noise (THD+N) of 0.002%. It operates on a single power supply ranging from 4.5 V to 5.5 V, drawing approximately 30 mA. Packaged in a 16-pin SSOP, it includes two DAC outputs and connects via a serial interface.

ADCs/DACs - Special Purpose Feature Summary

• Enhanced Delta-Sigma Architecture: Uses fourth-order noise shaping and eighth-order amplitude quantization for high dynamic performance and jitter tolerance.
• High Fidelity Audio Performance: Delivers 106 dB SNR and 0.002% THD+N at 24-bit resolution.
• Flexible Control Interface: Supports hardware mode control or software programming via a three-wire serial interface with register write capabilities.
• Wide Sampling Rate Support: Compatible with standard audio data formats for 16-bit and 24-bit data up to 192 kHz.

ADCs/DACs - Special Purpose Applications

• Audio Digital Signal Processors (DSPs)
• Audio Decoder Chips
• High-Fidelity Stereo Audio Systems

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific suffix 'DBQ' corresponds to the SSOP-16 tube packaging variant when sourcing. Confirm RoHS compliance status through official manufacturer documentation, as environmental declarations may vary by production batch. Ensure the design accommodates the 4.5 V to 5.5 V single-supply requirement and the -25°C to +85°C operating temperature range.

ADCs/DACs - Special Purpose Selection Notes

Select the PCM1754DBQ for applications requiring hardware-controlled stereo DAC functionality without complex serial configuration overhead. Compare against PCM1753 and PCM1755 variants; note that PCM1754 is distinguished by its hardware control mode, whereas other family members may rely primarily on software control. Verify pin compatibility with legacy designs like PCM1748, accounting for differences in pin 5.

ADCs/DACs - Special Purpose Part Context

The PCM1754 belongs to the PCM175x family of stereo DACs from Texas Instruments. This series shares a common enhanced delta-sigma architecture but varies in control interfaces and pinout configurations. The PCM1754 specifically targets designs favoring hardware-based control mechanisms over full software programmability found in sibling models.

ADCs/DACs - Special Purpose Replacement Considerations

The PCM1754DBQRG4 is a reel-packaged alternative within the same family. Direct pin-compatible replacements include PCM1753 and PCM1755, though control logic differences must be addressed. Note that PCM1754 is not fully pin-compatible with PCM1748/PCM1742 due to pin 5 variations.