PCM54KP

ADCs/DACs - Special Purpose Overview

The PCM54KP is a 16-bit monolithic digital-to-analog converter designed for digital audio applications. It features parallel input, ultra-stable nichrome thin-film resistors, and an internal zener voltage reference. The device operates on dual supplies ranging from ±5V to ±12V, providing a bipolar voltage output of ±3V or a current output of ±1mA. Key electrical specifications include a dynamic range of 96dB, a typical total harmonic distortion of -92dB at full scale, and a settling time of 3μs for a 6V step. It is housed in a 28-pin plastic DIP package.

ADCs/DACs - Special Purpose Feature Summary

• 16-bit resolution with 15-bit monotonicity
• -92dB Total Harmonic Distortion (K Grade)
• Internal stable low-noise zener voltage reference
• Bipolar voltage output (±3V) or current output (±1mA)

ADCs/DACs - Special Purpose Applications

• Digital audio systems
• High-fidelity audio equipment

ADCs/DACs - Special Purpose Procurement Notes

Verify the component status as the datasheet indicates 'ACTIVE' status for new designs, while distributor records may show 'Obsolete'. Confirm the specific K grade performance characteristics against application requirements. Ensure power supply decoupling capacitors are placed close to the converter pins for optimal noise rejection.

ADCs/DACs - Special Purpose Selection Notes

Select the PCM54KP when a high-precision, parallel-input DAC is required for audio applications. It is suitable for designs needing a wide supply voltage range up to ±12V. Consider the optional MSB error adjustment circuit if minimizing differential linearity error at bipolar zero is critical for low-level signal accuracy.

ADCs/DACs - Special Purpose Part Context

The PCM54KP belongs to the PCM54/PCM55 family of converters manufactured by Burr-Brown, now part of Texas Instruments. The PCM54 variant specifically utilizes a 28-pin DIP package, whereas the PCM55 uses a 24-lead SOIC. The K suffix denotes a specific grade optimized for lower total harmonic distortion compared to HP or JP variants.

ADCs/DACs - Special Purpose Replacement Considerations

Direct pin-compatible replacements within the same family include the PCM54HP and PCM54JP. Note that these alternatives have different THD specifications (-82dB and -88dB respectively) and should be evaluated based on strict audio fidelity requirements.