PCM5142PW

ADCs/DACs - Special Purpose Overview

The PCM5142PW is a stereo audio digital-to-analog converter (DAC) from Texas Instruments, housed in a 28-pin TSSOP package. It features DirectPath technology, eliminating the need for external output coupling capacitors. The device supports high-resolution audio with up to 32-bit resolution and sampling rates reaching 384 kHz. Key electrical specifications include a signal-to-noise ratio (SNR) of 112 dB and a dynamic range of 112 dB. It operates on a single 3.3 V power supply and includes integrated headphone amplifiers capable of delivering 15 mW per channel.

ADCs/DACs - Special Purpose Feature Summary

• DirectPath analog output architecture removes the requirement for external DC-blocking capacitors.
• Supports I2C and SPI control interfaces for flexible system integration.
• Integrated dual headphone amplifiers providing 15 mW per channel output power.
• High-fidelity performance with 112 dB SNR and -94 dB THD+N.

ADCs/DACs - Special Purpose Applications

• Portable audio players and media devices requiring compact DAC solutions.
• Smart home audio systems and internet radios.
• Industrial audio equipment and professional sound cards.
• Automotive infotainment systems.

ADCs/DACs - Special Purpose Procurement Notes

Verify the package type matches the design requirements, as the PW suffix denotes a TSSOP-28 surface-mount package. Confirm that the I2C/SPI control interface aligns with the host microcontroller's available peripherals. Ensure the 3.3 V power supply voltage is stable within the specified operating range to maintain optimal audio performance and prevent damage to the internal circuitry.

ADCs/DACs - Special Purpose Selection Notes

Select the PCM5142PW when both high audio fidelity and integrated headphone driving capability are required in a small form factor. Compare against the PCM5102A if headphone amplifiers are unnecessary to reduce cost and complexity. Consider the PCM5142PWR variant if reel packaging is preferred for automated assembly processes over the tube-packaged PW version.

ADCs/DACs - Special Purpose Part Context

The PCM5142 belongs to the PCM51xx series of high-performance audio DACs from Texas Instruments. This series is designed for applications demanding low power consumption and high signal integrity. The PCM5142 specifically distinguishes itself by including built-in headphone amplifiers, whereas other members like the PCM5102A focus purely on line-level outputs without integrated drivers.

ADCs/DACs - Special Purpose Replacement Considerations

The PCM5142PWR is a pin-compatible alternative offering the same functionality in a tape-and-reel package suitable for high-volume manufacturing. For designs not requiring headphone amplifiers, the PCM5102A serves as a lower-cost substitute with similar audio specifications but fewer output stages.