TAS5548DCAR

Audio Special Purpose Overview

The TAS5548DCAR is an eight-channel PWM audio processor manufactured by Texas Instruments, housed in a 56-PowerTFSOP package. It integrates dual asynchronous sample-rate converters (SRCs) to accept input sample rates from 32 kHz to 192 kHz and convert them to fixed rates of 96 kHz or 192 kHz. The device operates on a supply voltage ranging from 3 V to 3.6 V and supports I2C and I2S interfaces. Designed for digital audio interfacing, it enables seamless mixing of two audio sources within a single chip, eliminating the need for external coefficient management during sample rate transitions.

Audio Special Purpose Feature Summary

• Integrates dual asynchronous SRCs for converting variable input sample rates (32–192 kHz) to fixed 96 kHz or 192 kHz outputs without coefficient modification.
• Supports eight-channel PWM modulation with native 96 kHz processing for low out-of-band noise and jitter suppression.
• Features an integrated intelligent power manager that limits peak system power via host interrupts when thresholds are reached.

Audio Special Purpose Applications

• Blu-ray home-theater-in-a-box (HTiB) systems
• Audio/Video (A/V) receivers
• Mini/micro combo audio units
• Soundbars

Audio Special Purpose Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm packaging details. The DCAR suffix typically indicates Tape & Reel packaging, whereas other suffixes may denote Tube packaging. Confirm the exact quantity per reel and moisture sensitivity level requirements before finalizing procurement orders to ensure compliance with assembly standards.

Audio Special Purpose Selection Notes

Select this component for designs requiring simultaneous handling of multiple audio sources with different sample rates. The integrated ASRCs simplify digital multichannel product design by removing the need for external sample rate conversion hardware. Ensure the application environment stays within the specified 0°C to 85°C operating temperature range and utilizes the 3 V to 3.6 V supply voltage constraints.

Audio Special Purpose Part Context

The TAS5548 series represents Texas Instruments' first eight-channel PWM audio processor with integrated dual asynchronous SRCs. This integration allows designers to mix two audio sources seamlessly on a single chip, offering cost savings and design flexibility compared to solutions requiring separate chips for modulation and sample rate conversion.

Audio Special Purpose Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Verify compatibility with existing board layouts and software configurations if considering alternative TI audio processors.