TAS5414TDKDRMQ1

Overview

The Texas Instruments TAS5414TDKDRMQ1 is a four-channel automotive digital Class-D audio amplifier housed in a 36-pin PSOP3 (DKD) Power SOP package with an exposed heat slug. It features single-ended analog inputs and delivers up to 28 W per channel into 4 Ω at 14.4 Vdc, or 45 W per channel into 2 Ω at 14.4 Vdc. The device operates within an 8 V to 22 V supply range and supports ambient temperatures from -40 °C to 105 °C. Key electrical characteristics include a typical THD+N of less than 0.02% at 1 W into 4 Ω and a power supply rejection ratio of 75 dB.

Feature Summary

• Patented pop-and-click reduction technology utilizing gain ramp control for mute and standby transitions.
• Integrated load diagnostic functions capable of detecting output open circuits, shorts to power, and shorts to ground.
• Configurable channel gains selectable via I²C interface, including 12-dB, 20-dB, 26-dB, and 32-dB settings.
• Built-in protection mechanisms including short-circuit protection, overtemperature shutdown, and load-dump tolerance up to 50 V.

Applications

• High-power OEM automotive head units
• Retail automotive audio head units
• External PBTL amplifier modules

Procurement Notes

Verify the specific suffix 'MQ1' against the official datasheet to confirm it denotes the qualified automotive grade variant. Ensure the DKD package type matches the required PCB footprint. Confirm that the single-ended input configuration aligns with the system design, as the differential TAS5424 is the alternative option.

Selection Notes

Select this component when a four-channel solution with single-ended inputs is required for automotive environments. The device offers high efficiency compared to linear amplifiers, reducing thermal management complexity. Consider the TAS5424 if differential inputs are preferred for improved common-mode noise immunity. Verify that the external heat sinking strategy accommodates the junction-to-case thermal resistance specifications.

Part Context

This part belongs to the TAS5414/TAS5424 family of four-channel automotive digital amplifiers. The TAS5414 variant specifically utilizes single-ended analog inputs, whereas the TAS5424 employs differential inputs. Both share the same core Class-D architecture, protection features, and packaging options, differing primarily in their signal input topology.

Replacement Considerations

The TAS5424TDKDRMQ1 serves as a direct functional substitute if differential inputs are acceptable. Other TAS5414 variants with different suffixes may offer minor pinout or thermal differences; verify datasheet compatibility before substitution.