92HD81B1C5NLGXRAX8

Overview

The Tempo Semiconductor 92HD81B1C5NLGXRAX8 is a single-chip PC audio system featuring a 4-channel HD Audio codec, integrated speaker amplifier, capless headphone amplifier, and low-dropout voltage regulator. It provides two stereo DACs and two stereo ADCs with 24-bit resolution. The device supports full-duplex stereo audio and simultaneous VoIP operations. It includes a 2W/channel stereo speaker amplifier capable of driving 4-ohm loads at 4.75V. Power management features include support for HDA015-B low power states, transitioning from D0 to D3 in under 10 milliseconds with less than -65dB pop/click during wake-up.

Feature Summary

• Integrates a high-fidelity 4-channel audio codec with dedicated speaker and headphone amplifiers
• Supports Microsoft WLP premium logo compliance and dual SPDIF output for HDMI and SPDIF
• Includes internal core voltage regulator and dedicated BTL high-pass filter for speaker protection
• Features digital microphone inputs and analog mixer with port presence detection

Applications

• Notebook computer audio systems
• Business desktop PC audio platforms
• Microsoft Windows Logo Program compliant audio designs

Procurement Notes

Verify the specific revision suffix (e.g., RA) against the datasheet to confirm hardware feature availability such as the dedicated BTL high-pass filter. Confirm that the ordering suffix matches the required package type and RoHS compliance status. Ensure compatibility with the intended digital power supply voltage options before finalizing procurement.

Selection Notes

Select this component when a compact PCB footprint and reduced bill of materials are required for PC audio applications. Choose this model if the design requires an integrated solution combining codec, speaker amp, and capless headphone driver. Verify that the target platform supports the necessary HDA signaling voltages and digital microphone configurations.

Part Context

This part belongs to the 92HD81 series of single-chip PC audio systems. It is designed to replace discrete audio solutions by integrating multiple functions into one package. The series targets both mobile and desktop computing environments requiring high-quality audio with low power consumption.

Replacement Considerations

Check for compatible revisions within the 92HD81 family. Verify pin-to-pin compatibility if substituting with other models in the same series.