92HD99B3X5NDGIWCX

Overview

The 92HD99B3X5NDGIWCX is a single-chip PC audio system codec manufactured by Tempo Semiconductor. It integrates four channels of audio processing, comprising two stereo DACs and two stereo ADCs with 24-bit resolution. The device includes a 2W Class-D stereo BTL speaker amplifier for 4-ohm loads at 5V, a capless headphone amplifier utilizing a charge pump/LDO, and an internal digital core LDO voltage regulator. It supports full-duplex stereo audio, simultaneous VoIP, and features a 10-band hardware parametric equalizer alongside a hardware compressor limiter. The component operates within a supply voltage range of 1.418 V to 1.583 V and functions between -40°C and +85°C.

Feature Summary

• Integrates a 2W Class-D stereo BTL speaker amplifier and a capless headphone amplifier with charge pump/LDO.
• Supports full HDA015-B low power management with rapid D3 to D0 transitions.
• Includes dedicated hardware signal processing such as a 10-band parametric equalizer and compressor limiter.
• Features combo jack support enabling dual-function headphone and headset detection.

Applications

• Notebook computer audio systems
• Business desktop PC audio platforms

Procurement Notes

Verify the current lifecycle status before design implementation, as this specific part number may be discontinued or subject to end-of-life notifications. Confirm that the QFN-40 package dimensions and pinout align with the target PCB layout. Ensure the design accommodates the required thermal dissipation for the integrated Class-D amplifier and capless headphone driver under maximum load conditions.

Selection Notes

Select this component when a highly integrated solution minimizing PCB footprint and bill of materials is required. It is suitable for designs needing both high-fidelity playback and capture on a single chip without external amplifiers. Verify compatibility with the intended operating voltage range and ensure the application benefits from the built-in hardware DSP features rather than relying solely on software processing.

Part Context

This component belongs to the 92HD99 series of single-chip audio systems designed for PC applications. It consolidates codec, amplifier, and regulator functions into one package. The series focuses on reducing system complexity and cost while maintaining HD Audio compliance for consumer and business computing devices.

Replacement Considerations

Check for official replacement part numbers from Tempo Semiconductor if this unit is discontinued. Evaluate alternative codecs in the same family that maintain similar pinouts and feature sets to ensure a direct drop-in replacement capability without major schematic modifications.

FAQ

Does the 92HD99 support digital microphone inputs?

Yes, the device supports digital microphone inputs configured for either mono or stereo operation.

What is the maximum output power of the integrated speaker amplifier?

The integrated Class-D stereo BTL speaker amplifier delivers 2W into a 4-ohm load at 5V.

Is combo jack detection supported?

Yes, the codec supports combo jacks allowing for dual-function headphone and headset detection.