92HD66B2X3NDGXZBX

Overview

The 92HD66B2X3NDGXZBX is a four-channel High Definition Audio codec from Tempo Semiconductor, designed for notebook and desktop PC applications. It features stereo 24-bit resolution with full duplex operation supporting sample rates up to 192 kHz via the DAC and ADC. The device includes two independent SPDIF output interfaces and one SPDIF input interface. It operates with a 3.3V digital supply and a 3.3V analog power supply (AVDD). The component supports 3.3V HDA signaling levels and is available in a 40-pin QFN package.

Feature Summary

• Dual capless headphone amplifiers integrated for efficient audio output
• Full support for Intel HD Audio Interface and EuP low power standards
• Two independent SPDIF outputs enabling simultaneous HDMI and SPDIF transmission
• Support for digital microphone inputs and port presence detection capabilities

Applications

• Notebook computer audio systems
• Desktop PC audio architectures
• Home entertainment system integration

Procurement Notes

Verify the specific silicon stepping revision by contacting the manufacturer, as indicated by the 'yy' suffix in the ordering nomenclature. Confirm that the design utilizes a 3.3V analog supply voltage, as this variant is optimized for AVDD at 3.3V rather than 5V. Ensure the PCB layout accommodates the 40-pin QFN package dimensions and thermal requirements specified in the datasheet.

Selection Notes

Select this model when a 40-pin form factor is required alongside 3.3V analog supply constraints. This part provides 3.3V HDA signaling specifically, unlike the switchable signaling options found in the 48-pin variants. It is suitable for designs requiring dual capless headphone drivers and multiple SPDIF outputs within a compact footprint.

Part Context

This component belongs to the 92HD66B series of four-channel HD audio codecs. It shares core functionality with other members of the family but differs in package size and electrical characteristics. Specifically, it uses a 40-pin QFN package instead of the 48-pin option and is configured for 3.3V HDA signaling with a 3.3V analog supply.

Replacement Considerations

The 92HD66B2X5NDGXZBX serves as a direct alternative if the system design requires a 5V analog supply (AVDD) while maintaining the same 40-pin package and 3.3V HDA signaling configuration.