Renesas 92HD99B2X5NDGIWCX

Overview

92HD99B2X5NDGIWCX from Integrated Device Technology (IDT) is a single-chip PC audio system integrating a 4-channel HD Audio codec, stereo Class-D speaker amplifier (2W @ 4Ω), capless headphone driver with charge pump/LDO, and internal digital core LDO regulator. It delivers high-fidelity audio for notebook and business desktop PCs with full HDA015-B low-power compliance and combo jack support.

For engineers reviewing the 92HD99B2X5NDGIWCX datasheet, 92HD99B2X5NDGIWCX pinout, 92HD99B2X5NDGIWCX application, or 92HD99B2X5NDGIWCX equivalent, key selection criteria include its integrated BTL speaker amp output power, capless HP architecture eliminating external DC-blocking capacitors, hardware 10-band parametric EQ, D3-to-D0 resume latency (<10 ms), and dual digital microphone input support.

Technical Context

The 92HD99B2X5NDGIWCX implements a complete High Definition Audio (HDA) controller with AFG (Audio Function Group) architecture compliant with Intel's HDA015-B specification. It supports simultaneous full-duplex stereo playback/capture plus VoIP streaming via dedicated ADC/DAC paths and dynamic stream switching.

Power management includes hardware-controlled D0–D3 state transitions with port presence detection in D3, PC beep wake-up capability, and vendor-specific ultra-low-power modes. The analog front-end integrates a high-performance mixer, adjustable VREF outputs for mic bias, and dedicated BTL high-pass filtering for speaker protection.

Key Specifications

Pinout & Package

92HD99B2X5NDGIWCX is housed in a 40-pad QFN RoHS-compliant package (7mm × 7mm × 0.8mm height) rated for commercial and industrial temperature ranges (0°C to +70°C / –40°C to +85°C).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar audio codec + amplifier applications.

Compared with ALC269VC-GR and RT5640, the 92HD99B2X5NDGIWCX uniquely combines HDA015-B–compliant low-power operation, integrated 2W BTL speaker drive, capless headphone output, and hardware 10-band EQ - making it optimal for Windows-certified notebook and desktop audio systems requiring minimal external components.

Availability

92HD99B2X5NDGIWCX is available at Aetrix Electronics and suitable for notebook audio subsystems, business desktop platforms, and mobile workstation designs requiring stable component supply, long-term lifecycle support, and Windows logo compliance.

Supply support for 92HD99B2X5NDGIWCX includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Integrated Device Technology (IDT) was a fabless semiconductor company specializing in timing, memory interface, RF, and audio solutions before its acquisition by Renesas Electronics in 2019. IDT delivered high-performance mixed-signal ICs for computing and communications infrastructure.

The 92HD99 series belongs to IDT's PC Audio Solutions product line, designed specifically to consolidate HD Audio codec, speaker amplification, headphone drive, and power regulation into a single chip for space-constrained Windows-based client devices.

FAQ

What is the primary function of the 92HD99B2X5NDGIWCX in a PC audio system?

The 92HD99B2X5NDGIWCX serves as a fully integrated PC audio system-on-chip, combining a 4-channel HD Audio codec, stereo Class-D speaker amplifier (2W @ 4Ω), capless headphone driver, and internal digital core LDO. It replaces multiple discrete audio components in notebook and business desktop designs while maintaining full HDA015-B compliance and Windows logo requirements.

Does the 92HD99B2X5NDGIWCX support digital microphones?

Yes, the 92HD99B2X5NDGIWCX supports both mono and stereo digital microphones via dedicated PDM clock and data pins. This capability is confirmed in the datasheet's Section 2.13 and Table 3.5.2, enabling low-noise, simplified routing compared to analog mic interfaces - a key feature of the 92HD99B2X5NDGIWCX.

What is the significance of "capless headphone amplifier" in the 92HD99B2X5NDGIWCX?

The capless headphone amplifier in the 92HD99B2X5NDGIWCX uses an integrated charge pump and LDO to generate a bipolar supply, allowing DC-coupled output. This eliminates the need for large external DC-blocking electrolytic capacitors - reducing PCB area, cost, and potential failure points. That architecture is a defining characteristic of the 92HD99B2X5NDGIWCX.

How does the 92HD99B2X5NDGIWCX manage power states during system sleep?

The 92HD99B2X5NDGIWCX implements full HDA015-B low-power support: it transitions from D0 to D3 on audio inactivity, resumes to D0 in under 10 ms upon activity, suppresses pop/click to <–65dB, and maintains port presence detection in D3. These behaviors are explicitly specified in the datasheet's Section 2.22 and define the 92HD99B2X5NDGIWCX's power efficiency.

Is the 92HD99B2X5NDGIWCX pin-compatible with other members of the 92HD99 family?

Yes, the 92HD99B2X5NDGIWCX shares the same 40-pin QFN package and pinout as other 92HD99 variants (e.g., 92HD99B1X5NDGI, 92HD99B3X5NDGI), as confirmed in Section 6 of the datasheet. All members use identical mechanical and electrical pin mapping - ensuring layout reuse across firmware-tuned variants of the 92HD99B2X5NDGIWCX.