WM8998ECS/R

Overview

The WM8998ECS/R is a high-performance audio hub CODEC designed for smartphones and tablets. It features a fully flexible digital audio mixing and routing engine with fixed-function signal processing blocks, including filters, EQ, dynamics processors, and sample rate converters. The device integrates three ADCs with 96dB SNR and seven DACs with 122dB SNR at 48kHz. It supports SLIMbus and three additional digital audio interfaces, accommodating standard sample rates from 8kHz to 192kHz. Power consumption is optimized for battery life, operating on a single 1.8V supply with Class-D drivers typically connected to a 4.2V battery.

Feature Summary

• Integrated digital audio core featuring flexible signal routing, programmable filters, dynamic range control, and parametric equalization.
• Multi-channel asynchronous sample rate conversion supporting concurrent operation of multiple sample rates via the SLIMbus interface.
• Comprehensive output drivers including stereo headphone, line out, mono earpiece, and stereo Class-D speaker outputs with haptic support.
• Advanced accessory detection functions with impedance sensing, microphone activity detection, and low-power sleep modes.

Applications

• Smartphones and multimedia handsets
• Tablets and mobile internet devices (MID)

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for recent process change notifications or end-of-life notices prior to finalizing procurement plans. Ensure ordering suffixes match specific package and tape-and-reel requirements.

Selection Notes

Select this component when a highly integrated audio hub is required for portable multimedia devices. It is suitable for designs where audio processing is handled by the host application processor. Consider its low power architecture and extensive digital signal processing capabilities for optimizing battery life in voice, music, and standby modes.

Part Context

The WM8998 belongs to Cirrus Logic's portfolio of high-performance audio CODECs. It is specifically engineered for mobile applications requiring extensive audio flexibility and low power consumption. The device combines hi-fi audio capabilities with a robust digital core, making it a central component in modern smartphone and tablet audio subsystems.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation. Consult official manufacturer resources for potential legacy replacements or updated series components.

FAQ

What is the maximum supported sample rate for the digital audio interfaces?

The WM8998 supports standard audio sample rates ranging from 8kHz up to 192kHz across its three full digital audio interfaces.

How does the WM8998 handle voice call handover between wideband and narrowband modes?

It features automatic sample rate detection which enables seamless wideband/narrowband voice call handover without manual intervention.

Can the WM8998 drive external haptics vibe actuators directly?

Yes, the stereo Class-D speaker outputs can directly drive external haptics vibe actuators, or they can be driven via an external driver on the PDM output interface.