Four DAC channels and four ground-referenced class W output drivers provide interfaces to a headset connector, earpiece or line output. Ground loop feedback is employed to reduce common mode noise on these outputs.

An advanced micro-power accessory interface provides plug-in / removal and hookswitch button press detection with support for up to seven buttons in parallel with the headset microphone. Load impedance sensing circuits provide support for a wide range of 3.5mm accessory types, including AV connectors.

The digital core is highly optimised to produce very high quality sidetones with low latency filters supporting both wideband and narrowband voice sample rates. Programmable filtering, equalisation and dynamic range control are also available in the record and playback paths. Flexible DAC mixing options are provided to all outputs.

The device integrates PDM interfaces for digital microphones and digital speaker amplifiers.

A MICBIAS with a dedicated LDO provides exceptionally high PSRR and low noise microphone amplifiers provide up to 30dB of gain in the ADC path.

The WM8996 is supplied in a 3.24 x 3.56 x 0.7mm W-CSP package, ideal for portable systems.