Wcd9341 — Datasheet [portable]

Mic Input → PGA (Programmable Gain Amp) → A/D Converter (Σ-Δ) → Decimation Filter → I2S Output

Replacing the requires expert BGA micro-soldering and hot-air rework skills.

Direct Stream Digital (DSD) playback capabilities (DSD64/DSD128), bypassing standard PCM conversion to eliminate quantization noise. wcd9341 datasheet

The chip also includes a dedicated for audio post-processing (equalization, volume ramping, and mixing), which is controlled via I2C registers.

Open-source wcd934x driver files contain complete register definitions and power-sequencing steps. Mic Input → PGA (Programmable Gain Amp) →

The internal LDOs require a minimum load current of 10 mA to maintain regulation. Floating the output is not allowed.

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Typically comes in a 154-pin WLPSP (Wafer Level Chip Scale Package) . Common Use Cases & Repair