Wcd9341 Datasheet Jun 2026

Supports up to six DMIC channels, utilizing Pulse Density Modulation (PDM) lines.

The chip embeds a dedicated, high-efficiency headphone amplifier capable of driving a broad range of impedances—from low-impedance in-ear monitors (IEMs) to high-impedance over-ear studio headphones. It incorporates real-time Dynamic Range Enhancement (DRE) to suppress noise floors during quiet musical passages. 3. Advanced Voice UI and Hardware DSP

To achieve its 130 dB dynamic range, the WCD9341 segregates its power rails to prevent digital switching noise from bleeding into the sensitive analog domain: Clean analog supply voltage (typically 1.8V).

Implementing the WCD9341 requires careful attention to trace routing, decoupling capacitor placement, and thermal management to achieve the rated 130 dB dynamic range. Hardware Design Considerations

It utilizes split analog ground (AGND) and digital ground (DGND) planes connected at a single star-ground point to prevent digital switching noise from bleeding into the sensitive analog audio pathways. wcd9341 datasheet

The WCD9341 001 IC acts as the primary audio engine, responsible for managing all audio input and output paths in advanced smartphones. It is known for high-definition (HD) audio playback, supporting high-resolution audio formats and offering low-power consumption, which is critical for mobile devices.

WCD-9341-0-154WLPSP (154-pin Wafer-Level Chip-Scale Package) Up to 384 kHz / 32-bit audio playback DSD Support Native DSD64 and DSD128 playback compatibility Dynamic Range (DNR) Up to 123 dB (Playback path) Total Harmonic Distortion + Noise -105 dB (THD+N) typical for headphone output paths Voice UI Support 6-mic source tracking, Far-field voice activation, ECNS Host Interface SoundWire, SLIMbus, and I2S/PCM protocols Key Architectural Features 1. Premium DAC and Native High-Resolution Playback

decoupling capacitors as close to the VDD pins as physically possible. Long PCB traces introduce trace inductance that degrades audio performance.

The codec relies on an external system clock (MCLK) or internal PLL. The driver sets the registers to lock frequencies before audio streaming starts. Supports up to six DMIC channels, utilizing Pulse

Converts digital data into rich analog sound for headphones and captures analog voice/audio into digital data for storage.

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The WCD9341 supports multiple microphone inputs (typically up to 5 analog or 6 digital microphones). This is essential for modern smartphone features like:

I can provide specific driver configuration snippets or targeted layout advice based on your design requirements. Share public link Qualcomm WCD9341 is a high-performance

: Integrated hardware support for high-performance active noise cancellation in headphones and headsets.

The WCD9341 datasheet provides a detailed breakdown of the chip's specifications, including:

Designing with the WCD9341 requires strict adherence to its electrical boundaries to prevent thermal runaway or audio distortion. -40°C to +85°C.