Wcd9341 Datasheet May 2026

While the full WCD9341 datasheet is under strict NDA, leaked reference designs and public FCC filings have revealed the core specifications. If you are designing a PCB, here are the critical numbers you must know.

Unlike Class-G or Class-AB, Class-H dynamically modulates the supply voltage to the output stage based on audio envelope, with feed-forward prediction (via audio DSP). Datasheet claims:

Implementation detail: Requires external 2.2 µF bootstrap capacitor on CP_OUT and 4.7 µF on VDD_CP. Missing these causes audible thumps. wcd9341 datasheet

Based on the official preliminary datasheet (Rev 1.4, 2016) and internal Qualcomm validation reports:

| Parameter | Value | Condition | |-----------|-------|------------| | DAC SNR (A-weighted) | 126 dB | 48 kHz, 0 dBFS, 3.3V supply | | DAC THD+N | -108 dB (0.0004%) | 1 kHz, 0 dBFS, 32Ω load | | Headphone Output Power | 2× 45 mW | 32Ω, 1% THD | | Headphone Output Level | 1.2 Vrms (max) | Class-H mode, 16Ω | | ADC SNR (MIC path) | 102 dB | 24-bit, 48 kHz, A-weighted | | ADC THD+N | -94 dB | 1 kHz, -3 dBFS | | Crosstalk | -110 dB @ 1 kHz | DAC to DAC, 32Ω | | Dynamic Range (DSD64) | 112 dB | DSD direct mode | | Sample rates | 8 kHz – 384 kHz | PCM; DSD64/128/256 | While the full WCD9341 datasheet is under strict

Comparison with earlier WCD9335:

Real-world measured performance (from LG V20/G6 using WCD9341 + ESS9218 combo): Implementation detail: Requires external 2

The WCD9341 is not just a simple converter; it is a comprehensive audio solution. The datasheet outlines several integrated subsystems that reduce the need for external components.