[verified] - Wcd9341 Datasheet

Qualcomm Aqstic WCD9341 is a high-tier discrete audio codec designed to provide Hi-Fi audio experiences in flagship mobile devices, most notably integrated with the Snapdragon 835 Mobile Platform

. It is widely used in professional repair for smartphones like the Samsung Galaxy S8, Note 8, and Note 9

to resolve issues such as distorted sound, dead speakers, or muffled microphones. Key Technical Specifications

is engineered for audiophile-grade performance with the following core capabilities: Audio Quality : Supports up to 384-kHz/32-bit PCM audio playback. DSD Support : Features native Direct Stream Digital (DSD64/DSD128)

decoding, eliminating the need for signal conversion to PCM. Dynamic Range : Offers a high dynamic range of for pure, premium sound. Active Noise Cancellation (ANC) wcd9341 datasheet

: Includes a dedicated hardware block to process ANC algorithms, allowing for battery-free ANC headsets that draw power directly from the phone. Form Factor 154-pin SMD IC

designed for high-precision BGA soldering on mobile motherboards. Common Applications and Compatibility While primarily known for its debut in the Samsung Galaxy S8

, it is a standard component for repairing several high-end models: Samsung Series

: Galaxy S8 / S8 Plus, S10 series, Note 8, Note 9, and Note 10 series. Other Devices : Integrated into devices like the Xiaomi Mi Note 2 to achieve their highly-rated audio quality. Repair and Replacement Parts Qualcomm Aqstic WCD9341 is a high-tier discrete audio

If you are looking for replacement chips for sound fault repairs, they are available from various specialized retailers: WCD 9341 Audio IC For Sound Fault Repair : Available at for approximately ₹99.00 WCD9341 IC : Offered by Akinfo Tools at ₹53.00 Replacement Audio Codec IC for Samsung Galaxy S8/Note 8 : Listed at Macfactory for ₹299.00 to ₹349.00 depending on the specific batch. Note for Technicians:

This is a deep technical review of the Qualcomm WCD9341, based on its public-facing datasheet and supplementary audio codec architecture documents. The WCD9341 is a high-performance audio codec IC typically paired with Snapdragon 820, 821, 835, and 660/630-series mobile platforms.

Disclaimer: The full NDA-protected datasheet (e.g., 80-NL713-XX) contains register maps and timing diagrams not publicly available. This review synthesizes information from authorized summary datasheets, developer blogs, and reverse-engineering community insights as of 2026.

Critical external components:

4. Multi-Channel Input/Output

2. Hardware Architecture & Block Diagram

From the datasheet’s functional block diagram: Critical external components:

Analog Inputs ──┬── ADC0 (Main Mic)
                ├── ADC1 (Secondary Mic)  
                ├── ADC2 (ANC/Reference)
                └── ADC3 (Line-in/Headset detect)

                 ↓
             Digital Decimation Filters
                 ↓
          ┌─────────────────────────┐
          │  Audio DSP (Qualcomm Hexagon, 240 MHz) │
          │  - FIR/IIR filters      │
          │  - Dynamic Range Control │
          │  - Sample rate converter │
          └─────────────────────────┘
                 ↓
          ┌─────────────────────────┐
          │   Hi-Fi DAC (32-bit, 384 kHz)  │
          │   - DSD direct path     │
          │   - 4th-order noise shaping   │
          └─────────────────────────┘
                 ↓
          Class-H Headphone Amp (L+R)
                 ↓
          HP_L, HP_R output pins

Notable external pins (per datasheet):