Wcd9341 Datasheet May 2026

The chip integrates a low-power DSP (Digital Signal Processor). This allows for offloading audio tasks from the main CPU to save battery life. Common DSP functions include:

Despite being released in 2018, the WCD9341 remains relevant. The datasheet lists four primary use cases: wcd9341 datasheet

At its most basic level, the WCD9341 acts as a translator. The digital brain of a smartphone (the CPU/DSP) operates in binary (1s and 0s), while the real world operates in analog waves (sound). The WCD9341 bridges this gap: The chip integrates a low-power DSP (Digital Signal

From the datasheet’s functional block diagram: At its most basic level, the WCD9341 acts as a translator

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):