Datasheet - Wcd9341

When routing the WCD9341 on a multi-layer PCB, engineers must isolate the analog audio paths from high-speed digital lines (such as UFS storage or cellular RF traces) to prevent electromagnetic interference (EMI) hum. PCB Layout Guidelines:

Left and right headphone outputs featuring integrated ground-loop noise rejection.

and other Snapdragon 835-powered devices like the HTC 10 and Xiaomi Mi Note 2. Hi-Fi Audio Systems wcd9341 datasheet

While it is most renowned for its role in flagship smartphones (such as those in the Xiaomi, LG, and OnePlus lineups), the WCD9341's versatility makes it a key component in a wide range of consumer electronics:

: S8, S8 Plus, S10, S10 Plus, Note 8, and Note 9. When routing the WCD9341 on a multi-layer PCB,

The WCD9341 acts as a centralized bridge between digital processors and analog audio peripherals (microphones, speakers, and headphones). It integrates high-performance Digital-to-Analog Converters (DACs), Analog-to-Digital Converters (ADCs), and hardware-accelerated Digital Signal Processing (DSP) blocks onto a single silicon die. Key Performance Specifications

: Features high-fidelity ADCs (Analog-to-Digital Converters) that enable high-quality binaural audio capture for immersive recordings. Hi-Fi Audio Systems While it is most renowned

The WCD9341 is a highly integrated, low-power audio codec designed by Qualcomm. It primarily serves as the dedicated audio hub for flagship mobile platforms, including the Snapdragon 835 and 845 processors. Commonly marketed under the Qualcomm Aqstic™ brand, this hardware delivers audiophile-grade sound reproduction, advanced voice processing, and high-efficiency power management for smartphones and embedded multimedia systems.

The WCD9341 consists of the following functional blocks: