Wcd9341 Datasheet

The WCD9341 is engineered to meet the rigorous demands of professional audio enthusiasts by supporting both ultra-high resolution PCM and native DSD playback. Specification Up to 384-kHz / 32-bit DSD Support Native DSD64 and DSD128 Playback SNR 122 dB (High-fidelity HPH playback) THD + N (Playback) -108 dB Dynamic Range 117 dB (EAR port with DRE) Recording Support Up to 192-kHz / 24-bit Pin Count 154 Pins Core Capabilities & Features

This chip is renowned for its , ultra-low distortion, and high signal-to-noise ratio (SNR). It was featured in many audiophile-grade smartphones such as the LG G6, LG V30, Xiaomi Mi 6, and Google Pixel 2 XL.

Qualcomm operates under a restricted documentation model. Complete datasheets, register maps, and software driver source codes for the WCD9341 are generally kept behind the Qualcomm CreatePoint portal. Original Equipment Manufacturers (OEMs) and authorized developers must sign a Non-Disclosure Agreement (NDA) to gain full access to the complete 500+ page technical reference manual.

Unlike Class-G or Class-AB, Class-H dynamically modulates the supply voltage to the output stage based on audio envelope, with (via audio DSP). Datasheet claims: wcd9341 datasheet

When working with the WCD9341, engineers have reported:

ADC input impedance: 20 kΩ typical – watch out with high-Z MEMS mics (require external buffer).

A MIPI-standard interface used for routing audio to digital microphones and smart amplifiers. I2S/PCM: Legacy ports for peripheral compatibility. 3. Pin Configuration and Package Details The WCD9341 is engineered to meet the rigorous

The is a premium-tier, high-fidelity (Hi-Fi) audio codec chip belonging to the Qualcomm Aqstic audio platform . Widely integrated alongside flagship processors like the Snapdragon 835, this 40nm integrated circuit (IC) powers the comprehensive voice processing and sound path control found in premier legacy flagships, such as the Samsung Galaxy Note 8 and Galaxy S9 .

Integrated low-power hardware voice trigger for "always-on" voice assistants (e.g., Google Assistant, Alexa).

If you are searching for the , you are likely an audio engineer, smartphone repair specialist, or an embedded systems developer looking to understand the specifications, pinouts, and capabilities of this powerful chip. This article serves as a deep-dive analysis of the WCD9341, covering its key features, electrical characteristics, architectural overview, and practical usage considerations—distilling the essence of what a formal datasheet provides. Qualcomm operates under a restricted documentation model

The Qualcomm WCD9341 is a sophisticated piece of audio engineering that played a significant role in raising the bar for mobile audio quality. Its blend of high-resolution playback, powerful on-board processing, and flexible connectivity made it a benchmark in its class. For engineers and developers, the wealth of documentation, including mainline Linux driver support, provides a stable and well-understood platform for building high-fidelity audio products. While it has been succeeded by newer models, its technical capabilities continue to be relevant in understanding what a premium-tier audio codec can achieve.

Small footprint, ideal for densely packed flagship smartphone motherboards. 4. WCD9341 Applications & Compatibility

1. Assert RESET low, wait t_RST_LOW (datasheet) 2. Deassert RESET, wait t_RST_HIGH 3. Enable VDD and VGL/VGH regulators in specified order 4. Delay per t_PWR_STABLE 5. Send register block: interface config, display timing, gamma LUT 6. Enable backlight with ramped PWM duty cycle 7. Set display on command