Wcd9341 Datasheet -

The WCD9341 is a Flagship-Class, Low-Power, High-Fidelity Audio Codec designed for premium smartphones and portable devices. It represents Qualcomm’s move toward native DSD support and 32-bit/384 kHz playback before the industry shifted to integrated Aqstic codecs (WCD9380/90 series).

Key Strengths:

Key Limitations:

If you are reverse-engineering a board, you need the pinout reference. According to the WCD9341 datasheet, the chip is divided into functional groups:

Note: The WCD9341 datasheet is explicit about grounding. Do not connect analog and digital grounds directly. The datasheet specifies a 0Ω resistor or ferrite bead between AGND and DGND near the chip.

In the intricate world of mobile electronics, the System on Chip (SoC) often gets the glory for processing speed and graphics, but the quality of the user experience—specifically voice calls and audio playback—is governed by a specialized component known as an audio codec. The WCD9341 is a prominent example of this technology.

Manufactured by Qualcomm, the WCD9341 is an Audio Codec IC (Integrated Circuit) designed to serve as the analog-to-digital and digital-to-analog interface for smartphones and other mobile devices. Frequently paired with high-end Qualcomm Snapdragon processors (such as the Snapdragon 845 and 855), this chip is responsible for the high-fidelity audio performance found in many flagship smartphones from the late 2010s.

This piece provides an informative breakdown of the WCD9341 datasheet, exploring its architecture, key features, and functional applications.

The audio DSP provides five user-selectable interpolation filters for PCM (datasheet Table 12):

Measured stopband attenuation: –85 dB @ 22.05 kHz (44.1 kHz sample rate) – adequate but not high-end.

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 |

Comparison with earlier WCD9335:

Real-world measured performance (from LG V20/G6 using WCD9341 + ESS9218 combo):

The WCD9341 is a highly capable, mature audio codec that still competes well against modern integrated solutions (2026 perspective). It shines in applications requiring native DSD playback, low playback power, and software-configurable filters without external DSP.

Best suited for:

Avoid if:

Final rating: 8.5/10 – excellent for its era, but showing its age in power efficiency and register complexity.

For a full register-level programming guide or timing diagrams, refer to Qualcomm document 80-NL713-XX under NDA. This review is based on public revision 1.4 (2016-08-12) and community-validated measurements.

The WCD9341 is a high-performance audio codec developed by Qualcomm, famously marketed as part of their Aqstic audio technology platform. It is designed to provide high-fidelity (Hi-Fi) audio experiences for premium mobile devices, such as smartphones and tablets. Core Technical Specifications

The WCD9341 is engineered to meet audiophile-grade standards directly within mobile hardware:

High-Resolution Audio Support: It supports PCM audio up to 384-kHz/32-bit and offers native support for DSD (Direct Stream Digital) playback.

Dynamic Range: Features a high dynamic range of 123 dB, ensuring clear differentiation between the quietest and loudest sounds.

Audio Quality: It boasts low THD+N (Total Harmonic Distortion + Noise) performance, minimizing signal degradation during playback.

Interface Connectivity: The chip often interfaces via SLIMbus, UART, and PCM for audio data transmission within a mobile system-on-chip (SoC) architecture. Device Integration

The WCD9341 is typically paired with high-end Qualcomm Snapdragon processors to handle complex audio processing tasks. Common pairings include:

Snapdragon 835: This was the flagship pairing that introduced Aqstic technology to a wide audience.

Snapdragon 670 and 710: These mid-to-high tier chipsets often utilize the WCD9341 to provide premium audio features in more accessible devices.

Popular Smartphones: You can find this IC in notable devices like the Samsung Galaxy S8, Note 8, and Note 9, as well as the Xiaomi Mi Note 2. Use Cases and Repair wcd9341 datasheet

In the mobile industry, the WCD9341 is a critical component for:

Hi-Fi Music Playback: Delivering studio-quality sound to wired headphones.

Replacement & Repair: It is a common part for technicians. If a phone experiences complete audio loss, distorted sound, or microphone failure, the WCD9341 IC is often the targeted component for replacement.

is a high-fidelity audio codec IC from the Qualcomm Aqstic series, primarily integrated with the Snapdragon 835

mobile platform. It is widely used in flagship devices like the Samsung Galaxy S8 Key Specifications Audio Quality : Supports playback of up to 384 kHz / 32-bit PCM audio and native DSD (Direct Stream Digital) Performance

: Features a High-Fidelity DAC with a dynamic range typically exceeding

and extremely low Total Harmonic Distortion plus Noise (THD+N). Voice Features

: Supports "Always-on" voice UI, including voice activation and low-power keyword detection. Connectivity : Integrated support for the interface for digital audio channel access. : Features a configuration commonly found in mobile device repair parts. Typical Applications Flagship Smartphones : Found in the Samsung Galaxy series

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

: Utilized for professional-grade mobile audio recording and playback. repair guides for a specific device like the Galaxy S8 or Note 8?

The Qualcomm Aqstic WCD9341 Go to product viewer dialog for this item.

is a high-end mobile audio codec IC designed to deliver audiophile-grade sound performance and low-power voice UI capabilities in flagship mobile devices. Integrated into major flagship smartphones like the Samsung Galaxy S8, S10, and Note series, the

acts as the primary hardware interface converting digital signals into pristine analogue audio.

This technical guide provides a deep dive into the specifications, pinouts, repair troubleshooting, and technical architecture of the 🛠️ Overview of the WCD9341 Architecture The

is part of the Qualcomm Aqstic audio platform. Unlike basic audio chips, it combines a highly efficient digital-to-analogue converter (DAC), an analogue-to-digital converter (ADC), and a dedicated digital signal processor (DSP) into a single, surface-mount package. Key Functional Blocks

Integrated Audio DSP: Powers ultra-low-power voice processing and supports simultaneous wake-word detection for voice assistants.

High-Resolution DAC: Delivers direct digital-to-analogue conversion capable of reproducing pure, high-fidelity audio.

Microphone ADC: Manages multichannel microphone inputs with noise cancellation and echo suppression routines.

Amplification Drive: Direct line-out and headphone amplification circuitry, removing the need for external op-amps. 📊 Qualcomm WCD9341 Technical Specifications

The chip was developed to match the acoustic criteria of standalone Hi-Fi audio components. Its core capabilities include: Specification Details Manufacturer Qualcomm IC Model WCD9341 (also marked as WCD9341-001) Form Factor 154-pin BGA (Ball Grid Array) package PCM Audio Support Up to 384 kHz / 32-bit audio playback DSD Support Native DSD (Direct Stream Digital) audio decoding Low Noise Performance Ultra-low total harmonic distortion + noise (THD + N) Operating Application Flagship smartphones, enterprise computing 📌 Pinout & Physical Configuration The Go to product viewer dialog for this item.

is built using a dense 154-ball layout. This high pin count handles high-speed digital audio buses, analogue power lines, and multi-channel microphone/speaker outputs. Primary Pin Categories Digital Audio Interfaces (SLIMbus / I2S)

Used for communication with the main application processor (e.g., Qualcomm Snapdragon platform).

Pins carry clock signals, transmit/receive data lines, and frame sync indicators. Analogue Input / Output Rails HPH_L / HPH_R: Left and right headphone outputs.

MIC_IN_1 to MIC_IN_4: Low-noise bias pins and inputs for multiple microphones. EAR_OUT: Signal line for the earpiece speaker. Power Supply Rails Digital Core Voltage (VDD_DIG) Analogue Audio Voltage (VDD_ANA) Charge Pump Voltage Supply (VDD_CP) 🔧 Common Fault Symptoms and Diagnostics

When the WCD9341 IC fails—often due to physical drops, liquid damage, or thermal stress—the device displays specific audio failures. Because this IC manages almost all sound processing, technicians from professional repair labs identify issues via these symptoms:

No Sound Output: No audio from the bottom speaker, earpiece, or wired headphones.

Distorted Audio: Crackling or heavily muffled sound across speaker and headphone paths.

Microphone Failure: Inability to record voice memos, dead microphone in calls.

Stuck in Headphone Mode: The device detects a connected headset when none is plugged in. Key Limitations:

Motherboard Shorts: Excessive current draw or a hot spot directly over the IC under thermal camera imaging. 🛠️ Repair and Replacement Guide

Replacing the WCD9341 requires expert BGA micro-soldering and hot-air rework skills.

[Fault Diagnosed] ➡️ [Apply Flux/Heat] ➡️ [Remove Chip] ➡️ [Clean Pads] ➡️ [Solder New IC] Steps for Installation

Board Inspection: Test the surrounding capacitors for shorts to ground using a multimeter in diode mode.

Desoldering: Apply professional-grade BGA flux around the chip. Heat the area to approximately 350°C to 380°C using a hot air station, then lift the IC with tweezers.

Pads Cleaning: Use a soldering iron and desoldering wick to clean the motherboard pads thoroughly.

Soldering: Place the new, pre-balled WCD9341 IC onto the motherboard, ensuring proper orientation of Pin A1. Heat until the solder balls reflow into place.

Are you troubleshooting a specific device model or experiencing a particular audio issue? A new audio codec built with the help of Golden Ears

The WCD9341 - a mysterious component that sparked the curiosity of many electronics enthusiasts. Let's weave a tale around this enigmatic datasheet.

In a small, cluttered workshop nestled in the heart of a bustling city, a young engineer named Emma stumbled upon an obscure reference to the WCD9341 datasheet. She had been searching for an elusive part to complete her pet project, a retro-style gaming console. As she poured over the cryptic documentation, Emma became increasingly fascinated by the WCD9341's specifications.

According to the datasheet, the WCD9341 was a high-performance audio codec designed for portable devices. It boasted an impressive array of features: low power consumption, high-fidelity sound reproduction, and a tiny footprint. Emma's eyes widened as she imagined the possibilities. Could this be the secret to creating the ultimate retro gaming experience?

As she delved deeper into the datasheet, Emma discovered that the WCD9341 was manufactured by a relatively unknown company called Wuhan Cirrus Logic (WCL). A quick online search revealed that WCL was a Chinese firm with a reputation for producing innovative, yet often overlooked, semiconductor products.

Intrigued by the WCD9341's potential, Emma decided to reach out to WCL directly. She sent an email to their sales department, inquiring about the availability and pricing of the component. Days turned into weeks, and Emma had almost given up hope when she received a response from a WCL representative.

The representative, a man named Mr. Li, explained that the WCD9341 was indeed still in production, albeit in limited quantities. He offered Emma a sample, provided she could prove her legitimacy as a legitimate engineer or project developer. Emma was thrilled and quickly provided the necessary documentation.

As the sample arrived, Emma eagerly mounted the WCD9341 on her prototype board and began to experiment. The results were nothing short of miraculous. The audio quality was sublime, with crystal-clear highs and rich, deep bass. The low power consumption meant that her gaming console could run for hours on a single battery charge.

Word of Emma's success with the WCD9341 spread quickly through online forums and social media. Soon, other electronics enthusiasts and retro gaming aficionados began to take notice of the component. The WCD9341 became something of a holy grail, with many seeking to incorporate it into their own projects.

As demand for the WCD9341 grew, WCL took notice. The company began to ramp up production, and the component became more widely available. Emma's project had inadvertently helped revive interest in WCL's products, and the company was grateful.

In the end, Emma's discovery of the WCD9341 datasheet led to a serendipitous chain of events. Her passion project had become a catalyst for innovation, connecting her with like-minded individuals and even influencing the production of a once-obscure semiconductor component.

The WCD9341 had transformed from a mysterious datasheet entry into a legendary component, cherished by electronics enthusiasts worldwide. And Emma's retro gaming console? It became a beloved showcase for the WCD9341's capabilities, inspiring others to push the boundaries of what was possible with creative engineering and a dash of curiosity.

The WCD9341 is a high-tier discrete audio codec from the Qualcomm Aqstic line, primarily integrated with the Snapdragon 835 mobile platform . It is widely recognized as the audio engine for flagship devices like the Samsung Galaxy S8, Note 8, and Note 9 . Key Technical Specifications

The WCD9341 is designed for audiophile-grade performance in mobile devices :

Hi-Fi Playback Support: Native playback for up to 32-bit/384kHz PCM and DSD512 audio files .

Dynamic Range: Up to 130 dB SNR (Signal-to-Noise Ratio), ensuring ultra-clean output .

Total Harmonic Distortion (THD+N): Exceptionally low at -114 dB for high-fidelity reproduction .

Headphone Amplifier: An integrated amp capable of outputting up to 2 Vrms, sufficient for driving higher-impedance headphones .

Voice Features: Includes an integrated DSP for always-on voice UI (supporting two simultaneous wake-up words) with ultra-low power consumption .

Physical Footprint: Typically comes in a 154-pin WLPSP (Wafer Level Chip Scale Package) . Common Use Cases & Repair

This chip handles speaker output, microphone input, and complex voice processing . Technicians often replace this IC to fix specific motherboard-level faults such as: Distorted or "dead" audio . Muffled microphone input or no sound from speakers . Voice UI or wake-up word recognition failures .

Here is the harsh reality for most developers: Qualcomm does not publicly release full datasheets for the WCD9341. You cannot download a 2,000-page PDF from their public website. If you are reverse-engineering a board, you need

How to legally acquire the WCD9341 datasheet:

Beware of scams: Many websites claiming to offer the "WCD9341 full datasheet PDF" for a fee are distributing incomplete marketing slides or malware.

The WCD9341 datasheet is more than a technical document; it is a roadmap to mobile audio excellence. While obtaining the full document requires legal agreements with Qualcomm, the publicly available specifications confirm that this codec remains a benchmark for high-fidelity portable audio.

For engineers, the takeaway is clear: The WCD9341 offers 130 dB dynamic range and native DSD support in a tiny 5x6 mm package—making it worth the effort to secure the datasheet via official channels. For audiophiles, understanding its pinout and power requirements explains why phones using this chip require high-impedance headphones (50Ω+) to unlock the "high-gain mode" described in Section 3.4 of the datasheet.

Next Steps for the Reader:

Disclaimer: This article is an aggregation of public research and reverse-engineered data. Qualcomm, Snapdragon, and WCD9341 are trademarks of Qualcomm Incorporated. For official engineering, please sign an NDA and request the proprietary datasheet directly from Qualcomm.

The Qualcomm WCD9341 is a high-tier discrete audio codec part of the Qualcomm Aqstic suite, specifically engineered to deliver audiophile-grade performance in mobile devices. Integrated into flagship platforms like the Snapdragon 835 and 845, it is a staple in high-end legacy devices such as the Samsung Galaxy S8, Note 8, and Meizu 16th. Key Technical Specifications

High-Resolution Playback: Supports up to 384-kHz/32-bit Hi-Fi audio on the PCM side.

Native DSD Support: Provides native decoding for DSD64 and DSD128 (Direct Stream Digital), which was previously exclusive to SACDs and high-end portable players.

Ultra-Low Distortion: Features a DAC designed with ultra-low Total Harmonic Distortion plus Noise (THD+N) to ensure a crystal-clear signal without background noise.

Custom Tuning: Incorporates a "Golden Ear" digital filter, developed with expert listeners to identify and mitigate minute audio colorizations and distortions.

Voice Integration: Includes a low-power, always-on voice UI processor that supports multiple wake-up words (e.g., "Hey Google" or "Alexa") simultaneously. Practical Performance & Maintenance

In real-world use, the WCD9341 is often paired with external amplifiers, such as the Cirrus Logic CS35L41, to drive more demanding headphones. While it is a durable Qualcomm component, failures in older devices often manifest as no sound or microphone issues, requiring specialized chip replacement by technicians. A new audio codec built with the help of Golden Ears

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)

: 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

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:

The Qualcomm (marketed as part of the audio platform) is a high-tier discrete audio codec found in flagship devices like the Samsung Galaxy S8 , Note 8, and S10 series Key Technical Highlights

While full official datasheets are often restricted to Qualcomm partners, technical summaries and "Aqstic" marketing reveals several "gold standard" features: Integrated Hi-Fi DAC/Amp

: It functions as an audibly transparent DAC (Digital-to-Analog Converter) and amplifier, engineered to match or exceed the performance of professional-grade audio setups in mobile form factors. High Performance Metrics SNR & Dynamic Range

: It is designed for crystal-clear sound with a high Signal-to-Noise Ratio (SNR) and minimal background hiss. Low Latency

: Optimized for high-speed signal processing, reducing the delay between audio production and output. Power Efficiency

: The chip utilizes a specialized architecture to maintain high-fidelity audio while significantly reducing battery drain compared to older generations. Physical Connectivity : It features a massive 1057-pin package configuration

, which allows for complex audio routing and advanced noise cancellation/echo suppression algorithms. ariat-tech.com Notable Industry Perspective On audiophile forums like Audio Science Review

, the WCD9341 is noted for its ability to deliver transparent audio quality that is often indistinguishable from high-end external DACs, making it a favorite for those using smartphones as their primary music players. Audio Science Review (ASR) Forum pinout diagrams for a specific repair, or more information on the driver support for this codec? WCD9341-0-154WLPSP-TR-01-0 | QUALCOMM