XMAU7118_VC1¶
16-Channel PDM to I²S/TDM Audio Converter with Dual PDM Clock Outputs and UART/I²C Configuration Interfaces
XMAU7118 is a professional-grade 16-channel PDM to I²S/TDM audio converter developed based on the high-performance XMOS chip, specifically designed for digital microphone array applications. This product supports 16 PDM digital microphone inputs and delivers 32-bit audio resolution with exceptional audio performance.
- The product integrates powerful digital signal processing capabilities, supporting simultaneous input from 16 PDM microphones with output sample rates ranging from 4kHz to 192kHz, meeting the requirements of various audio capture application scenarios.
- Supports standard I²S and TDM audio output formats, providing 8 independent SDATA output channels that can operate in Master or Slave mode, offering extremely high flexibility for system integration.
- The product delivers exceptional audio performance with THD+N < -110dB and dynamic range up to 140dB, implementing complete parameter configuration through UART/I²C interfaces, providing audio equipment manufacturers with professional-grade multi-channel audio capture solutions.
XMAU7118_VC1 Product Brief XMAU7118_VC1 Datasheet 
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Features and Specifications¶
- Multi-Channel Audio Processing Capability
- Supports 16 PDM digital microphone input channels
- Provides 32-bit audio resolution processing precision
- Achieves <-110dB THD+N and 140dB dynamic range
- Flexible Sample Rate Configuration
- Output sample rates cover 4kHz to 192kHz range
- Automatic detection and adaptation to different sample rates
- Intelligent Clock Management
- Integrated dual PDM clock output functionality
- Supports automatic PDM clock generation mechanism
- Standard Audio Output Interfaces
- Supports standard I²S and TDM audio output formats
- Provides 8 independent SDATA output channels
- Supports I²S Master/Slave operating modes
- Flexible Configuration Interfaces
- Complete parameter configuration via I²C/UART interfaces
- Supports dynamic switching of multiple operating modes
Normal Operating Conditions
| Function | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| Operating Temperature | 0 | - | 70 | ℃ |
| 3.3V Operating Voltage | 3.0 | 3.3 | 3.6 | V |
| 1.8V Operating Voltage | 1.62 | 1.80 | 1.98 | V |
| 0.9V Operating Voltage | 0.855 | 0.90 | 0.945 | V |
Product Dimensions 13±0.1mm(L)X13±0.1mm(W)X0.8±0.1mm(H)
Documentation and Tools¶
| Type | Title | Download |
|---|---|---|
| Product Datasheet | XMAU7118-VC1 Datasheet | [] |
| Reference Design | [] | |
| Application Guide | [] |
| Type | Description | Download |
|---|---|---|
| Debugging Tools | Debugging Tools |
Feature Comparison¶
| Feature | XMAU7118 | ADAU7118 | Advantage |
|---|---|---|---|
| PDM Input Channels | 16-channel | 8-channel | 2x channel count |
| Audio Sample Rate & Bit Depth | 4KHz~192KHz/32bit | 4KHz~192KHz/24bit | Higher bit depth |
| Dynamic Range | 140dB | 126dB | 14dB improvement |
| Control Interfaces | UART+I²C | I²C | More control interfaces |
| I²S Operating Mode | Master/Slave | Slave | More operating modes |
| I²S Output | 8 SDATA | 1 SDATA | 4x quantity |
Application Scenarios¶
-
Smart Speakers & Voice Assistant Systems
Far-field pickup arrays in smart speakers, multi-microphone noise reduction in voice assistant devices, voice recognition in smart home control centers
-
Professional Conference & Video Communication Equipment
Multi-point pickup in video conferencing systems, omnidirectional pickup in remote collaboration equipment, microphone array processing in conference phones
-
Industrial Audio Monitoring & Security Systems
Multi-point collection in industrial equipment acoustic monitoring, sound source localization in security systems, multi-channel collection in environmental noise monitoring
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Automotive Audio & In-Vehicle Communication Systems
Microphone arrays in car voice recognition systems, multi-microphone processing in in-car call noise reduction, voice interaction in intelligent cockpits
Ordering Information¶
| Product Name | Product Model | Product Image |
|---|---|---|
| 16-Channel PDM to I²S/TDM Audio Converter with Dual PDM Clock Outputs and UART/I²C Configuration Interfaces | XMAU7118-VC1 |  |
Related Evaluation Boards¶
-
A316-HF-I2S-V1 PDM to I²S/TDM Converter Evaluation Board
The development board exposes XU316 interfaces through pin headers for independent evaluation of XMAU7118_VC1 performance