WM8731CLSEFL

Product Overview

• Category: Audio Codec
• Use: The WM8731CLSEFL is a high-performance stereo audio codec designed for portable audio applications.
• Characteristics:
  • Low power consumption
  • High-quality audio playback and recording
  • Integrated digital signal processing (DSP) functions
  • Small form factor
• Package: QFN-20
• Essence: The WM8731CLSEFL provides a complete audio solution for portable devices, offering high-fidelity audio playback and recording capabilities in a compact package.
• Packaging/Quantity: Available in reels of 2500 units.

Specifications

• Audio Interface: I2S, SPI
• Sampling Rates: 8 kHz to 96 kHz
• Resolution: Up to 24-bit
• Power Supply: 2.7V to 3.6V
• SNR (Signal-to-Noise Ratio): 98 dB
• THD+N (Total Harmonic Distortion + Noise): 0.01%
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The WM8731CLSEFL features a 20-pin QFN package with the following pin configuration:

1. VDDA - Analog Power Supply
2. VDDD - Digital Power Supply
3. AGND - Analog Ground
4. DGND - Digital Ground
5. BCLK - Bit Clock
6. LRCLK - Left/Right Clock
7. DIN - Serial Data Input
8. DOUT - Serial Data Output
9. MCLK - Master Clock
10. RESET - Reset Input
11. GPIO1 - General Purpose Input/Output 1
12. GPIO2 - General Purpose Input/Output 2
13. GPIO3 - General Purpose Input/Output 3
14. GPIO4 - General Purpose Input/Output 4
15. SDIN - SPI Serial Data Input
16. SCLK - SPI Serial Clock
17. CSB - SPI Chip Select
18. SDO - SPI Serial Data Output
19. LOUT - Left Channel Analog Output
20. ROUT - Right Channel Analog Output

Functional Features

• High-quality audio playback and recording
• Integrated digital signal processing (DSP) functions, including EQ, filtering, and dynamic range control
• Programmable sample rates and resolutions
• Flexible audio interface options (I2S, SPI)
• Low power consumption for extended battery life
• Support for various audio formats, including PCM, MP3, and AAC

Advantages and Disadvantages

Advantages: - High-fidelity audio performance - Compact form factor - Integrated DSP functions for enhanced audio processing - Wide operating temperature range

Disadvantages: - Limited GPIO options - Requires external components for complete audio system integration

Working Principles

The WM8731CLSEFL operates by receiving digital audio data through the serial input interface (DIN or SDIN) and converting it into analog signals for output. The integrated DSP functions allow for real-time audio processing, such as equalization and filtering, to enhance the audio quality. The codec supports various sample rates and resolutions, providing flexibility for different audio applications.

Detailed Application Field Plans

The WM8731CLSEFL is suitable for a wide range of portable audio applications, including:

1. Mobile phones
2. Portable media players
3. Digital voice recorders
4. Bluetooth speakers
5. Gaming devices
6. Wearable audio devices

Detailed and Complete Alternative Models

1. WM8731LSEFL: Similar to WM8731CLSEFL but without integrated DSP functions.
2. WM8732CLSEFL: Upgraded version with improved SNR and THD+N specifications.
3. WM8733CLSEFL: Lower-cost alternative with basic audio playback and recording capabilities.

These alternative models offer different features and price points to cater to various application requirements.

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