The WM9712XC/WM9712 is a low power, high performance stereo audio codec with integrated touch screen controller, designed by Cirrus Logic. It is a key component for portable audio and multimedia applications, providing high-fidelity audio playback and recording capabilities along with a versatile touch screen interface.

Applications:

• Portable media players (PMPs)
• Personal Digital Assistants (PDAs)
• Smartphones
• Tablet computers
• Gaming devices

Features:

• Stereo audio codec with high-resolution ADC and DAC
• Low power consumption for extended battery life
• Integrated 4-wire touch screen controller
• Support for various audio formats (e.g., MP3, AAC, WAV)
• Microphone preamplifier with adjustable gain
• Headphone amplifier with output power control
• I2C control interface for flexible configuration
• Advanced power management features

Benefits:

• Enhanced audio experience with high-fidelity playback and recording
• Responsive and accurate touch screen control
• Prolonged battery life in portable devices
• Simplified system design with integrated functionality
• Reduced bill of materials (BOM) cost
• Flexible configuration options for diverse applications

Additional Details:

The WM9712 series codecs typically support sampling rates up to 48kHz or higher, ensuring high-quality audio reproduction. The integrated touch screen controller interfaces directly with a touch panel, allowing for seamless integration into touch-enabled devices. It is often used in conjunction with application processors to provide a complete audio and user interface solution. The device operates on a low voltage supply, contributing to its low power characteristics. It is often available in small form factor packages suitable for space-constrained portable devices.

The inclusion of a microphone preamplifier allows for direct connection to microphones, enabling voice recording and communication functionalities. The headphone amplifier provides sufficient power to drive a variety of headphone types. The I2C interface facilitates easy communication with the host processor for configuration and control. The WM9712 family provides a cost-effective and efficient solution for integrating high-quality audio and touch screen capabilities into portable electronic devices.