WM8737

series introduction

# WM8737 Product Series Introduction

## 1. Overview
The WM8737 is a highly versatile and advanced product series developed by Wolfson Microelectronics (now part of Cirrus Logic), designed specifically for audio applications. This series offers a comprehensive set of features and capabilities that make it an ideal choice for a wide range of consumer and professional audio devices.

## 2. Key Features

### High - Quality Audio Conversion
- **ADC and DAC Performance**: The WM8737 series is equipped with high - resolution analog - to - digital converters (ADCs) and digital - to - analog converters (DACs). The ADCs can accurately capture analog audio signals with high fidelity, while the DACs can reproduce digital audio data into high - quality analog signals. This ensures that the audio input and output are of the highest possible quality, with low distortion and noise levels.
- **Sample Rate Flexibility**: It supports a wide range of sample rates, typically from 8 kHz to 96 kHz. This flexibility allows it to be used in various audio applications, from low - bandwidth voice communication to high - definition audio playback.

### Integrated Audio Processing
- **Volume Control**: The series includes built - in volume control functionality. Users can easily adjust the volume of the audio input and output through digital control interfaces. This provides a convenient way to manage audio levels without the need for external volume control components.
- **Equalization**: Some models in the WM8737 series offer basic equalization capabilities. This allows for the adjustment of the audio frequency response, enabling users to optimize the sound according to their preferences or the characteristics of the audio content.

### Low Power Consumption
- **Power - Saving Modes**: The WM8737 is designed with power - saving in mind. It features multiple power - saving modes that can be activated depending on the application's requirements. In standby or idle states, the device can consume very low power, making it suitable for battery - powered devices such as portable audio players, smartphones, and tablets.

### Multiple Audio Input and Output Options
- **Input Channels**: It provides multiple analog audio input channels, which can be used to connect different audio sources such as microphones, line - in devices, or musical instruments. This allows for flexible audio signal routing and mixing.
- **Output Channels**: The series also offers multiple analog audio output channels, enabling it to drive speakers, headphones, or other audio output devices. Some models support stereo output, while others can be configured for multi - channel audio applications.

### Digital Interface Compatibility
- **I2S Interface**: The WM8737 is compatible with the widely used Inter - IC Sound (I2S) digital audio interface. This interface allows for easy integration with microcontrollers, digital signal processors (DSPs), and other audio - related digital devices. It simplifies the connection and communication between the WM8737 and the rest of the audio system.
- **Control Interface**: It also features a control interface, typically an I2C interface, which is used to configure the device's various settings such as volume, sample rate, and audio processing parameters. This makes it easy to control and customize the operation of the WM8737.

## 3. Applications

### Consumer Audio Devices
- **Portable Media Players**: The low power consumption and high - quality audio conversion capabilities of the WM8737 make it an excellent choice for portable media players. It can provide clear and immersive audio playback, enhancing the user experience.
- **Smartphones and Tablets**: In smartphones and tablets, the WM8737 can be used for both audio input (e.g., microphone) and output (e.g., speaker and headphone). Its small form factor and low power requirements are well - suited for the compact design of these devices.

Images for reference

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Datasheets

• PDF 1
• PDF 2

Partlist