Description

WM8731CLSEFL/R is an interface - CODECs electronic component model with a stereo codec and H/P support. It has stereo 24-bit multi-bit sigma delta ADCs and DACs with oversampling digital interpolation and decimation filters. The device features digital audio input word lengths from 16-32 bits and sampling rates from 8kHz to 96kHz with a low power consumption of analog pass-through 12mW, 3.5mW (‘L’ variant) and playback only 22mW, 8mW (‘L’ Variant). The WM8731CLSEFL/R is controlled via a 2 or 3 wire serial interface that provides access to all features including volume controls, mutes, de-emphasis, and power management facilities. It's suitable for portable MP3 players and recorders, CD and Minidisc recorders, PDAs/smartphones with an available 28-lead SSOP or 28-lead QFN package.

Specifications and features

• Highly efficient headphone driver
• ADC SNR 90dB (‘A’ weighted) at 3.3V, 85dB at 1.8V
• DAC SNR 100dB (‘A’ weighted) at 3.3V, 95dB at 1.8V
• Low power of 1.42 – 3.6V digital supply operation and 2.7 – 3.6V analog supply operation
• ADC and DAC Sampling Frequency: 8kHz – 96kHz
• 2 or 3-Wire MPU Serial Control Interface
• Microphone Input and Electret Bias with Side Tone Mixer
• Available in 28-lead SSOP or 28-lead QFN package

Application Scenarios

The WM8731CLSEFL/R is designed to provide high-quality audio features for the following portable devices:

• Portable MP3 Players and Recorders
• CD and Minidisc Recorders
• PDAs / smartphones

Comparison

• Low power consumption
• Highly efficient headphone driver
• High audio performance with ADC SNR of 90dB (‘A’ weighted) and DAC SNR of 100dB (‘A’ weighted)
• Available in a small 28-lead SSOP or the smaller 28 lead quad flat leadless package (QFN)
• Programmable audio data interface modes and 2 or 3 wire serial control interface

• Not suitable for devices with high power consumption requirements
• Not suitable for high-end audio devices that require advanced audio processing features