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The WM8738GED is an audio CODEC (Coder-Decoder) manufactured by Wolfson Microelectronics (now part of Cirrus Logic). Below are its key specifications, descriptions, and features:

Specifications:

• Type: Stereo Audio CODEC
• Interface: I2S, Left-Justified, Right-Justified, DSP
• Resolution: 24-bit
• Sampling Rate: 8 kHz to 96 kHz
• Signal-to-Noise Ratio (SNR): 100 dB (DAC), 95 dB (ADC)
• Total Harmonic Distortion + Noise (THD+N): -85 dB (DAC), -80 dB (ADC)
• Supply Voltage: 1.8V to 3.6V (Digital & Analog)
• Power Consumption: Low-power operation with configurable power-down modes
• Package: 28-pin SSOP

Descriptions:

The WM8738GED is a high-performance, low-power stereo CODEC designed for portable audio applications. It integrates a stereo DAC (Digital-to-Analog Converter) and ADC (Analog-to-Digital Converter) with flexible digital audio interfaces. It supports multiple audio formats and is suitable for applications like MP3 players, digital recorders, and portable media devices.

Features:

• On-Chip Digital Filters: Includes oversampling digital interpolation and decimation filters.
• Programmable Audio Processing: Features like volume control, mute, and de-emphasis.
• Low Power Modes: Configurable power-down modes for battery-saving operation.
• Flexible Clocking: Supports master or slave clocking modes.
• Integrated Headphone Driver: Capable of driving headphones directly.
• Microphone Input: Includes a built-in microphone preamp with adjustable gain.
• Digital Core & Analog Supply Separation: Allows for optimized noise performance.

This device is designed for high-quality audio playback and recording in compact, power-efficient systems.