WM8973CLGEFL/V

Overview

The WM8973CLGEFL/V is a low-power stereo CODEC designed for portable digital audio applications. It integrates complete interfaces to stereo or mono microphones and a stereo headphone, eliminating the need for separate amplifiers. The device supports master or slave operation with internal clock generation from 12MHz, 24MHz, or standard 256fs/384fs rates, supporting sample rates up to 96kHz without an external PLL. It operates at supply voltages down to 1.8V (digital core 1.42V). Key electrical parameters include DAC SNR of 98dB and ADC SNR of 95dB at 3.3V. It features a 400mW BTL speaker driver, a headphone driver with >40mW output on 16Ω, and advanced DSP including graphic equalizer and automatic level control.

Feature Summary

• Integrates high-quality stereo ADCs and DACs with multi-bit delta-sigma architecture for optimized performance.
• Includes on-chip 400mW bridge-tied load (BTL) speaker driver and capless headphone driver.
• Features advanced digital signal processing such as graphic equalizer, 3-D sound enhancement, and automatic level control.
• Supports flexible digital audio interfaces including I2S, DSP Mode, and MSB/Right justified formats in master or slave modes.

Applications

• MP3 Player / Recorder
• AAC/WMA/Multi-Format Player / Recorder
• Minidisc Player / Recorder
• Portable Digital Music Systems

Procurement Notes

Verify the specific ordering suffix 'V' indicates tape and reel packaging when sourcing components. Confirm that the -25°C to +85°C operating temperature range aligns with your system requirements. Ensure compatibility with the 32-lead QFN (5x5x0.9mm) footprint during PCB layout. Cross-reference the manufacturer's latest datasheet revision to confirm pinout and register map consistency before finalizing procurement.

Selection Notes

Select this component for designs requiring integrated microphone and headphone interfaces with minimal external components. It is suitable for systems needing internal clock generation from common USB or standard audio clocks without an external PLL. Consider its power consumption characteristics, which vary significantly based on supply voltage and active blocks. Verify that the 1.8V to 3.6V analog supply range matches your battery or power management architecture.

Part Context

The WM8973L series is part of Wolfson Microelectronics' portfolio of low-power audio codecs, later acquired by Cirrus Logic. This specific model targets portable consumer electronics where space and power efficiency are critical constraints. It serves as a comprehensive solution for audio input and output in handheld devices, replacing discrete amplifier and codec combinations.

Replacement Considerations

WM8973CLGEFL/RV