WM8955LSEFL

Overview

The WM8955LSEFL is a specialized audio data acquisition integrated circuit manufactured by Cirrus Logic Inc. It integrates Digital-to-Analog Conversion (DAC) and Analog-to-Digital Conversion (ADC) capabilities within a single package. The device supports a sampling rate of 48 kHz and features DSP functionality alongside I2S and DSP digital interfaces. It operates on analog and digital supply voltages ranging from 1.71 V to 3.6 V. The component contains two channels and is housed in a 32-VFQFN exposed pad package with dimensions of 5x5 mm. It is designed for surface mount installation and functions within a temperature range of -25°C to 85°C.

Feature Summary

• Integrated DAC and ADC with 2-channel configuration
• Supports 48 kHz sampling rate with built-in DSP
• Compatible with DSP and I2S digital audio interfaces
• Operates on supply voltages between 1.71 V and 3.6 V

Applications

• Audio signal processing systems requiring simultaneous conversion
• Embedded devices utilizing DSP or I2S audio protocols
• Portable electronics operating within specified voltage ranges

Procurement Notes

The WM8955LSEFL is listed as obsolete by the manufacturer, with product change notifications indicating discontinuation as of July 2015. Verification of current availability should be conducted through authorized distributors, noting that stock may be limited or restricted. Sourcing requires confirmation of component authenticity and condition due to its discontinued status.

Selection Notes

Designers should verify compatibility with 48 kHz sampling requirements and I2S/DSP interface standards. The 32-QFN package necessitates appropriate PCB layout considerations for thermal dissipation and soldering. Supply voltage constraints must align with system power rails, and the obsolete status requires evaluation of long-term supply chain stability.

Part Context

This component belongs to the Cirrus Logic audio codec and converter family. It serves as a specialized solution for applications needing combined audio input and output processing. The part number suffix 'LSEFL' denotes specific packaging and environmental compliance attributes within the manufacturer's catalog.

Replacement Considerations

Due to the obsolete status, direct substitutes are not explicitly confirmed in public documentation. Engineers should evaluate alternative Cirrus Logic audio converters with matching interface types and channel counts, ensuring pinout and electrical parameter compatibility.