WM8594SEFT/V

Overview

The WM8594SEFT/V is a high-performance multi-channel audio CODEC manufactured by Cirrus Logic in a 48-lead TQFP package. It features a 24-bit stereo ADC and two independent 24-bit stereo DACs, supporting sampling rates from 32kHz to 96kHz for the ADC and up to 192kHz for the DACs. The device includes a five-stereo input selector and three-stereo output selector with analogue volume control. Electrical specifications include a typical DAC SNR of 100dB and ADC SNR of 96dB at 48kHz. It operates on 3.3V digital and analogue supplies (AVDD1) and a 9V analogue supply (AVDD2), with an operating temperature range of -40°C to +85°C.

Feature Summary

• Multi-channel architecture with flexible input/output selection and independent clocking for recording and playback
• Integrated headphone driver with jack detect capability and soft ramp volume control to prevent pops and clicks
• Dual serial control interface options supporting both 2-wire SM-bus and 3-wire SPI protocols with full readback

Applications

• Digital Flat Panel TV
• DVD-RW Recorders

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm packaging configuration. The SEFT/V designation indicates a standard tube package, whereas the RV suffix denotes tape and reel. Ensure the component meets the required Moisture Sensitivity Level (MSL3) and peak soldering temperature specifications for your assembly process. Cross-reference the part number with official distributor catalogs to confirm availability status.

Selection Notes

Select this component when designing systems requiring independent sample rates for analog-to-digital conversion and digital-to-analog conversion. The device supports multiple audio data formats including I2S, Left Justified, Right Justified, and DSP modes. Verify that the system power architecture can accommodate the separate 3.3V and 9V analogue supply rails required for optimal line-level performance.

Part Context

The WM8594 belongs to the Wolfson Microelectronics audio CODEC family, now integrated into Cirrus Logic's portfolio. It is designed as a successor to earlier stereo codecs, offering enhanced channel routing capabilities. The device is distinct from simpler mono or dual-channel variants by providing dedicated hardware for five input channels and three output channels within a single package.

Replacement Considerations

The WM8594SEFT/RV serves as a functional equivalent with identical electrical characteristics but utilizes a tape and reel packaging format instead of the standard tube.