WM8775SEDS/RV

ADCs/DACs - Special Purpose Overview

The WM8775SEDS/RV is a high-performance stereo audio Analog-to-Digital Converter (ADC) manufactured by Cirrus Logic Inc. It features a 24-bit multi-bit sigma-delta architecture with a four-channel input multiplexer, designed for digitizing multiple analog sources in surround sound and home hi-fi applications. The device supports ADC sampling frequencies from 32kHz to 96kHz and digital audio output word lengths of 16, 20, 24, or 32 bits. Key electrical specifications include a Signal-to-Noise Ratio (SNR) of 102dB ('A' weighted at 48kHz), Total Harmonic Distortion (THD) of -90dB, and channel separation of 90dB. It operates on a 2.7V to 5.5V analog supply and a 2.7V to 3.6V digital supply.

ADCs/DACs - Special Purpose Feature Summary

• Four stereo ADC inputs with programmable analog gain adjustment from +24dB to -21dB in 0.5dB steps.
• Digital gain adjust range from -21.5dB to -103dB with programmable Automatic Level Control (ALC) or Limiter.
• Supports I2S, Left Justified, Right Justified, and DSP digital audio interface formats.
• Controlled via 3-Wire SPI Compatible or 2-wire Serial Interface with Master or Slave clocking modes.

ADCs/DACs - Special Purpose Applications

• Surround Sound AV Processors
• Home Hi-Fi Systems
• Automotive Audio Equipment

ADCs/DACs - Special Purpose Procurement Notes

The ordering suffix /RV indicates the component is supplied in tape and reel packaging with a standard reel quantity of 2,000 units. This variant shares identical electrical characteristics and functionality with the tray-packaged WM8775SEDS/V but differs only in its delivery format for automated surface-mount assembly.

ADCs/DACs - Special Purpose Selection Notes

Select this component when designing systems requiring a stereo ADC with flexible input routing from up to four distinct analog sources. Ensure the design accommodates the required analog supply voltage (up to 5.5V) and digital supply (up to 3.6V). Verify that the host controller supports either the 3-wire SPI or 2-wire serial control interface for register configuration.

ADCs/DACs - Special Purpose Part Context

The WM8775SEDS/RV is part of the WM8775 series produced by Wolfson Microelectronics plc, which is now part of Cirrus Logic Inc. It is software compatible with the WM8776. The device is housed in a 28-lead SSOP package and is rated for an operating temperature range of -25°C to +85°C.

ADCs/DACs - Special Purpose Replacement Considerations

The WM8775SEDS/V is a direct functional replacement differing only in packaging (tray vs. tape and reel). The WM8776 is also noted as software compatible within the same product family.