WM8782ASEDS/V

ADCs/DACs - Special Purpose Overview

The WM8782ASEDS/V is a stereo audio analog-to-digital converter (ADC) manufactured by Cirrus Logic. It features a 24-bit resolution and supports sampling frequencies from 8 kHz to 192 kHz using sigma-delta modulation with over-sampling rates of 128x, 64x, or 32x. The device operates in slave mode only, utilizing hardware-controlled interface modes including I2S, Left Justified, and Right Justified formats via FORMAT and IWL pins. It accepts stereo line-level inputs up to 1 Vrms, supported by an integrated front-end operational amplifier. Electrical specifications include a typical signal-to-noise ratio (SNR) of 100 dB at 48 kHz and total harmonic distortion (THD) of -93 dB. The component is housed in a 20-lead SSOP package and functions within an operating temperature range of -40°C to +85°C.

ADCs/DACs - Special Purpose Feature Summary

• Stereo 24-bit ADC with 100 dB SNR and -93 dB THD performance
• Hardware-configurable digital audio interfaces: I2S, Left Justified, Right Justified
• Integrated front-end operational amplifier for signals exceeding 1 Vrms
• Slave mode operation with system clock support from 128fs to 768fs

ADCs/DACs - Special Purpose Applications

• Recordable DVD Players
• Personal Video Recorders
• Set-Top Boxes (STB)
• Studio Audio Processing Equipment
• Automotive Systems

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific suffix 'SEDS' indicates the tube packaging variant, as 'RV' denotes tape and reel. Confirm availability status, as this component may be subject to discontinuation or limited stock depending on current distributor inventories. Ensure compliance with RoHS directives and lead-free soldering requirements (260°C peak reflow).

ADCs/DACs - Special Purpose Selection Notes

Select this component for applications requiring high-fidelity stereo digitization without complex digital control interfaces. It is suitable for systems where hardware pin configuration suffices for format selection. Ensure the host system provides appropriate master clock frequencies (MCLK) relative to the desired sample rate. Verify that input signal levels do not exceed the full-scale input of 1.0 Vrms to prevent overload distortion.

ADCs/DACs - Special Purpose Part Context

The WM8782A represents an updated revision of the original WM8782 series, maintaining functional compatibility while potentially incorporating manufacturing improvements. It belongs to Cirrus Logic's portfolio of high-performance audio converters designed for consumer electronics and professional audio equipment. The 'V' suffix typically denotes environmental compliance, such as being halogen-free.

ADCs/DACs - Special Purpose Replacement Considerations

Direct replacements include the standard WM8782SEDS. Other variants within the same family, such as the WM8782GEDT/RV, offer identical electrical characteristics but differ in packaging type (TSSOP vs. SSOP) or reel configuration. Cross-referencing pinouts and thermal resistance values is recommended when substituting packages.