WM8783GED/RV

Overview

The WM8783GED/RV is a stereo low-power analog-to-digital converter (ADC) manufactured by Wolfson Microelectronics. It accepts single-ended line-level inputs up to 1Vrms and outputs 24-bit stereo data via an I2S digital audio interface. The device supports sample rates from 8kHz to 96kHz, automatically configured based on the external master clock (MCLK). Key electrical specifications include a 96dB A-weighted signal-to-noise ratio (SNR), -83dB total harmonic distortion (THD), and 85dB channel separation. It operates on a single AVDD supply ranging from 3.0V to 3.6V, with typical quiescent current of 7.93mA at 48kHz sampling.

Feature Summary

• Hi-Fi Audio Performance: Delivers 96dB SNR (A-weighted) and -83dB THD for high-fidelity conversion.
• Automatic Clocking: Automatically configures sample rates (8kHz–96kHz) based on MCLK frequency without software configuration.
• Integrated Reference: Includes internal voltage reference circuits and LDO regulator to minimize external component count.
• Compact Packaging: Available in an 8-pin SOIC package suitable for space-constrained designs.

Applications

• LCD televisions
• Set-top boxes (STB)
• DVD recorders

Procurement Notes

Verify that the ordering suffix 'RV' indicates tape and reel packaging with a reel quantity of 3000 units. Confirm the moisture sensitivity level is MSL3 and the peak soldering temperature rating is 260°C. Ensure the component is Pb-free and matches the specified -40°C to +85°C operating temperature range.

Selection Notes

Select this component when a low-cost, fixed-gain stereo ADC is required for line-level inputs. It is suitable for applications needing automatic sample rate detection via MCLK/LRCLK ratios. Ensure the host system provides the specific MCLK frequencies listed in the datasheet (e.g., 12.288MHz for 48kHz or 96kHz sampling) to maintain correct operation.

Part Context

The WM8783GED/RV is part of the WM8783 series produced by Wolfson Microelectronics plc. The 'GED' suffix denotes the 8-pin SOIC package, while '/RV' specifies the tape and reel packaging format. This component is distinct from other Wolfson products such as the WM8983 PCM codec.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should verify pin compatibility and electrical specifications if considering alternative stereo ADCs.

FAQ

How does the WM8783 determine its sample rate?

The sample rate is configured automatically according to the external master clock (MCLK) frequency and LRCLK input. No configuration instructions are required.

What is the maximum analogue input signal level?

The maximum single-ended input signal level is typically AVDD/3.3 Vrms. At a nominal 3.3V supply, this corresponds to approximately 1Vrms.

Is the Bit Clock (BCLK) output externally?

No, the BCLK is generated internally within the WM8783 and is not transmitted or received externally. Only ADCDAT, LRCLK, and MCLK are used for the digital interface.