ADAU1979WBCPZ

Overview

The ADAU1979WBCPZ is a quad analog-to-digital converter (ADC) from Analog Devices Inc., designed for high-performance audio applications. It features four differential inputs with a typical full-scale AC voltage of 4.5 V rms and utilizes a multibit sigma-delta architecture. The device offers a dynamic range of 109 dB and total harmonic distortion plus noise of −95 dB. It supports sample rates from 8 kHz to 192 kHz with 24-bit resolution. Powered by a single 3.3 V supply, it includes an on-chip PLL, digital volume control, and I2C/SPI interfaces. Qualified for automotive use, it is housed in a 40-lead LFCSP package.

Feature Summary

• Quad ADC with 4.5 V rms differential inputs and 109 dB dynamic range
• On-chip phase-locked loop (PLL) for master clock generation
• Supports 8 kHz to 192 kHz sample rates with 24-bit resolution
• Digital volume control with autoramp and software-controllable mute

Applications

• Automotive audio systems
• Active noise cancellation systems

Procurement Notes

Verify the component matches the specific 40-lead LFCSP-WQ(6x6) package and automotive grade qualification. Confirm that the ordering suffix corresponds to the reel or tray packaging variant required for the assembly process. Ensure the source documentation aligns with Rev. B specifications for accurate electrical parameters.

Selection Notes

Select this component when a quad-channel ADC with low EMI design and integrated PLL is required. It is suitable for systems needing digital volume control and flexible serial audio data formats like I2S or TDM. Ensure the application can accommodate the 3.3 V single-supply requirement and the thermal characteristics of the LFCSP package.

Part Context

The ADAU1979 is part of Analog Devices' specialized ADC/DAC portfolio, targeting professional and automotive audio markets. It complements other devices in the series by providing multi-channel conversion capabilities within a compact form factor. The device integrates signal processing features such as high-pass filtering and gain adjustment directly on-chip.

Replacement Considerations

The ADAU1978 is a related quad ADC model within the same family. Verify pin compatibility and functional differences before substitution. No other direct public substitute part numbers are confirmed in the provided documentation.