ADAV803ASTZ

Overview

The ADAV803ASTZ is a stereo audio codec designed for recordable DVD and CD applications. It integrates a stereo ADC, stereo DAC, and sample rate converter (SRC) within a single chip. The device supports 24-bit resolution with A-weighted dynamic ranges of 102 dB for the ADC and 101 dB for the DAC. It accommodates sample rates from 8 kHz to 192 kHz and includes an integrated S/PDIF receiver and transmitter. Control is managed via an I²C-compatible serial interface, and it operates on 3.0 V to 3.6 V supplies in a 64-lead LQFP package.

Feature Summary

• Integrates stereo analog-to-digital and digital-to-analog converters with high-performance multibit sigma-delta architectures.
• Includes a stereo sample rate converter supporting asynchronous operation between input and output domains.
• Features built-in digital interface receiver and transmitter compliant with IEC 60958 standards.
• Provides programmable gain amplifiers with automatic level control functionality for optimized recording levels.

Applications

• DVD-recordable drives
• CD-R/W drives

Procurement Notes

Verify component authenticity through authorized Analog Devices distributors or direct manufacturer channels. Confirm the specific Rev. A datasheet revision matches design requirements. Ensure environmental compliance documentation aligns with target market regulations. Validate package integrity upon receipt to prevent handling damage.

Selection Notes

Select this model when I²C control is required, as opposed to the SPI-based ADAV801. Verify that the system requires integrated S/PDIF I/O and sample rate conversion capabilities. Ensure power supply constraints fit the 3.0 V to 3.6 V operating range. Confirm thermal management meets the -40°C to +85°C commercial temperature specification.

Part Context

This component belongs to the ADAV80x family of audio codecs from Analog Devices. It shares functional similarities with the ADAV801 but utilizes an I²C interface instead of SPI. The device targets high-fidelity audio recording and playback systems requiring flexible digital routing and format conversion.

Replacement Considerations

The ADAV801ASTZ serves as a functional alternative if SPI communication is preferred over I²C. Both devices share identical audio performance metrics and pinout configurations except for the control interface pins.

FAQ

What is the difference between the ADAV801 and ADAV803?

The primary difference lies in the device control interface; the ADAV803 uses an I²C-compatible serial port, while the ADAV801 utilizes an SPI interface.

Does the ADAV803 support asynchronous sample rate conversion?

Yes, the integrated stereo sample rate converter allows for asynchronous operation, enabling different input and output sample rates ranging from 8 kHz to 192 kHz.

What is the purpose of the Automatic Level Control (ALC) feature?

The ALC automatically adjusts the Programmable Gain Amplifier (PGA) gain to prevent the ADC output from exceeding preset limits, maximizing dynamic range for undefined input signals.