AD1833AASTZ

Overview

The AD1833AASTZ is a multichannel, 24-bit, 192 kHz digital-to-analog converter (DAC) from Analog Devices Inc. It features six audio playback channels with differential outputs, supporting sample rates up to 192 kHz on two channels and 96 kHz on all six. The device integrates high-performance digital interpolation filters, multibit sigma-delta modulators, and continuous-time voltage-output DAC sections. Key specifications include a dynamic range of 110 dB, -95 dB THD+N in two-channel mode, and an on-chip volume control with 1024 linear steps. It operates from a single 5 V analog supply and a separate 3.3 V tolerant digital interface supply, housed in a 48-lead LQFP package.

Feature Summary

• Six-channel stereo DAC architecture with 24-bit resolution and support for 48 kHz, 96 kHz, and 192 kHz sample rates
• High performance: 110 dB dynamic range and -95 dB THD+N (two-channel mode)
• On-chip clickless mute and software-controllable volume control with 1024-step linear scale per channel
• Flexible serial data port supporting I2S, Left/Right Justified, DSP, Packed, and TDM modes

Applications

• DVD Video and Audio Players
• Home Theater Systems
• Automotive Audio Systems
• Set-Top Boxes
• Digital Audio Effects Processors

Procurement Notes

Verify component status as the datasheet indicates 'OBSOLETE'. Confirm availability through authorized distributors or secondary markets. Ensure ESD precautions are observed during handling due to electrostatic sensitivity. Check for RoHS compliance details in specific ordering guides if required by local regulations.

Selection Notes

Select the AD1833AASTZ for applications requiring multi-channel high-fidelity audio playback with precise digital control. Ensure the system design accommodates the 48-lead LQFP package and provides separate 5 V analog and 3.3 V digital power supplies. Verify that the host processor supports the required serial interface formats (I2S, DSP, etc.) and SPI control port for configuration.

Part Context

The AD1833A belongs to Analog Devices' family of high-performance audio DACs designed for professional and consumer audio equipment. It utilizes patented multibit sigma-delta technology to achieve excellent linearity and low noise. The AASTZ suffix denotes the industrial temperature range (-40°C to +85°C) and lead-free packaging within the Low Profile Quad Flat Package (LQFP) form factor.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. As the component is marked obsolete, engineers should evaluate newer Analog Devices audio DACs or third-party equivalents based on pin compatibility and electrical specifications.