AD1833AASTZ-REEL

Overview

The AD1833AASTZ-REEL is a multichannel, 24-bit, 192 kHz digital-to-analog converter (DAC) from Analog Devices. It integrates six audio playback channels, each with a digital interpolation filter and sigma-delta modulator. The device supports 48 kHz and 96 kHz sample rates on all six channels, and 192 kHz on two channels. Key electrical parameters include a dynamic range of 110 dB, signal-to-noise ratio of 110 dB, and total harmonic distortion plus noise of -95 dB in two-channel mode. It operates on a single 5 V analog supply and a separate 3.3 V to 5 V digital supply, housed in a 48-lead LQFP package.

Feature Summary

• Six-channel architecture supporting up to 24-bit resolution at sample rates of 48 kHz, 96 kHz, or 192 kHz (on two channels).
• Multibit sigma-delta modulators with data-directed scrambling for reduced idle tones and perfect differential linearity.
• On-chip clickless mute and 1024-step linear volume control per channel via SPI interface.
• Flexible serial data port compatible with I2S, left-justified, 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 the obsolete status of this component before design-in. Confirm that the REEL suffix indicates tape-and-reel packaging for surface-mount assembly. Ensure ESD precautions are observed during handling due to the sensitivity of the CMOS circuitry. Check for available evaluation boards such as EVAL-AD1833AEB for prototyping purposes.

Selection Notes

Select this part for applications requiring high-channel-count audio playback with low jitter sensitivity. The device requires an internal master clock of 24.576 MHz for standard operation; ensure the system clock generator can provide appropriate MCLK frequencies (e.g., 12.288 MHz, 24.576 MHz, or 36.864 MHz). Verify compatibility with the host processor's serial interface timing constraints.

Part Context

This component belongs to the AD1833A family of multichannel audio DACs. The 'AA' grade specifies industrial temperature range (-40°C to +85°C) and specific performance metrics like 110 dB dynamic range. The 'ST' denotes the 48-lead LQFP plastic package, while '-REEL' specifies the reel packaging format for automated placement.

Replacement Considerations

Publicly confirmed substitute part numbers are not provided in the source material. As the device is marked obsolete, consult Analog Devices for current equivalent products or legacy support options.