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Product Detailed Parameters
- Description：IC DAC AUDIO 24BIT 6CH 48-LQFP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Bag
- Number of Bits：-
- Number of D/A Converters：-
- Settling Time：-
- Output Type：-
- Differential Output：-
- Data Interface：-
- Reference Type：-
- Voltage - Supply, Analog：-
- Voltage - Supply, Digital：-
- INL/DNL (LSB)：-
- Architecture：-
- Operating Temperature：-
- Package / Case：48-LQFP
- Supplier Device Package：48-LQFP (7x7)
- Mounting Type：Surface Mount
- Grade：-
- Qualification：-
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Overview
The AD1833AAST is a six-channel, 24-bit digital-to-analog converter (DAC) from Analog Devices, housed in a 48-lead LQFP package. It supports sample rates up to 192 kHz on two channels and 96 kHz on all six channels. The device features multibit sigma-delta modulators with data-directed scrambling for improved linearity. Key electrical specifications include a dynamic range of 110 dB and total harmonic distortion plus noise (THD+N) of -95 dB in two-channel mode. It operates from a single 5 V analog supply and a separate 3.3 V tolerant digital interface supply.
Feature Summary
- Six-channel stereo audio playback system with integrated interpolation filters and multibit S-D modulators
- Supports 16-, 20-, and 24-bit word lengths with sample rates up to 192 kHz
- On-chip volume control with 1024-step linear scale and software-controllable clickless mute
- Flexible serial data port compatible with I2S, left-justified, right-justified, and DSP modes
Applications
- DVD Video and Audio Players
- Home Theater Systems
- Automotive Audio Systems
- Set-Top Boxes
- Digital Audio Effects Processors
Procurement Notes
The AD1833AAST is marked as obsolete by the manufacturer. Verification of availability should focus on surplus or secondary market sources rather than direct distribution. Ensure that any sourced units are within the specified industrial temperature range of –40°C to +85°C and match the ST-48 package option.
Selection Notes
Select this component for multi-channel high-fidelity audio applications requiring up to six simultaneous DAC outputs. It is suitable for systems needing 3.3 V digital interface compatibility while maintaining a 5 V analog supply. Consider the 48-lead LQFP package constraints and thermal impedance of 91°C/W during PCB layout.
Part Context
This part belongs to the AD1833A family of multichannel audio DACs. The 'AA' suffix denotes the industrial temperature grade (-40°C to +85°C), while 'ST' indicates the Low Profile Quad Flat Package with 48 leads. Other variants include the AC version, which may have different performance characteristics or testing criteria.
Replacement Considerations
As an obsolete component, direct replacements must be evaluated based on pin compatibility and functional equivalence. No specific public substitute part numbers are confirmed in the provided documentation. Designers should verify if newer Analog Devices audio DACs support similar channel counts and sampling rates.
FAQ
What is the maximum sample rate supported by the AD1833AAST?
The AD1833AAST supports a sample rate of 192 kHz on two channels and 96 kHz on all six channels.
How does the AD1833AAST handle digital de-emphasis?
It includes built-in digital de-emphasis filters compliant with Redbook standards (50 ms/15 ms) for sample rates of 32 kHz, 44.1 kHz, and 48 kHz.
What is the power supply configuration for the AD1833AAST?
It requires a single 5 V supply for analog circuits (AVDD) and a separate supply for the digital interface (DVDD2), which can operate at 3.3 V to DVDD1.
