AD1839AS-REEL

Overview

The AD1839AS-REEL is a high-performance single-chip audio codec manufactured by Analog Devices Inc. It features three stereo DACs and one stereo ADC, supporting sample rates up to 96 kHz for both conversion directions, with the first DAC capable of 192 kHz operation. The device utilizes multibit Sigma-Delta modulation for superior linearity and noise performance. Key specifications include 24-bit resolution, 105 dB dynamic range for ADCs, and 108 dB dynamic range for DACs. It operates on a single 5 V supply with a 3.3 V tolerant digital interface and is housed in a 52-lead MQFP package.

Feature Summary

• Integrates three independent stereo DACs and one stereo ADC within a single chip architecture.
• Features software-controllable clickless mutes and independent volume controls with 1024 linear steps per channel.
• Supports flexible serial data interfaces including I2S, left-justified, right-justified, and DSP modes.
• Includes an auxiliary TDM interface mode enabling 8-in/8-out operation with external converters.

Applications

• DVD Video and Audio Players
• Home Theater Systems
• Automotive Audio Systems
• Audio/Visual Receivers
• Digital Audio Effects Processors

Procurement Notes

Verify the specific ordering suffix REEL against the manufacturer's current documentation to confirm packaging type and reel specifications. Ensure the component matches the industrial temperature range of –40°C to +85°C as defined in the datasheet. Cross-reference the part number with official Analog Devices catalogs to confirm availability status and lead times prior to procurement.

Selection Notes

Select this component for applications requiring multiple isolated stereo outputs from a single codec. Verify that the host processor supports the required serial interface formats such as I2S or TDM. Ensure the system design accommodates the 52-lead MQFP package dimensions and provides adequate thermal management for the specified power dissipation levels under maximum load conditions.

Part Context

This model belongs to the AD1839 series of high-fidelity audio codecs. It is designed for professional and consumer audio equipment requiring high channel counts and low distortion. The device replaces older multi-chip solutions by integrating complex digital filtering and modulation circuits into a single package, simplifying board layout and reducing component count.

Replacement Considerations

Check for pin-compatible upgrades or newer revisions within the AD1839 family. Verify functional equivalence regarding serial interface timing and voltage levels when substituting with other Analog Devices audio codecs. Confirm that alternative parts support the same sample rate requirements and channel configurations.