AD1838AASZ-REEL

Overview

The AD1838AASZ-REEL is a high-performance single-chip audio codec manufactured by Analog Devices Inc. It features three stereo digital-to-analog converters (DACs) and one stereo analog-to-digital converter (ADC). The device supports sample rates up to 96 kHz, with 192 kHz available on one DAC channel. It utilizes multibit sigma-delta modulation for high fidelity, offering 24-bit resolution. Key performance metrics include 105 dB SNR for the ADC and 108 dB SNR for the DAC, with -95 dB THD+N. The component operates on a 5 V supply, accepts 3.3 V tolerant digital interfaces, and is housed in a 52-lead MQFP package.

Feature Summary

• Multibit Sigma-Delta Modulation Architecture
• Flexible Serial Data Interface
• On-Chip Volume Controls
• Software Controllable Clickless Mutes

Applications

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

Procurement Notes

Verify the obsolete status of this component before design implementation. Confirm that the REEL suffix indicates tape-and-reel packaging suitable for automated assembly. Ensure compatibility with existing PCB footprints and verify lead-free compliance if required by current regulations.

Selection Notes

Select this component for applications requiring multiple independent stereo DAC outputs from a single chip. Consider the industrial temperature range and 5 V operation when designing power supplies. Evaluate the need for differential outputs and the specific serial interface modes supported by the host processor.

Part Context

This part belongs to the AD1838A family of high-performance audio codecs. It shares architectural similarities with other members like the AD1839 but offers a distinct configuration of three stereo DACs and one stereo ADC. The device is designed for professional and consumer audio systems requiring high dynamic range and low distortion.

Replacement Considerations

AD1838AAS

FAQ

What is the maximum sample rate supported by the AD1838A?

The AD1838A supports sample rates up to 96 kHz for all channels. One DAC channel can operate at 192 kHz.

Does the AD1838A support 3.3 V logic levels?

Yes, the digital interface is 3.3 V tolerant, allowing it to interface with 3.3 V logic devices while operating from a 5 V supply.

How many volume control steps are available per channel?

Each DAC channel has independent volume control with 1024 linear steps.