AD1838AS-REEL

Overview

The AD1838AS-REEL is a high-performance single-chip codec featuring three stereo DACs and one stereo ADC. It supports sample rates up to 96 kHz for the ADC and 192 kHz for one DAC channel, with 24-bit resolution. The device includes on-chip volume controls with 1024 linear steps, clickless mute functions, and digital de-emphasis processing. It operates from a 5 V supply with a 3.3 V tolerant digital interface. The component is housed in a 52-lead MQFP package and is specified for the industrial temperature range of –40°C to +85°C.

Feature Summary

• Multibit delta-sigma modulators with perfect differential linearity restoration for reduced idle tones and noise floor
• Data directed scrambling DACs that are least sensitive to jitter
• Flexible serial data port supporting right-justified, left-justified, I2S compatible, and DSP serial port modes
• TDM interface mode supporting 8 inputs and 8 outputs using a single SHARC SPORT

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 matches the required tape and reel packaging configuration. Confirm the industrial temperature grade aligns with operational requirements. Ensure the 52-lead MQFP footprint is compatible with the target PCB layout. Cross-reference the revision level with the latest datasheet to confirm pinout consistency.

Selection Notes

Select this component when multiple independent stereo DAC channels are required alongside a stereo ADC in a single package. Consider the 192 kHz capability on one DAC pair if high-resolution audio playback is needed. Evaluate the TDM interface compatibility if interfacing with SHARC DSPs. Verify power supply constraints match the 5 V analog and digital requirements.

Part Context

The AD1838AS-REEL belongs to the AD1838 series of high-performance audio codecs manufactured by Analog Devices. This series integrates multibit delta-sigma modulation technology to achieve high dynamic range and low distortion. The REEL suffix indicates the component is supplied in a tape and reel format suitable for automated surface-mount assembly processes.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.