AD1839AAS

Overview

The AD1839A is a high-performance single-chip audio codec featuring three stereo DACs and one stereo ADC. It supports sample rates up to 96 kHz, with 192 kHz available on one DAC channel. The device utilizes multibit Sigma-Delta modulators for reduced idle tones and noise floor. Key electrical parameters include 24-bit resolution, -95 dB THD+N for ADCs, and -92 dB THD+N for DACs. It operates from a 5 V analog supply and a 3.3 V tolerant digital interface. The component is housed in a 52-lead MQFP plastic package.

Feature Summary

• Multibit Sigma-Delta modulation technology with perfect differential linearity restoration
• On-chip volume controls per channel with 1024-step linear scale
• Flexible serial data port supporting I2S, left-justified, right-justified, and DSP modes
• TDM interface mode supporting 8-in/8-out operation 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 against the manufacturer's current datasheet to ensure correct package type and temperature range specifications. Confirm that the component meets all required industrial operating conditions and RoHS compliance standards before finalizing procurement orders.

Selection Notes

Select this component when designing systems requiring multiple independent stereo DAC outputs alongside a stereo ADC input. Ensure the host processor supports the required serial interface formats and clocking schemes. Verify power supply requirements match the 5 V analog and 3.3 V digital interface specifications.

Part Context

The AD1839A belongs to Analog Devices' high-performance audio codec family. It is designed for professional and consumer audio applications requiring high fidelity and low distortion. The device integrates advanced digital filtering and modulation technologies to deliver superior audio quality in a compact single-chip solution.

Replacement Considerations

Check the manufacturer's official documentation for direct pin-compatible replacements or updated revisions of the AD1839 series. Verify functional equivalence regarding sample rates, word lengths, and interface compatibility before substituting.