AD1835AAS

Overview

The AD1835AAS is a high-performance single-chip audio codec manufactured by Analog Devices Inc. It integrates four stereo digital-to-analog converters (DACs) and one stereo analog-to-digital converter (ADC). The device supports sample rates up to 96 kHz for all channels, with the first DAC capable of 192 kHz operation. It features 24-bit resolution, multibit sigma-delta modulators, and differential outputs. Key specifications include 105 dB SNR for ADCs and 108 dB SNR for DACs. The codec operates on a 5 V supply with 3.3 V tolerant digital interfaces and utilizes a flexible serial data port compatible with I2S, left-justified, right-justified, and DSP modes.

Feature Summary

• Multibit Sigma-Delta Modulators with Perfect Differential Linearity Restoration
• Differential Output Architecture for Optimum Performance
• On-Chip Volume Controls with 1024-Step Linear Scale
• Flexible Serial Data Port Supporting Multiple Audio Formats

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 when purchasing. The 'Z' suffix indicates a lead-free component compliant with RoHS standards. Ensure the package option matches the required footprint, typically the 52-lead MQFP plastic package designated as S-52-1. Confirm temperature range requirements against the industrial specification of -40°C to +85°C before finalizing procurement orders.

Selection Notes

Select this component for systems requiring multiple independent stereo DAC outputs from a single chip. It is suitable for applications needing a stereo ADC input alongside extensive DAC capabilities. Consider the 5 V analog supply requirement and the availability of 3.3 V tolerant digital interfaces for system compatibility. Verify clocking constraints, specifically the master clock frequency requirements relative to the desired sample rate.

Part Context

The AD1835AAS belongs to the AD1835A series of audio codecs from Analog Devices. This family focuses on high-fidelity audio processing using patented multibit sigma-delta technology. The part is designed to replace discrete solutions in multi-channel audio environments, offering integrated volume control and mute functions to simplify board design and reduce component count in professional audio equipment.

Replacement Considerations

Direct pin-compatible replacements are not explicitly listed in the provided documentation. Review the AD1835 datasheet for other members of the family, such as variants with differential DAC outputs or I2C control ports, which may offer functional similarities but require interface adaptation.