AD1835AS

Overview

The AD1835AS is a high-performance, single-chip audio codec manufactured by Analog Devices Inc. It features 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 pair capable of operating at 192 kHz. It utilizes multibit Sigma-Delta modulation technology to achieve high dynamic range and low distortion. The codec includes on-chip volume controls with 1024-step linear scaling and software-controllable clickless mutes. It operates from a 5 V supply with a 3.3 V tolerant digital interface and is housed in a 52-lead MQFP plastic package.

Feature Summary

• Multibit Sigma-Delta Modulators with Perfect Differential Linearity Restoration
• Flexible Serial Data Port Supporting I2S, Left/Right Justified, and DSP Modes
• On-Chip Volume Controls with 1024-Step Linear Scale per Channel
• TDM Interface Mode for 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 catalog to ensure correct temperature range and packaging options. Confirm that the component meets RoHS compliance requirements if mandated by your project specifications. Cross-reference the part number with official distributor databases to validate authenticity and traceability before finalizing procurement orders.

Selection Notes

Select this component when designing systems requiring multiple independent stereo outputs from a single chip. Ensure the host processor supports the required serial interface formats such as I2S or TDM. Verify that the system clock can provide the necessary master clock frequencies for the desired sample rates. Consider the power supply requirements, specifically the separate analog and digital 5 V supplies, during the initial hardware design phase.

Part Context

The AD1835AS belongs to the AD1835 family of audio codecs from Analog Devices. This series is designed for professional and consumer audio applications requiring high channel counts and flexible connectivity. The AS variant specifically denotes the industrial temperature range version packaged in a 52-lead MQFP. It serves as a central audio processing unit in complex multimedia systems.

Replacement Considerations

Check the AD1835AASZ datasheet for pin-compatible alternatives within the same product family. Verify functional equivalence regarding channel count and serial interface compatibility before substitution.