AD1835AAS-REEL

Overview

The AD1835AAS-REEL 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 capable of operating at 192 kHz. It utilizes multibit Sigma-Delta modulators and offers 24-bit resolution. Key specifications include an ADC signal-to-noise ratio of 105 dB and a DAC signal-to-noise ratio of 108 dB. The component operates on a 5 V supply with a 3.3 V tolerant digital interface and is housed in a 52-lead MQFP package.

Feature Summary

• Multibit Sigma-Delta modulation technology with perfect differential linearity restoration to reduce idle tones and noise floor.
• Flexible serial data port supporting right-justified, left-justified, I2S compatible, and DSP serial port modes.
• On-chip volume controls per channel with 1024-step linear scale and software-controllable clickless mutes.
• Differential outputs for optimum performance and data-directed scrambling DACs least sensitive to jitter.

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 current manufacturer documentation to confirm lead-free status and packaging type. The REEL suffix indicates tape and reel packaging. Confirm availability through authorized distributors as stock levels fluctuate. Ensure the industrial temperature range specification meets the operational requirements of the target environment before finalizing procurement.

Selection Notes

Select this component when designing systems requiring multiple independent stereo DAC outputs from a single chip. Verify that the host processor supports the required serial interface formats such as I2S or TDM. Ensure the system clock architecture can provide the necessary master clock frequencies for the desired sample rates. Check power supply constraints to ensure compatibility with the specified 5 V analog and digital supply voltages.

Part Context

This part belongs to the AD1835A series of high-performance audio codecs. It is functionally similar to the AD1836A but offers a higher number of DAC channels. The AD1835A is designed for professional and consumer audio applications requiring high fidelity and low distortion. It integrates digital filters and volume controls, reducing the need for external components.

Replacement Considerations

The AD1835AASZ is a lead-free version of the same component with identical electrical characteristics. The AD1836AASZ is a related model but has fewer DAC channels and different sampling rate capabilities. Verify pin compatibility and register settings when substituting with other members of the AD1835 family.