AD1895AYRS

Overview

The AD1895AYRS is a 24-bit, high-performance stereo asynchronous sample rate converter supporting input and output sampling frequencies up to 192 kHz. It provides a dynamic range of 128 dB (A-Weighted) and total harmonic distortion plus noise ranging from –115 dB to –122 dB. The device accepts 16-, 18-, 20-, or 24-bit data with input/output sample ratios spanning from 7.75:1 downsampling to 1:8 upsampling. It operates on a 3.3 V core supply and 3.3 V/5.0 V I/O supply, housed in a 28-lead SSOP package.

Feature Summary

• Automatically senses sample frequencies without programming requirements
• Attenuates sample clock jitter using a digital servo loop
• Supports multiple serial formats including Left-Justified, I2S, Right-Justified, and TDM modes
• Includes hardware-controllable soft mute and bypass mode

Applications

• Home Theater Systems
• Automotive Audio Systems
• DVD and CD-R Players
• Set-Top Boxes
• Digital Audio Effects Processors

Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm package type and temperature range. Confirm that the component meets required environmental specifications for the intended operating conditions before finalizing procurement decisions.

Selection Notes

Select this component when asynchronous conversion between independent audio clocks is required. Ensure the design supports the necessary master clock frequencies and serial interface timing constraints. Verify power supply requirements for both the core and I/O domains to match system voltage levels.

Part Context

The AD1895AYRS belongs to the Analog Devices AD1895 family of second-generation asynchronous sample rate converters. It builds upon the AD1890 architecture with improved performance metrics and additional serial interface flexibility for integration into complex digital audio systems.

Replacement Considerations

The AD1895AYRSRL is a reel-packaged version of the same functional device. Cross-reference pinouts and electrical specifications when substituting with other asynchronous sample rate converters.