AD1895AYRSZ

Overview

The AD1895AYRSZ is a 24-bit stereo asynchronous sample rate converter manufactured by Analog Devices Inc. It supports input and output sampling frequencies up to 192 kHz, with an operating range of 6 kHz to 215 kHz. The device provides a dynamic range of 128 dB (A-weighted) and total harmonic distortion plus noise (THD+N) ranging from -115 dB to -122 dB. It accepts 16-, 18-, 20-, or 24-bit data formats via I2S, TDM, left-justified, or right-justified interfaces. Powered by a 3.3 V core and 3.3 V/5.0 V I/O supply, it operates within a temperature range of -40°C to +105°C in a 28-lead SSOP package.

Feature Summary

• Supports 1:8 upsampling and 7.75:1 downsampling ratios with automatic frequency sensing
• Features a linear phase FIR filter with 128 dB dynamic range and jitter rejection starting below 1 Hz
• Includes hardware-controllable soft mute and bypass mode for direct data passing
• Enables daisy-chaining multiple units via TDM serial output port

Applications

• Home theater systems
• Automotive audio systems
• DVD and CD-R players
• Set-top boxes
• Digital audio effects processors

Procurement Notes

Verify the specific suffix 'YRSZ' against official documentation to confirm the 28-lead SSOP plastic package and industrial temperature grade (-40°C to +105°C). Ensure that the ordering information matches the manufacturer's current revision status, as component availability and packaging options may vary over time.

Selection Notes

Select this component when asynchronous conversion between independent clock domains is required without programming overhead. It is suitable for applications needing high-fidelity audio processing with support for word lengths up to 24 bits. Consider the power consumption requirements, which increase with higher output sample rates, reaching 132 mW at 192 kHz.

Part Context

The AD1895AYRSZ belongs to the second generation of Analog Devices' asynchronous sample rate converters, succeeding the AD1890. It offers improved performance metrics including better jitter rejection and expanded serial interface modes compared to its predecessor, maintaining compatibility with standard digital audio protocols while enhancing signal integrity.

Replacement Considerations

The AD1890 is the previous generation model referenced in the datasheet. Verify pinout and feature compatibility if substituting, as the AD1895 adds TDM support and improved dynamic range specifications not present in earlier iterations.