AK4493EQ

ADCs/DACs - Special Purpose Overview

The AK4493EQ is a stereo premium 32-bit digital-to-analog converter (DAC) utilizing VELVET SOUND technology. It supports PCM data up to 768 kHz and DSD data at 22.4 MHz. The device achieves a signal-to-noise ratio of 123 dB and a total harmonic distortion plus noise of -113 dB. Key internal technologies include an Over Sampling Ratio Doubler (OSRD) for low out-of-band noise and six selectable 32-bit digital filters. It operates with analog/digital supply voltages of 3.0–3.6 V and a separate logic supply of 4.75–5.25 V, housed in a 48-pin LQFP package.

ADCs/DACs - Special Purpose Feature Summary

• Supports high-resolution audio inputs including 768 kHz PCM and 22.4 MHz DSD.
• Integrates OSRD technology to reduce out-of-band noise while maintaining low power consumption.
• Features six selectable 32-bit digital filters for flexible sound tuning.
• Delivers 123 dB SNR and -113 dB THD+N performance.

ADCs/DACs - Special Purpose Applications

• High-end Audio Systems
• Professional Audio Equipment
• AV Receivers
• CD/SACD Players
• Network Audio Devices

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to confirm package type and tape/reel specifications. Ensure compatibility with required supply voltage ranges (3.0-3.6V for AVDD/TVDD and 4.75-5.25V for VDDL/R). Confirm RoHS compliance status through official documentation prior to procurement.

ADCs/DACs - Special Purpose Selection Notes

Select the AK4493EQ for applications requiring support for 22.4 MHz DSD signals and high dynamic range. Compare power consumption requirements against the AK4490EQ; the AK4493EQ consumes 203 mW compared to 145 mW for the AK4490EQ. Ensure the design accommodates the full differential output architecture and the specific 48-pin LQFP footprint.

ADCs/DACs - Special Purpose Part Context

The AK4493EQ succeeds the AK4490EQ within Asahi Kasei Microdevices' premium DAC lineup. It introduces support for higher frequency DSD data (22.4 MHz vs 11.2 MHz) and adds a sixth digital filter option. Both devices share similar core architectures but differ in maximum sampling rates and power profiles.

ADCs/DACs - Special Purpose Replacement Considerations

The AK4493SEQ is a compatible alternative offering similar performance with 125 dB SNR. Verify pinout compatibility and software register settings when substituting between EQ and SEQ variants.