AK4397EQ

ADCs/DACs - Special Purpose Overview

The AK4397EQ is a discontinued high-performance stereo digital-to-analog converter (DAC) manufactured by Asahi Kasei Microdevices. It features a 32-bit resolution and supports sampling rates of 192 kHz and 768 kHz. The device utilizes an I2S data interface and operates within a supply voltage range of 3V to 3.6V or 5V. Housed in a 44-lead LQFP package measuring 10x10 mm, it is designed for surface mount installation. The component functions as an audio ADC/DAC with specific characteristics for high-fidelity signal processing.

ADCs/DACs - Special Purpose Feature Summary

• 32-bit resolution with support for 192 kHz and 768 kHz sampling rates
• I2S digital interface format for data transmission
• Dual power supply options: 3V–3.6V or 5V operation
• 44-LQFP (10x10 mm) surface-mount package

ADCs/DACs - Special Purpose Applications

• DVD-Audio systems requiring high-resolution audio playback
• High-end sound cards for personal computers
• Digital audio Firewire and USB interface boxes
• Professional digital mixers

ADCs/DACs - Special Purpose Procurement Notes

The AK4397EQ is officially listed as obsolete and no longer in production by the manufacturer. Verification of availability should focus on surplus distributors or secondary market sources rather than direct manufacturing channels. Buyers must confirm the authenticity and condition of existing stock, as lead times and minimum order quantities are subject to third-party inventory status. Component obsolescence may impact long-term supply chain stability for new designs.

ADCs/DACs - Special Purpose Selection Notes

Designers should consider that this component is end-of-life and may require qualification of alternative sources. The 44-LQFP package requires appropriate PCB footprint design for 10x10 mm mounting. Electrical compatibility must be verified against system requirements for 3V/5V logic levels and I2S interface timing. Since the part is discontinued, replacement strategies should account for potential form-fit-function changes if migrating to newer AKM series devices.

ADCs/DACs - Special Purpose Part Context

The AK4397EQ belongs to the AK4397 family of premium 32-bit DACs from Asahi Kasei Microdevices. It shares functional similarities with other models in the series, such as the AK4397, but differs in packaging and specific interface configurations. This device was positioned for applications demanding low distortion and high dynamic range, leveraging multi-bit delta-sigma modulation architecture for improved linearity and jitter tolerance compared to earlier generation converters.

ADCs/DACs - Special Purpose Replacement Considerations

Publicly confirmed substitute part numbers for the AK4397EQ are not available in the provided documentation. Designers should consult official AKM obsolescence notices for recommended next-generation replacements.