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Asahi Kasei EMD launched the AK4397, a 32-bit 192kHz high performance audio DAC for professional audio equipment and top-of-the-line consumer DVD/DVD-Audio/SACD player, AV receiver and digital mixer product applications. The AK4397 is the newest line-up of AKM's Audio4pro™ product range.

The new 32-bit digital operation block provides a fully 32-bit processing for the audio interface, perfect linear phase digital filter and delta-sigma modulator. It allows high accuracy D/A conversion of 32-bit audio signal generated by high accuracy processor such as 32-bit DSP.

Innovative design techniques include a symmetrical layout for the left-right switched capacitor DAC and fully separated analogue power routing to avoid any degradation by cross talk and common impedance. AKM's unique switched capacitor DAC with excellent anti-jitter performance, circuit design to suppress the jitter generated internally and dedicated power supply pin for clock circuit result in unprecedented sound quality.

The AK4397 further provides a dedicated input port for direct stream digital (DSD) data input, sampling rate from 30kHz to 216kHz, fully differential analogue outputs, digital attenuator, de-emphasis filters, soft mute and zero detection functions. The performance is THD+N of -103dB and S/N of 120dB. The operating voltage is 5V.

The AK4397 is available in a 44-pin LQFP package. Function and software compatibility with the industry standard AK4396 24-bit Audio DAC means a simple upgrade path for AK4396-based systems. For a demo of its high quality sound, the AK4397 evaluation boards and samples are available now.

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