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Stereo DAC targets high-end audio apps

Posted: 16 Dec 2008 ?? ?Print Version ?Bookmark and Share

Keywords:32bit DAC stereo? application audio high-end? 32bit FIR filter?

AKM Semiconductor has launched the AK4390, a high performance 32bit stereo DAC for professional and high-end audio applications. The newest member of the Audio4pro product family, the AK4390 incorporates a minimum-phase FIR 32bit short delay filter with a latency of only seven samples (7/fs). The filter is designed to reproduce recorded audio without pre-echo.

The AK4390 uses a symmetrical layout for the left and right channels. The fully symmetrical layout ensures that the signal from the digital processing block has the shortest path possible to the analog block to avoid noise coupling for improved sound quality.

The AK4390 supports sampling rates from 30kHz to 216kHz, fully differential analog outputs, a digital attenuator, de-emphasis filters, soft mute and zero detect functions. It offers a dynamic range of 120dB and THD+N of -103dB. The device operates off of a single +5V power supply.

The AK4390 is available is a 30-pin VSOP package. Evaluation boards and samples are available now. The AK4390 is priced from $3.44 in 5k unit volumes.

- Kenton Williston
DSP DesignLine

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