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Tiny 24bit audio DAC integrates high-output headphone amp

Posted: 11 Dec 2007 ?? ?Print Version ?Bookmark and Share

Keywords:DAC? headphone amp? audio amplifier?

Asahi Kasei EMD Corp. (AKM) has announced the AK4372 ultrasmall 24bit DAC with integrated high-output headphone amplifier. Offered in a 2.5mm x 3mm CSPand 61 percent smaller than the company's previously introduced QFN-packaged AK437x DACsthe AK4372 targets portable applications such as cellphones, smart phones and portable media players.

Specifications include a power consumption of 6.8mW (DAC plus headphone, no output) at 1.8V, and a minimum supply voltage capability of 1.6V. An integrated PLL accepts external BICK and LRCK as clock sources, in addition to cellphone standards and USB system clock frequencies.

Other features include analog and digital headphone volume controls, and support for external stereo and mono analog inputs, which can be internally mixed, eliminating the need for external switches. Control of power management, volume and analog mixing functions is via a three-wire or I?C bus interface.

The AK4372 is housed in an ultraminiature 24-pin CSP. Evaluation boards and samples are available now.

- Rich Pell
Audio DesignLine




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