Send til en ven   Udskriv14/4 2010 kl. 15:52
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Ny IC gør det enkelt at integrere audio i produkterne

ROHM Semiconductor lancerer nu stand-alone playback IC-famlie, der gør det let at integrere audiofeatures i nye og eksisterende produkter (in english). 

ROHM Semiconductor presents the ML22(Q)34x Playback IC family, a series of low power audio decoders with integrated Mask ROM or Flash memory and a 1W monaural speaker amplifier.

The IC series incorporates all peripheral components necessary for speech and sound output in a single chip. Thanks to its event input system, audio playback can be started with a sensor or switch event without relying on an additional microcontroller. In addition, it allows for the control of peripheral circuits such as LEDs.


The family features high quality compression and bit length variability adopted to the type of audio data that is needed as well as integrated PWM conversion minimizing ambient noise, all resulting in clear, high-quality sound output.

Due to its compact design the one-chip solution enables an easy integration of audio functions into existing and new electronic systems. Suitable for a wide range of applications from automotive (car navigation, dashboard sounds) via industrial (set top boxes, elevators and medical equipment) to consumer (home appliances, alarm systems and toys) the series can be deployed in any applications which require voice guidance, sound or music.

The family comes in two different versions offering a choice of features like different memory types, speech ROM capacity (640 kbit or 896 kbit), playback time (20 or 35 seconds) and operating temperature ranges (from -40 to 85° C). ROHM Semiconductor also provides an evaluation kit, which enables an easy creation of the ROM code on the PC and a simple programming of audio data into the flash memory.

The new ML22(Q)34x Playback IC family is already available in samples and will be available in volume from May 2010.

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