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Input dynamic range extension of the BelaSigna 300 series

Posted: 12 Mar 2009 ?? ?Print Version ?Bookmark and Share

Keywords:dynamic range BelaSigna? DSP? ADCs? application note?

This application note describes the functioning of the BelaSigna 300 input dynamic range extension (IDRX) feature. The goal of this document is to allow our customers to use this feature in their applications. This document describes the functioning of the IDRX, as well as the configuration parameters related to the IDRX.

In most hearing instruments, the dynamic range of the ADCs is typically 90dB. For some high precision sound processing, this is not sufficient. This is the reason why ON Semiconductor developed the IDRX concept on the BelaSigna 300 DSP series.

Through the IDRX technology, a pair of 90dB BelaSigna 300 ADCs can combine to provide an extended 110dB dynamic range. Combined with a 24bit DSP architecture, the BelaSigna 300 provides a high precision sound quality.

View the PDF document for more information.

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