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Low-power audio codec
11 November 2009, Analogue, Mixed Signal, LSI
Maxim’s new MAX9867 is a low-power, stereo audio codec that integrates features such as digital microphone support and programmable digital filters. Offering a combination of high-quality MP3 playback and extended battery life, the device is well suited for portable consumer electronics. It offers a complete voice record path with stereo differential microphone inputs and stereo single-ended line inputs. Integrated support for traditional analog microphones as well as digital microphones allows engineers to future-proof their designs. For enhanced audio performance, the device includes a set of programmable digital filters that can be utilised during audio recording or playback. The filters provide the product designer with a simple method to eliminate system noise, such as the GSM packet frequency (217 Hz), from the audio path. They also allow custom noise-cancellation schemes for improved isolation of vocal frequencies. |
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