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Minimizing Shutdown Current in the MAX9877 Audio Subsystem IC

Authored on: Apr 22, 2009

Technical Paper / Application Note

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The MAX9877 audio subsystem IC was designed with the knowledge that any devices connected to an I2C bus expect both the SDA and SCL lines to idle in a logic-high state. Therefore, this device achieves the minimum shutdown supply current by relying upon the logic-high state at both SDA and SCL. This application note describes three methods for achieving minimum shutdown current in systems where SDA and SCL must be set to a logic-low when the MAX9877 is placed in shutdown.



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