Minimizing Shutdown Current in the MAX9877 Audio Subsystem IC
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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