What the integrated features mean for your BOM
The input multiplexer allows switching between two microphone sources or a line input without an external analog switch — saves one IC and the associated routing. The built-in microphone bias eliminates the need for a separate bias resistor network and decoupling cap on the mic line. Shutdown control reduces quiescent draw when the audio path is idle, which matters for battery-powered products where every milliampere-hour counts. Thermal protection prevents latch-up or damage if the output is shorted or driven into a low-impedance load at elevated ambient temperatures.
Lifecycle and sourcing posture
The MAX9813LEKA+T carries an Active product status with ROHS3 compliance. No end-of-life notice or last-time-buy window is in effect, so it remains a safe choice for both new designs and ongoing production.