MAX9812L electret microphone microphone Enlarge development board sensor module

NOTE: MIC microphone head sent free of charge, quality in general, or configure their own customers better MIC microphone head.

MAX9812 are single / dual-input, 20dB fixed-gain microphone amplifier. They have a small package size, built-in low noise microphone bias, suitable for applications such as notebook computers, mobile phones, handheld computers and other portable audio devices. The amplifier gain-bandwidth product of 500kHz, output up to full swing, with the industry's top level of 100dB PSRR, low THD + N (0.015%). Also it has a series of power-saving features: only 230μA supply current, the overall shutdown mode the supply current drops and the sum of bias current 100nA.
217Hz power supply rejection ratio of 100dB
Low 0.015% THD + N
MAX9812L / MAX9813L: 2.7V to 3.6V
MAX9812H / MAX9813H: 4.5V to 5.5V
Built-in low-noise microphone bias source
MAX9812L / MAX9813L: 2.3V
MAX9812H / MAX9813H: 4.0V
100nA Low-Power Shutdown Mode
Full output swing

20dB fixed gain
Note: Delivery Mimi distribution head, no welding.