MAX9814 Microphone

The MAX9814 Microphone Amplifier Module is a high-performance audio component designed for electronics enthusiasts and engineers. It features the MAX9814 IC, which integrates a low-noise amplifier, a variable gain amplifier (VGA) with automatic gain control (AGC), and a microphone bias voltage generator. This module automatically adjusts the gain based on the input volume, making it perfect for applications where sound levels vary, such as voice recording, voice-activated switches, and environmental sound monitoring. Key features include a wide supply voltage range (2.7V to 5.5V), low current consumption (3mA), and a frequency response of 20Hz to 20kHz, ensuring clear audio capture across the human hearing spectrum. The module typically includes an electret microphone capsule and provides a 2Vpp output on a 1.25V bias. It is widely used in Arduino and Raspberry Pi projects, DIY audio systems, and security devices. Choose this module for its reliability, ease of integration, and excellent noise performance, making it a versatile choice for both hobbyists and professional prototypes.