GY-MAX4466 Electret Microphone Amplifier Max4466 With Adjustable Gain

MAX4466 Micro - Power Operational Amplifier: A High - Performance Microphone Preamplifier Solution

MAX4466 is a micro - power operational amplifier specially optimized for microphone preamplification. With an ideal combination of gain - bandwidth product and power supply current, as well as ultra - small packaging and low - voltage operation characteristics, it performs excellently in various portable audio devices.

Core Performance Advantages

Low - power design: The quiescent power supply current is only 24μA, which greatly extends the battery life of the device.

Wide voltage compatibility: The power supply voltage range is +2.4V to +5.5V, and it can be directly connected to mainstream development boards such as STM, ARDUINO, and Raspberry Pi.

Excellent gain characteristics: It has gain stability. In the decompressed state, it can achieve a small stable gain of +5V/V, and the gain - bandwidth product reaches 600kHz (with a gain bandwidth of 200kHz in the basic state).

High anti - interference ability: The power supply rejection ratio is 112dB, and the common - mode rejection ratio is as high as 126dB, making it suitable for stable operation in noisy environments.

Output characteristics: It supports rail - to - rail output, and the open - loop gain (AVOL) is 125dB under a 100kΩ load.

Compact size: The package size is only 20.8MM × 13.8MM × 7.5MM, saving installation space.

Typical Application Scenarios

Cellular phones

Digital repeating devices

Headphone equipment

Hearing aids

Microphone preamplifiers

Portable computers

Voice recognition systems

With its low power consumption, high anti - interference performance, and wide compatibility, MAX4466 has become an ideal choice in the field of portable audio processing, especially suitable for application scenarios with strict requirements on power consumption and space.