GY-MAX4466 Electret Microphone Amplifier Module Adjustable Gain

GY-MAX4466 Electret Microphone Amplifier Module Adjustable Gain

The MAX4466 is a micropower operational amplifier, optimized for use as a microphone preamplifier. They provide an ideal combination of optimized gain bandwidth products and supply current, as well as low voltage operation in an ultra-small package. The MAX4466 has gain stability, requiring only 24μA of supply current to provide a 200kHz gain bandwidth. After decompression, a small stable gain of +5V/V can be achieved and 600kHz gain bandwidth product is provided. In addition, these amplifiers also have rail-to-rail output, high AVOL, and excellent power supply rejection and common mode rejection ratio, suitable for working in noisy environments. It is widely used in cellular phones, digital repeaters, earphones, hearing aids, microphone preamplifiers, portable computers, and voice recognition systems.

Features and advantages:

Power supply voltage: + 2.4V to + 5.5V (can be directly connected to the main board of the development board such as STM/ARDUNIO/Raspberry Pi)

Power rejection ratio: 112dB

Common mode rejection ratio: 126dB

AVOL: 125dB (RL = 100kΩ) rail-to-rail output

Quiescent power supply current: <24μA

Gain bandwidth: 600kHz

Size: 20.8MM*13.8MM*7.5MM

Application:

1. A cell phone
2. Digital repeater
3. Headphones
4. Hearing aids
5. Microphone preamplifier
6. Portable Computer
7. Voice recognition system