Maxim Integrated MAX4465EXK+TG51 Microphone Amplifier

The MAX4465EXK+TG51 from Maxim Integrated is a high-performance, low-power, compact microphone amplifier that is ideal for a variety of audio applications. This miniature, high-precision device is specifically designed to interface with electret condenser microphones, providing a complete microphone and preamplifier solution with fixed gain settings for small form-factor systems.

Key Features

• Optimized Design: The MAX4465EXK+TG51 is engineered to deliver excellent audio performance with a wide supply voltage range of 2.4V to 5.5V, making it versatile for use in battery-powered devices.
• Fixed Gain: This amplifier comes with a preset gain of 51dB, which simplifies the design process by eliminating the need for external gain-setting components.
• Low Power Consumption: It is designed for power-sensitive applications with a quiescent current of just 24µA, extending battery life in portable devices.
• High PSRR: The device features a high power-supply rejection ratio (PSRR), which significantly reduces the noise contributed by power supply fluctuations, ensuring cleaner audio capture.
• Integrated Bias Resistor: The MAX4465EXK+TG51 includes an internal biasing resistor for the electret microphone, further simplifying the circuit design.
• Compact SOT23 Packaging: Housed in a tiny 5-pin SOT23 package, this amplifier is perfect for space-constrained applications like mobile phones, laptops, and wearable devices.

Applications

The MAX4465EXK+TG51 is adept at amplifying microphone signals in a variety of applications, including:

• Portable Audio Devices
• Bluetooth Headsets
• Hands-Free Car Kits
• Security and Surveillance Systems
• Conference Speakerphones

With its combination of low power consumption, fixed gain, and compact size, the MAX4465EXK+TG51 microphone amplifier from Maxim Integrated is a highly efficient solution for designers looking to integrate high-quality audio amplification into their projects without sacrificing space or battery life.