HKD MAX9814 Microphone Amplifier with AGC - Low Noise, 2.7-5.5V

The HKD MAX9814 Microphone Amplifier Module is a low-noise, high-performance audio amplifier designed with Automatic Gain Control (AGC) for consistent sound levels in various applications. Ideal for voice recording, audio detection, and sound projects, it automatically adjusts gain to prevent distortion from loud sounds while amplifying softer signals.

With selectable gain settings (40dB, 50dB, 60dB) and programmable attack/release times, it provides flexibility for different environments. Operating at 2.7V-5.5V and consuming only 3mA, the module is energy-efficient and suitable for battery-powered devices. Its built-in low-noise microphone bias ensures clear audio input, while the compact package makes it easy to integrate into projects.

Features:

• Built-in Automatic Gain Control (AGC) for consistent audio levels.
• 3 gain settings: 40dB, 50dB, 60dB.
• Programmable attack and release time.
• Wide supply voltage: 2.7V-5.5V.
• Very low input noise density: 30nV/ Hz.
• Low THD: 0.04% typical.
• Low power-off mode for energy saving.
• Integrated 2V low-noise microphone bias.
• Compact 14-pin TDFN (3mm x 3mm) package.
• Wide temperature range: -40 C to +85 C.

Specifications:

• Model: MAX9814 Microphone Amplifier Module
• Type: AGC | Microphone Amplifier
• Supply Voltage: 2.7V - 5.5V
• Current Consumption: ~3mA
• Output Signal: 2VPP on 1.25V bias
• Gain Options: 40dB / 50dB / 60dB
• Input Noise Density: 30nV/ Hz
• THD: 0.04% (typical)
• Package Size: 14-pin TDFN, 3mm x 3mm
• Operating Temp: -40 C to +85 C

Applications:

• Voice and sound detection projects
• Audio recording systems
• Speech recognition modules
• Portable and battery-powered audio devices
• Sound monitoring and noise-level systems

What's in the box
1 x HKD MAX9814 Microphone Amplifier with AGC - Low Noise, 2.7-5.5V