ماژول میکروفون با تقویت کننده MAX9814

The MAX9814 is a cost-effective, high-performance microphone amplifier with automatic gain control (AGC) and low-noise microphone bias. The device features a low noise front-end amplifier, a variable gain amplifier (VGA), an output amplifier, a microphone bias generator and an AGC control circuit.

The MAX9814 High-Performance Microphone AGC Amplifier, model CMA-4544PF-W, is an advanced audio solution that excels in capturing and amplifying sound with exceptional clarity. Featuring an Automatic Gain Control (AGC) system, it dynamically adjusts the amplification level to accommodate varying audio input levels, ensuring consistent and high-quality output. The compact module is equipped with the MAX9814 amplifier chip, known for its precision and reliability. With a user-friendly design, it’s suitable for diverse applications, from voice recording to audio surveillance. The CMA-4544PF-W offers a reliable, compact, and efficient solution for integrating superior audio performance into electronic projects and devices.

Features:

Automatic Gain Control (AGC)

Programmable action time

Programmable action and release time ratio

Low-power shutdown mode

Built-in 2 Volt low noise microphone bias

Low Input-Referred Noise Density of 30nV/

Low THD: 0.04% (typical)

Descriptions:

1. with automatic gain control (AGC) and low-noise microphone bias.

2. The device has a front-end low noise amplifier, variable gain amplifier (VGA), output amplifier, microphone bias generator and AGC control circuit.

Specifications:

1. Automatic gain control (AGC)

2. 3 gain settings (40db, 50db, 60db)

3. Programmable action time

4. Programmable action and release time ratio

5. Current supply voltage range 2.7V ~ 5. 5V

6. low thd: 0.04% (typical)

7. low power shutdown mode

8. built-in 2v low noise microphone bias

Supply voltage: 2.7V-5.5V at 3mA current

-Output: 2vpp to 1.25v bias

-Frequency response: 20hz-20khz

-Programmable attack and release ratio

-Automatic gain, selectable max of 40db , 50db or 60db

-Low input referenced noise density of 30nv/

-Low thd: 0.04% (typ)