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MAX9812LEXT-T from MAXIM,MAXIM - Dallas Semiconductor

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MAX9812LEXT-T

Manufacturer: MAXIM

Tiny / Low-Cost / Single/Dual-Input / Fixed-Gain Microphone Amplifiers with Integrated Bias

Partnumber Manufacturer Quantity Availability
MAX9812LEXT-T,MAX9812LEXTT MAXIM 50000 In Stock

Description and Introduction

Tiny / Low-Cost / Single/Dual-Input / Fixed-Gain Microphone Amplifiers with Integrated Bias The MAX9812LEXT-T is a microphone amplifier with automatic gain control (AGC) and low-noise microphone bias, manufactured by Maxim Integrated (now part of Analog Devices).  

### **Specifications:**  
- **Supply Voltage Range:** 2.7V to 5.5V  
- **Quiescent Current:** 525µA (typical)  
- **Gain Range:** Adjustable from 40dB to 60dB  
- **AGC Threshold:** Adjustable via external resistor  
- **Microphone Bias Voltage:** 2V (typical)  
- **Output Noise:** 30µV RMS (typical)  
- **THD+N:** 0.04% (typical)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 6-pin TDFN (2mm x 2mm)  

### **Descriptions:**  
The MAX9812LEXT-T is designed for low-voltage microphone applications, featuring an integrated AGC to maintain consistent output levels under varying input conditions. It includes a low-noise microphone bias and provides high gain with low distortion, making it suitable for portable audio devices, voice recorders, and communication systems.  

### **Features:**  
- Automatic Gain Control (AGC) with adjustable threshold  
- Low-noise microphone bias (2V typical)  
- Adjustable gain (40dB to 60dB)  
- Low quiescent current (525µA)  
- Wide supply voltage range (2.7V to 5.5V)  
- Small 6-pin TDFN package  
- Low output noise (30µV RMS)  
- Low THD+N (0.04%)  

This device is optimized for battery-powered applications where maintaining consistent audio levels is critical.

Application Scenarios & Design Considerations

Tiny / Low-Cost / Single/Dual-Input / Fixed-Gain Microphone Amplifiers with Integrated Bias

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