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LM4900M from NS,National Semiconductor

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LM4900M

Manufacturer: NS

265mW at 3.3V Supply Audio Power Amplifier with Shutdown Mode

Partnumber Manufacturer Quantity Availability
LM4900M NS 145 In Stock

Description and Introduction

265mW at 3.3V Supply Audio Power Amplifier with Shutdown Mode The LM4900M is a power amplifier manufactured by National Semiconductor (NS). Here are its key specifications, descriptions, and features:

### **Specifications:**  
- **Supply Voltage Range:** 2.2V to 5.5V  
- **Output Power:** 1W (into 8Ω at 5V)  
- **Quiescent Current:** 3.5mA (typical)  
- **Total Harmonic Distortion (THD):** 0.2% (typical at 1kHz, 1W into 8Ω)  
- **Shutdown Current:** 0.1μA (typical)  
- **Gain Bandwidth Product:** 1MHz  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 8-pin SOIC  

### **Descriptions:**  
- The LM4900M is a mono bridged audio power amplifier designed for portable applications.  
- It operates from a single supply and requires minimal external components.  
- The device features a shutdown mode for power-saving operation.  

### **Features:**  
- **Bridged Output:** Eliminates the need for an output coupling capacitor.  
- **Low Quiescent Current:** Enhances battery life in portable devices.  
- **Thermal Protection:** Prevents damage due to overheating.  
- **Unity-Gain Stable:** Can be configured for different gain settings.  
- **Improved PSRR (Power Supply Rejection Ratio):** Reduces noise from the power supply.  

This information is based on the manufacturer's datasheet.

Application Scenarios & Design Considerations

265mW at 3.3V Supply Audio Power Amplifier with Shutdown Mode

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