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LM4900MMX from NS,National Semiconductor

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LM4900MMX

Manufacturer: NS

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

Partnumber Manufacturer Quantity Availability
LM4900MMX NS 65 In Stock

Description and Introduction

265mW at 3.3V Supply Audio Power Amplifier with Shutdown Mode The LM4900MMX is a power amplifier manufactured by National Semiconductor (NS).  

**Specifications:**  
- **Type:** Audio Power Amplifier  
- **Output Power:** 1.1W (into 8Ω at 5V)  
- **Supply Voltage Range:** 2.2V to 5.5V  
- **THD+N (Total Harmonic Distortion + Noise):** 1% (typical at 1kHz, 1W into 8Ω)  
- **Shutdown Current:** 0.01μA (typical)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 8-pin micro SMD (MSOP)  

**Descriptions:**  
- The LM4900MMX is a mono, bridged audio power amplifier designed for portable applications.  
- It features a low-power consumption shutdown mode.  
- The amplifier is optimized for driving speakers with minimal external components.  

**Features:**  
- **Bridged Output:** Eliminates the need for an output coupling capacitor.  
- **Low Quiescent Current:** 2.6mA (typical).  
- **Improved PSRR (Power Supply Rejection Ratio):** Reduces power supply noise.  
- **Unity-Gain Stable:** No external gain-setting resistors required.  
- **Short-Circuit and Thermal Protection:** Enhances reliability.  

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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