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LM4867 from NS,National Semiconductor

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LM4867

Manufacturer: NS

Output-Transient-Free Dual 2.1W Audio Amplifier Plus No Coupling Capacitor Stereo Headphone Function

Partnumber Manufacturer Quantity Availability
LM4867 NS 46 In Stock

Description and Introduction

Output-Transient-Free Dual 2.1W Audio Amplifier Plus No Coupling Capacitor Stereo Headphone Function The LM4867 is a dual bridge-connected audio power amplifier manufactured by National Semiconductor (NS).  

### **Specifications:**  
- **Output Power:**  
  - 1.1W per channel into 8Ω at 5V (THD+N = 10%)  
  - 700mW per channel into 8Ω at 3.3V (THD+N = 10%)  
- **Supply Voltage Range:** 2.0V to 5.5V  
- **THD+N (Total Harmonic Distortion + Noise):** 0.3% (typical at 1kHz, 1W into 8Ω)  
- **Shutdown Current:** 0.6μA (typical)  
- **Operating Current:** 4mA (typical)  
- **Gain:** Fixed at 6dB  
- **PSRR (Power Supply Rejection Ratio):** 60dB (typical)  
- **Package:** 8-pin SOIC, 8-pin LLP  

### **Descriptions:**  
The LM4867 is designed for battery-powered applications such as mobile phones, portable media players, and other handheld devices. It features a low-power shutdown mode and operates efficiently from a single supply voltage.  

### **Features:**  
- Dual bridge amplifier configuration  
- No output coupling capacitors required  
- Low shutdown current  
- Thermal shutdown protection  
- Improved click-and-pop suppression  
- Unity-gain stable  
- Short-circuit and over-temperature protection  

The LM4867 is optimized for space-constrained applications requiring high-quality audio output with minimal external components.

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