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LM4869MH from NS,National Semiconductor

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LM4869MH

Manufacturer: NS

1.9W Differential Input, BTL Output Stereo Audio Amplifier with Selectable Gain and Shutdown

Partnumber Manufacturer Quantity Availability
LM4869MH NS 30 In Stock

Description and Introduction

1.9W Differential Input, BTL Output Stereo Audio Amplifier with Selectable Gain and Shutdown The LM4869MH is a manufacturer by National Semiconductor (NS).  

### **Specifications:**  
- **Type:** Audio Power Amplifier  
- **Output Power:** 1.1W per channel (into 8Ω at 5V)  
- **Operating Voltage Range:** 2.0V to 5.5V  
- **THD+N (Total Harmonic Distortion + Noise):** 0.2% (typical at 1kHz, 1W into 8Ω)  
- **Shutdown Current:** 0.1μA (typical)  
- **Package:** 8-Pin SOIC (Small Outline Integrated Circuit)  
- **Gain:** Internally fixed at 6dB  
- **PSRR (Power Supply Rejection Ratio):** 60dB (typical)  

### **Descriptions:**  
The LM4869MH is a dual bridge-connected audio power amplifier designed for applications requiring low-voltage operation, such as portable devices. It provides high-quality audio output with low distortion and noise.  

### **Features:**  
- **Bridge-Tied Load (BTL) Configuration:** Eliminates the need for output coupling capacitors.  
- **Low Quiescent Current:** 4mA (typical).  
- **Thermal Shutdown Protection:** Prevents damage from overheating.  
- **No External Components Required for Operation:** Simplifies circuit design.  
- **Space-Saving Package:** 8-pin SOIC for compact PCB layouts.  
- **Improved PSRR:** Reduces power supply noise interference.  

This information is based on the manufacturer's datasheet.

Application Scenarios & Design Considerations

1.9W Differential Input, BTL Output Stereo Audio Amplifier with Selectable Gain and Shutdown

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