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LM4914MH from NS,National Semiconductor

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LM4914MH

Manufacturer: NS

1W Monaural, 85mW Stereo Headphone Audio Amplifier

Partnumber Manufacturer Quantity Availability
LM4914MH NS 1469 In Stock

Description and Introduction

1W Monaural, 85mW Stereo Headphone Audio Amplifier The LM4914MH is a mono bridged audio power amplifier manufactured by National Semiconductor (NS).  

### **Specifications:**  
- **Output Power:** 1.1W into 8Ω at 5V (THD+N = 1%)  
- **Supply Voltage Range:** 2.2V to 5.5V  
- **Shutdown Current:** 0.01µA (typical)  
- **Quiescent Current:** 2.2mA (typical)  
- **THD+N:** 0.2% (typical at 1kHz, 1W into 8Ω)  
- **PSRR:** 70dB (typical at 217Hz)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 14-Pin LLP (Leadless Leadframe Package)  

### **Descriptions:**  
- The LM4914MH is designed for portable audio applications.  
- It features a bridge-tied load (BTL) configuration, eliminating the need for an output coupling capacitor.  
- Includes an internal thermal shutdown protection mechanism.  
- Optimized for low-voltage operation, making it suitable for battery-powered devices.  

### **Features:**  
- **Bridged Output:** No external DC-blocking capacitor required.  
- **Low Quiescent Current:** Enhances battery life.  
- **Shutdown Mode:** Minimizes power consumption when inactive.  
- **Improved PSRR:** Reduces noise from power supply variations.  
- **Thermal Protection:** Prevents damage from overheating.  

This information is based on the manufacturer's datasheet for the LM4914MH.

Application Scenarios & Design Considerations

1W Monaural, 85mW Stereo Headphone Audio Amplifier

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