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LM4889MA from NS,National Semiconductor

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LM4889MA

Manufacturer: NS

1 Watt Audio Power Amplifier

Partnumber Manufacturer Quantity Availability
LM4889MA NS 5700 In Stock

Description and Introduction

1 Watt Audio Power Amplifier The LM4889MA is a dual audio power amplifier manufactured by National Semiconductor (NS).  

### **Specifications:**  
- **Supply Voltage Range:** 2.7V to 5.5V  
- **Output Power:** 1.1W per channel into 8Ω at 5V (THD+N = 10%)  
- **Quiescent Current:** 4mA  
- **Shutdown Current:** 0.6μA  
- **Total Harmonic Distortion + Noise (THD+N):** 0.2% (typical)  
- **PSRR (Power Supply Rejection Ratio):** 70dB (typical)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 8-pin SOIC (MA)  

### **Descriptions:**  
- The LM4889MA is designed for portable audio applications such as mobile phones, PDAs, and portable media players.  
- It features a low-power consumption shutdown mode.  
- The amplifier is unity-gain stable and does not require external compensation.  

### **Features:**  
- Dual-channel audio power amplifier  
- Improved PSRR for noise reduction  
- No output coupling capacitors required  
- Internal thermal shutdown protection  
- Space-saving SOIC package  

This information is based on the manufacturer's datasheet.

Application Scenarios & Design Considerations

1 Watt Audio Power Amplifier

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