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LM4809MAX from NSC,National Semiconductor

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LM4809MAX

Manufacturer: NSC

LM4809 Dual 105mW Headphone Amplifier with Active-Low Shutdown Mode

Partnumber Manufacturer Quantity Availability
LM4809MAX NSC 203 In Stock

Description and Introduction

LM4809 Dual 105mW Headphone Amplifier with Active-Low Shutdown Mode The LM4809MAX is a dual 105mW audio power amplifier manufactured by National Semiconductor (NSC).  

### **Specifications:**  
- **Output Power:** 105mW per channel into 16Ω at 5V  
- **Supply Voltage Range:** 2.7V to 5.5V  
- **Quiescent Current:** 3.6mA (typical)  
- **Shutdown Current:** 0.1μA (typical)  
- **Total Harmonic Distortion + Noise (THD+N):** 0.1% (typical) at 1kHz, 80mW into 16Ω  
- **PSRR (Power Supply Rejection Ratio):** 70dB (typical)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 8-pin SOIC (MAX suffix)  

### **Descriptions and Features:**  
- Dual-channel audio amplifier designed for portable applications.  
- No external coupling capacitors required (cap-less design).  
- Internal thermal shutdown protection.  
- Low shutdown current for power-saving operation.  
- Improved PSRR reduces noise from power supply variations.  
- Unity-gain stable, eliminating the need for external gain-setting resistors.  
- Suitable for headphone amplifiers and other low-power audio applications.  

This information is sourced from the manufacturer's datasheet.

Application Scenarios & Design Considerations

LM4809 Dual 105mW Headphone Amplifier with Active-Low Shutdown Mode

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