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LM4809LQ from NS,National Semiconductor

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LM4809LQ

Manufacturer: NS

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

Partnumber Manufacturer Quantity Availability
LM4809LQ NS 8428 In Stock

Description and Introduction

LM4809 Dual 105mW Headphone Amplifier with Active-Low Shutdown Mode The LM4809LQ is a dual 105mW headphone amplifier manufactured by National Semiconductor (NS).  

### **Specifications:**  
- **Type:** Dual audio amplifier  
- **Output Power:** 105mW per channel into 32Ω at 5V  
- **Supply Voltage Range:** 2.7V to 5.5V  
- **THD+N (Total Harmonic Distortion + Noise):** 0.1% (typical)  
- **Shutdown Current:** 0.1μA (typical)  
- **Operating Current:** 3.5mA (typical)  
- **Package:** 16-pin LLP (Leadless Leadframe Package)  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions and Features:**  
- Designed for portable audio applications such as mobile phones, PDAs, and portable media players.  
- Features an internal depop circuitry to reduce turn-on/off transients.  
- Independent shutdown control for each channel.  
- No output coupling capacitors required.  
- Improved power supply rejection ratio (PSRR) for noise reduction.  
- Unity-gain stable.  
- Space-saving LLP package for compact designs.  

This information is based on the manufacturer's datasheet. For detailed electrical characteristics and application circuits, refer to the official documentation.

Application Scenarios & Design Considerations

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

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