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LM4681SQ from NS,National Semiconductor

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LM4681SQ

Manufacturer: NS

10 Watt Stereo CLASS D Audio Power Amplifier with Stereo Headphone Amplifier and I2C/SPI Volume Control

Partnumber Manufacturer Quantity Availability
LM4681SQ NS 75 In Stock

Description and Introduction

10 Watt Stereo CLASS D Audio Power Amplifier with Stereo Headphone Amplifier and I2C/SPI Volume Control The LM4681SQ is a high-performance, dual-channel audio power amplifier manufactured by National Semiconductor (NS).  

### **Specifications:**  
- **Output Power:** 10W per channel (into 8Ω at 5V, THD+N = 10%)  
- **Supply Voltage Range:** 2.7V to 5.5V  
- **Total Harmonic Distortion + Noise (THD+N):** 0.1% (typical)  
- **Signal-to-Noise Ratio (SNR):** 100dB (typical)  
- **Efficiency:** Up to 90% (with Class D operation)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package Type:** 24-pin WQFN  

### **Descriptions:**  
- The LM4681SQ is a dual-channel Class D audio amplifier designed for portable and battery-powered applications.  
- It integrates a stereo speaker amplifier with differential inputs, eliminating the need for external coupling capacitors.  
- The device features a low-power consumption shutdown mode and thermal shutdown protection.  

### **Features:**  
- **Dual-Channel Class D Amplifier**  
- **No External Output Filters Required**  
- **Differential Inputs**  
- **Low Quiescent Current**  
- **Pop-and-Click Suppression Circuitry**  
- **Thermal and Short-Circuit Protection**  
- **Space-Saving WQFN Package**  

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

Application Scenarios & Design Considerations

10 Watt Stereo CLASS D Audio Power Amplifier with Stereo Headphone Amplifier and I2C/SPI Volume Control

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