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LM4938MH from NS,National Semiconductor

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LM4938MH

Manufacturer: NS

Stereo 2W Audio Power Amplifiers with DC Volume Control and Selectable Gain

Partnumber Manufacturer Quantity Availability
LM4938MH NS 10403 In Stock

Description and Introduction

Stereo 2W Audio Power Amplifiers with DC Volume Control and Selectable Gain The LM4938MH is a manufacturer by National Semiconductor (NS). Here are its specifications, descriptions, and features:

### **Specifications:**
- **Type:** Audio Power Amplifier  
- **Package:** 28-Pin LLP (Leadless Leadframe Package)  
- **Operating Voltage Range:** 2.7V to 5.5V  
- **Output Power:** Up to 1.1W per channel (into 8Ω at 5V)  
- **Number of Channels:** 2 (Stereo)  
- **THD+N (Total Harmonic Distortion + Noise):** 0.1% (typical)  
- **Signal-to-Noise Ratio (SNR):** 90dB (typical)  
- **Shutdown Current:** <1μA (typical)  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions:**
The LM4938MH is a stereo audio power amplifier designed for portable applications such as smartphones, tablets, and portable media players. It features a low-voltage operation, making it suitable for battery-powered devices. The device includes an integrated boost converter to enhance output power efficiency.

### **Features:**
- **Stereo Class D Speaker Amplifier**  
- **Integrated Boost Converter** for improved efficiency  
- **Low Quiescent Current** for extended battery life  
- **Pop & Click Suppression** circuitry  
- **Short-Circuit and Thermal Protection**  
- **I²C Control Interface** for volume and shutdown functions  
- **Space-Saving LLP Package**  

This information is based on National Semiconductor's datasheet for the LM4938MH.

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