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LM4838MTEX from NS/PBF,National Semiconductor

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LM4838MTEX

Manufacturer: NS/PBF

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

Partnumber Manufacturer Quantity Availability
LM4838MTEX NS/PBF 269 In Stock

Description and Introduction

Stereo 2W Audio Power Amplifiers with DC Volume Control and Selectable Gain The LM4838MTEX/NOPB is a stereo audio power amplifier manufactured by Texas Instruments. Here are its specifications, descriptions, and features:

### **Specifications:**  
- **Manufacturer:** Texas Instruments  
- **Type:** Stereo Audio Power Amplifier  
- **Package:** TSSOP-28  
- **Operating Voltage Range:** 2.7V to 5.5V  
- **Output Power:**  
  - 1.1W per channel into 8Ω at 5V (THD+N = 10%)  
  - 325mW per channel into 32Ω at 3.3V (THD+N = 1%)  
- **Total Harmonic Distortion + Noise (THD+N):** 0.1% (typical)  
- **Signal-to-Noise Ratio (SNR):** 95dB (typical)  
- **Shutdown Current:** 0.01μA (typical)  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions:**  
The LM4838MTEX/NOPB is a low-voltage, high-performance stereo audio amplifier designed for portable applications. It features a bridge-tied load (BTL) configuration, eliminating the need for output coupling capacitors. The device includes volume control, selectable gain settings, and a shutdown mode for power savings.  

### **Features:**  
- **Stereo BTL Outputs** – Eliminates the need for external coupling capacitors.  
- **Volume Control** – Adjustable via an external resistor.  
- **Selectable Gain** – Configurable gain settings (6dB, 9dB, 12dB, 15dB).  
- **Low Power Consumption** – Efficient operation for battery-powered devices.  
- **Thermal & Short-Circuit Protection** – Built-in safeguards for reliability.  
- **Shutdown Mode** – Ultra-low current consumption when inactive.  
- **Surface-Mount Package** – TSSOP-28 for compact PCB designs.  

This information is based solely on the manufacturer's datasheet.

Application Scenarios & Design Considerations

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

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