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LM4931ITL from NS,National Semiconductor

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LM4931ITL

Manufacturer: NS

Audio Subsystem with Mono High Efficiency Loudspeaker and Stereo Headphone Amplifiers

Partnumber Manufacturer Quantity Availability
LM4931ITL NS 7750 In Stock

Description and Introduction

Audio Subsystem with Mono High Efficiency Loudspeaker and Stereo Headphone Amplifiers The LM4931ITL is a mono audio subsystem manufactured by National Semiconductor (NS).  

### **Specifications:**  
- **Type:** Mono Audio Subsystem  
- **Package:** 16-pin LLP (Leadless Leadframe Package)  
- **Output Power:** Up to 1.1W into 8Ω at 5V  
- **Supply Voltage Range:** 2.7V to 5.5V  
- **Efficiency:** Class D operation for reduced power consumption  
- **Signal-to-Noise Ratio (SNR):** >90dB  
- **Total Harmonic Distortion + Noise (THD+N):** <1%  
- **Features:**  
  - Integrated Class D speaker amplifier  
  - Stereo headphone amplifier  
  - Digital volume control  
  - I²C control interface  
  - Pop-and-click suppression circuitry  
  - Thermal and short-circuit protection  

### **Descriptions and Features:**  
The LM4931ITL is designed for portable audio applications, combining a mono Class D speaker amplifier and a stereo headphone amplifier in a single chip. It supports I²C digital control for volume and configuration adjustments. The device operates efficiently with low power consumption, making it suitable for battery-powered devices. It includes built-in protection features to prevent damage from overheating or short circuits. The pop-and-click suppression ensures smooth audio transitions during power-up and shutdown.  

For detailed electrical characteristics and application notes, refer to the official datasheet.

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