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LM4854MTX

1.9W Monaural, 85mW Stereo Headphone Audio Amplifier

Partnumber Manufacturer Quantity Availability
LM4854MTX 7194 In Stock

Description and Introduction

1.9W Monaural, 85mW Stereo Headphone Audio Amplifier The LM4854MTX is a mono bridged audio power amplifier manufactured by Texas Instruments. Below are its key specifications, descriptions, and features:

### **Specifications:**  
- **Output Power:**  
  - 3W into 4Ω at 5V (THD+N = 10%)  
  - 2.1W into 8Ω at 5V (THD+N = 10%)  
- **Supply Voltage Range:** 2.7V to 5.5V  
- **Quiescent Current:** 3.5mA (typical)  
- **Shutdown Current:** 0.1μA (typical)  
- **Total Harmonic Distortion + Noise (THD+N):** 0.3% (typical at 1kHz, 1W into 4Ω)  
- **Efficiency:** Up to 87%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 16-pin TSSOP (MTX)  

### **Descriptions:**  
- The LM4854MTX is a mono, bridge-tied load (BTL) audio amplifier designed for portable applications such as mobile phones and PDAs.  
- It features a low-power shutdown mode and requires minimal external components.  
- The device includes thermal shutdown and short-circuit protection.  

### **Features:**  
- **Bridged Output:** Eliminates the need for output coupling capacitors.  
- **Low Quiescent Current:** Enhances battery life in portable devices.  
- **Shutdown Mode:** Reduces power consumption when not in use.  
- **Thermal & Short-Circuit Protection:** Improves reliability.  
- **Pop-and-Click Suppression:** Minimizes audible noise during power-up/down.  
- **Space-Saving Package:** 16-pin TSSOP suitable for compact designs.  

This information is sourced from the official Texas Instruments datasheet for the LM4854MTX.

Application Scenarios & Design Considerations

1.9W Monaural, 85mW Stereo Headphone Audio Amplifier

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