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LM1875T+ from NSC,National Semiconductor

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LM1875T+

Manufacturer: NSC

20-W Audio Power Amplifier

Partnumber Manufacturer Quantity Availability
LM1875T+,LM1875T NSC 99 In Stock

Description and Introduction

20-W Audio Power Amplifier The LM1875T+ is a monolithic power amplifier manufactured by National Semiconductor (NSC). Below are its specifications, descriptions, and features:

### **Specifications:**  
- **Output Power:**  
  - 20W (into 4Ω at ±25V)  
  - 30W (into 8Ω at ±30V)  
- **Operating Voltage Range:** ±8V to ±30V  
- **Output Current:** 4A (peak)  
- **Total Harmonic Distortion (THD):** 0.015% (typical at 1kHz, 20W)  
- **Signal-to-Noise Ratio (SNR):** >95dB  
- **Bandwidth:** 70kHz  
- **Slew Rate:** 8V/µs  
- **Input Impedance:** ~5MΩ  
- **Gain Bandwidth Product:** 5.5MHz  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** TO-220-5  

### **Description:**  
The LM1875T+ is a high-performance audio power amplifier capable of delivering up to 30W of continuous average output power into an 8Ω load. It features a wide supply voltage range, low distortion, and high noise rejection, making it suitable for high-fidelity audio applications.  

### **Features:**  
- **Short-Circuit Protection:** Includes thermal shutdown and current limiting.  
- **Mute Function:** Allows for smooth power-on/off transitions.  
- **Low Distortion:** Ensures high-quality audio output.  
- **Wide Supply Range:** Operates from ±8V to ±30V.  
- **Thermal Protection:** Prevents overheating.  
- **Easy to Use:** Requires minimal external components.  

This amplifier is commonly used in stereo systems, home theaters, and professional audio equipment.

Application Scenarios & Design Considerations

20-W Audio Power Amplifier

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