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LM1875T. from NS,National Semiconductor

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LM1875T.

Manufacturer: NS

20-W Audio Power Amplifier

Partnumber Manufacturer Quantity Availability
LM1875T.,LM1875T NS 15 In Stock

Description and Introduction

20-W Audio Power Amplifier The LM1875T is a monolithic power amplifier from National Semiconductor (NS).  

### **Specifications:**  
- **Output Power:** 20W (into 4Ω or 8Ω loads at THD ≤ 10%)  
- **Supply Voltage Range:** 16V to 60V (split supply: ±8V to ±30V)  
- **Peak Output Current:** 4A  
- **Total Harmonic Distortion (THD):** ≤ 0.015% (1W, 1kHz)  
- **Signal-to-Noise Ratio (SNR):** ≥ 95dB  
- **Bandwidth:** 70kHz (typical)  
- **Gain Bandwidth Product:** 5.5MHz  
- **Slew Rate:** 8V/µs  
- **Input Impedance:** ~100kΩ  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** TO-220-5 (5-pin)  

### **Descriptions:**  
The LM1875T is a high-performance audio power amplifier capable of delivering up to 20W of continuous average power into an 8Ω load. It features low distortion, high slew rate, and wide bandwidth, making it suitable for high-fidelity audio applications. The device includes built-in protection circuits for thermal shutdown and output current limiting.  

### **Features:**  
- **High Output Power:** 20W into 4Ω or 8Ω loads  
- **Low Distortion:** THD ≤ 0.015%  
- **Wide Supply Voltage Range:** Supports split or single supplies  
- **Thermal Protection:** Automatic shutdown at high temperatures  
- **Short-Circuit Protection:** Prevents damage from output shorts  
- **Mute Function:** Available in some configurations  
- **Wide Bandwidth:** 70kHz typical  
- **High Slew Rate:** 8V/µs for improved transient response  

This information is based on the manufacturer's datasheet.

Application Scenarios & Design Considerations

20-W Audio Power Amplifier

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