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LM1973N from NS,National Semiconductor

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LM1973N

Manufacturer: NS

Micro-Pot 3-Channel 76 dB Audio Attenuator with Mute

Partnumber Manufacturer Quantity Availability
LM1973N NS 103 In Stock

Description and Introduction

Micro-Pot 3-Channel 76 dB Audio Attenuator with Mute The LM1973N is a digital volume control manufactured by National Semiconductor (NS).  

### **Specifications:**  
- **Type:** Digital Potentiometer  
- **Channels:** 2 (Stereo)  
- **Resistance:** 30 kΩ  
- **Attenuation Range:** 0 dB to -78 dB (1 dB steps)  
- **Mute Function:** Yes (≥ -100 dB)  
- **Interface:** Serial (3-wire SPI-compatible)  
- **Supply Voltage:** ±5V to ±15V  
- **THD (Total Harmonic Distortion):** <0.01%  
- **Signal-to-Noise Ratio (SNR):** >110 dB  
- **Package:** 16-Pin DIP  

### **Descriptions:**  
The LM1973N is a digitally controlled stereo audio attenuator designed for high-performance audio applications. It provides precise volume control with low distortion and noise, making it suitable for professional and consumer audio systems.  

### **Features:**  
- **Low Distortion:** Ensures high-fidelity audio output.  
- **Wide Supply Voltage Range:** Operates with dual supplies from ±5V to ±15V.  
- **Serial Control:** Simple 3-wire interface for easy integration.  
- **Mute Capability:** Fast mute function for noise-free operation.  
- **High SNR:** Maintains excellent signal clarity.  
- **Non-Volatile Memory (Optional):** Some variants support memory retention.  

This device is commonly used in audio amplifiers, mixing consoles, and other high-end audio equipment requiring precise digital volume control.

Application Scenarios & Design Considerations

Micro-Pot 3-Channel 76 dB Audio Attenuator with Mute

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