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LM1972M from NSC,National Semiconductor

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LM1972M

Manufacturer: NSC

Micro-Pot 2-Channel 78 dB Audio Attenuator with Mute

Partnumber Manufacturer Quantity Availability
LM1972M NSC 253 In Stock

Description and Introduction

Micro-Pot 2-Channel 78 dB Audio Attenuator with Mute The LM1972M is a digitally controlled audio attenuator manufactured by National Semiconductor (NSC). Below are its specifications, descriptions, and features based on factual information:

### **Specifications:**
- **Manufacturer:** National Semiconductor (NSC)  
- **Type:** Digitally Controlled Audio Attenuator  
- **Package:** 20-Pin SOIC (LM1972M)  
- **Operating Voltage:** ±5V to ±15V  
- **Attenuation Range:** 0dB to -99dB (1dB steps)  
- **Total Harmonic Distortion (THD):** <0.01%  
- **Signal-to-Noise Ratio (SNR):** >110dB  
- **Channel Separation:** >100dB  
- **Control Interface:** Serial (SPI-compatible)  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions:**
- The LM1972M is a high-performance, digitally controlled stereo audio attenuator designed for professional and consumer audio applications.  
- It provides precise volume control with low distortion and high channel separation.  
- The device accepts a serial digital input for attenuation settings, making it suitable for microprocessor-controlled systems.  

### **Features:**
- **Low Distortion:** Ensures high-fidelity audio performance.  
- **Wide Voltage Range:** Operates from ±5V to ±15V supplies.  
- **Precise Attenuation:** 1dB steps from 0dB to -99dB.  
- **Serial Control Interface:** SPI-compatible for easy integration with microcontrollers.  
- **High Channel Separation:** Minimizes crosstalk between stereo channels.  
- **Mute Function:** Includes a software-controlled mute feature.  

This information is strictly based on the manufacturer's datasheet for the LM1972M.

Application Scenarios & Design Considerations

Micro-Pot 2-Channel 78 dB Audio Attenuator with Mute

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