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LM1971N from NS,National Semiconductor

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LM1971N

Manufacturer: NS

Digitally Controlled 62 dB Audio Attenuator with/Mute

Partnumber Manufacturer Quantity Availability
LM1971N NS 52 In Stock

Description and Introduction

Digitally Controlled 62 dB Audio Attenuator with/Mute The LM1971N is a digitally controlled audio attenuator manufactured by National Semiconductor (NS). Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:

### **Specifications:**
1. **Type:** Digitally Controlled Audio Attenuator  
2. **Channels:** 1 (Mono)  
3. **Attenuation Range:** 0 dB to -78 dB in 1 dB steps  
4. **Total Harmonic Distortion (THD):** <0.01% (typical)  
5. **Signal-to-Noise Ratio (SNR):** >110 dB  
6. **Supply Voltage Range:** ±4.5V to ±15V  
7. **Operating Temperature Range:** -40°C to +85°C  
8. **Package:** 14-Pin DIP (Dual Inline Package)  
9. **Interface:** Serial (3-wire SPI-compatible)  
10. **Mute Function:** Yes (software-controlled)  

### **Descriptions:**
- The LM1971N is a high-performance, digitally controlled audio attenuator designed for precision volume control in audio systems.  
- It provides accurate attenuation in 1 dB steps over a wide range (0 dB to -78 dB) with minimal distortion.  
- The device is compatible with standard serial interfaces, making it suitable for microprocessor-controlled applications.  

### **Features:**
1. **Low Distortion:** Ensures high-fidelity audio performance.  
2. **Wide Supply Voltage Range:** Supports ±4.5V to ±15V operation.  
3. **Serial Control Interface:** 3-wire SPI-compatible for easy integration.  
4. **Mute Capability:** Software-controlled mute function for additional flexibility.  
5. **High SNR:** >110 dB for clear audio output.  
6. **Robust Performance:** Operates reliably across a wide temperature range (-40°C to +85°C).  

This information is strictly based on the manufacturer's datasheet and technical documentation.

Application Scenarios & Design Considerations

Digitally Controlled 62 dB Audio Attenuator with/Mute

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