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LM2917 from NSC,National Semiconductor

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LM2917

Manufacturer: NSC

Frequency to Voltage Converter

Partnumber Manufacturer Quantity Availability
LM2917 NSC 930 In Stock

Description and Introduction

Frequency to Voltage Converter The LM2917 is a frequency-to-voltage converter manufactured by National Semiconductor (NSC). Below are its specifications, descriptions, and features:  

### **Specifications:**  
- **Supply Voltage Range:** 3V to 28V  
- **Operating Temperature Range:** -40°C to +85°C  
- **Input Frequency Range:** 0Hz to 10kHz (typical)  
- **Output Voltage Range:** 0V to VCC - 2V  
- **Quiescent Current:** 3.6mA (typical)  
- **Output Drive Capability:** 50mA (max)  
- **Package Options:** DIP-8, SOIC-8  

### **Descriptions:**  
The LM2917 is a monolithic frequency-to-voltage converter with a built-in op-amp/comparator. It is designed to generate an output voltage proportional to the input frequency, making it useful in tachometer, speedometer, and other frequency-sensing applications.  

### **Features:**  
- **On-Chip Zener Regulator:** Provides stable operation over a wide supply range.  
- **High Output Drive:** Capable of driving loads up to 50mA.  
- **Built-in Op-Amp/Comparator:** Allows flexible signal conditioning.  
- **Wide Supply Range:** Operates from 3V to 28V.  
- **Temperature Stability:** Maintains accuracy across a wide temperature range.  

This information is based on the manufacturer's datasheet.

Application Scenarios & Design Considerations

Frequency to Voltage Converter
Partnumber Manufacturer Quantity Availability
LM2917 NS 100 In Stock

Description and Introduction

Frequency to Voltage Converter The LM2917 is a frequency-to-voltage converter manufactured by National Semiconductor (NS).  

### **Specifications:**  
- **Input Frequency Range:** 0Hz to 10kHz  
- **Supply Voltage Range:** 3.5V to 28V  
- **Output Voltage Swing:** Near rail-to-rail  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package Options:** DIP-8, SOIC-8  
- **Internal Zener Regulator:** Provides stable 7.56V reference (if used)  
- **Current Consumption:** Typically 2.5mA  

### **Descriptions:**  
The LM2917 converts an AC or digital frequency input into a proportional DC voltage output. It includes an internal charge pump circuit and a high-gain op-amp/comparator for signal conditioning.  

### **Features:**  
- **Frequency-to-Voltage Conversion**  
- **On-Chip Op-Amp/Comparator**  
- **Zener Diode for Voltage Regulation**  
- **Wide Supply Voltage Range**  
- **Single or Dual Supply Operation**  
- **Used in Tachometers, Speed Sensors, and RPM Measurement**  

For exact electrical characteristics, refer to the official datasheet.

Application Scenarios & Design Considerations

Frequency to Voltage Converter

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