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LM1815 from NS,National Semiconductor

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LM1815

Manufacturer: NS

Adaptive Variable Reluctance Sensor Amplifier

Partnumber Manufacturer Quantity Availability
LM1815 NS 74 In Stock

Description and Introduction

Adaptive Variable Reluctance Sensor Amplifier The LM1815 is a monolithic integrated circuit manufactured by National Semiconductor (NS). It is designed for use in automotive and industrial applications, specifically for processing signals from variable reluctance sensors (VRS).  

### **Specifications:**  
- **Supply Voltage Range:** 4.5V to 28V  
- **Operating Temperature Range:** -40°C to +85°C  
- **Input Signal Frequency Range:** 0Hz to 20kHz  
- **Output Current:** Up to 50mA (sink/source)  
- **Zero-Crossing Detector:** Adjustable threshold  
- **Built-in Voltage Regulator:** Provides stable 5V reference  
- **Package Options:** 8-pin DIP, SOIC  

### **Descriptions:**  
The LM1815 is an interface IC that processes signals from variable reluctance sensors, commonly used in speed and position detection systems. It includes signal conditioning, zero-crossing detection, and a comparator with hysteresis to improve noise immunity.  

### **Features:**  
- **Signal Conditioning:** Filters and amplifies weak sensor signals.  
- **Adjustable Threshold:** Allows fine-tuning for different sensor types.  
- **Noise Immunity:** Built-in hysteresis reduces false triggering.  
- **Wide Voltage Range:** Suitable for automotive and industrial environments.  
- **Open-Collector Output:** Compatible with digital logic circuits.  

The LM1815 is widely used in applications such as crankshaft position sensing, speed measurement, and tachometer systems.

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