LM2917N-8

Product Overview

Category: Integrated Circuit (IC)

Use: Frequency-to-Voltage Converter

Characteristics: - Converts frequency signals into corresponding voltage outputs - Suitable for applications such as tachometers, speedometers, and frequency meters - Operates in a wide frequency range - Provides accurate and stable voltage output - Low power consumption

Package: DIP-8 (Dual In-line Package with 8 pins)

Essence: The LM2917N-8 is an integrated circuit designed to convert frequency signals into proportional voltage outputs. It is commonly used in various electronic devices that require frequency measurement and conversion.

Packaging/Quantity: Available in standard packaging with a quantity of 25 units per tube.

Specifications

The LM2917N-8 has the following specifications:

• Supply Voltage Range: 4V to 18V
• Frequency Input Range: 0Hz to 10kHz
• Voltage Output Range: 0V to VCC
• Temperature Range: -40°C to +85°C
• Non-Linearity Error: ±0.2% (typical)
• Total Harmonic Distortion: <1% (typical)
• Output Impedance: 100Ω (typical)

Pin Configuration

The LM2917N-8 has a total of 8 pins arranged as follows:

```

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| | --|1 8 |-- VCC --|2 7 |-- GND --|3 6 |-- VOUT --|4 5 |-- FIN |___________| ```

Pin Description: 1. VCC: Positive supply voltage input 2. GND: Ground reference 3. VOUT: Voltage output proportional to the input frequency 4. FIN: Frequency input

Functional Features

• High accuracy frequency-to-voltage conversion
• Wide operating frequency range allows for versatile applications
• Low power consumption ensures energy efficiency
• Stable voltage output for reliable measurements
• Compact and easy-to-use integrated circuit design

Advantages and Disadvantages

Advantages: - Accurate and stable frequency-to-voltage conversion - Wide frequency range for versatile applications - Low power consumption - Compact and easy to integrate into electronic circuits

Disadvantages: - Limited output voltage range (0V to VCC) - Non-linearity error may affect precision in some applications - Sensitivity to noise and interference

Working Principles

The LM2917N-8 operates based on the principle of frequency-to-voltage conversion. It converts the input frequency signal applied to the FIN pin into a proportional voltage output at the VOUT pin. The internal circuitry of the IC processes the input frequency and generates an output voltage that is directly proportional to the input frequency.

Detailed Application Field Plans

The LM2917N-8 finds application in various fields, including:

1. Automotive Industry:

   • Tachometers: Converts engine RPM (Revolutions Per Minute) into voltage signals for display or further processing.
   • Speedometers: Measures vehicle speed by converting wheel rotation frequency into voltage outputs.

2. Industrial Automation:

   • Frequency Meters: Converts electrical signal frequencies into corresponding voltage levels for monitoring and control purposes.

3. Audio Equipment:

   • Tone Generators: Converts audio frequency signals into voltage outputs for generating specific tones or musical notes.

4. Test and Measurement Instruments:

   • Frequency Analyzers: Converts input frequency signals into voltage outputs for analysis and measurement purposes.

Detailed and Complete Alternative Models

Some alternative models to the LM2917N-8 include:

1. LM2907: Similar frequency-to-voltage converter IC with a different pin configuration.
2. LM331: Voltage-to-Frequency Converter IC, which performs the opposite function of the LM2917N-8.
3. XR4151: Precision Frequency-to-Voltage Converter IC with enhanced features and accuracy.

These alternative models offer similar functionality but may have different specifications and pin configurations. It is important to select the appropriate model based on specific application requirements.

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