The LM2917M/NOPB, manufactured by Texas Instruments, is a monolithic frequency to voltage converter specifically designed for a wide range of applications. This integrated circuit (IC) is particularly well-suited for use in tachometers, frequency-to-voltage conversion, and motor speed control, among other uses.

Key Features

• Ground Referenced Tachometer Input: This feature allows for direct connection of the tachometer input to the ground for simplified circuit design and enhanced noise immunity.
• Operational Frequency Range: The LM2917M/NOPB operates over a frequency range of 0 Hz to 10 kHz, providing a wide operational window for various applications.
• Built-In Hysteresis: The inclusion of hysteresis in the frequency input enhances the stability of the output signal, making it less sensitive to input noise.
• Stable and Adjustable Zero: Users can adjust the zero to their specific needs, ensuring accurate and stable operation across different conditions.
• Non-Volatile Storage: The output is capable of driving either an NPN transistor or a standard LED for visual frequency indication without the need for external components.

Applications

The versatility of the LM2917M/NOPB makes it ideal for a broad range of applications, including:

• Automotive tachometers
• Frequency to voltage converters
• Vibration measurement
• Motor and fan speed control
• Process control instrumentation

Product Specifications

The LM2917M/NOPB comes in an 8-pin SOIC package, ensuring compatibility with standard surface-mount technology (SMT) processes. The device operates over a temperature range of -40°C to +125°C, making it reliable in various environmental conditions. It is also designed with a supply voltage range of 4.5V to 28V, providing flexibility in system power design.

Quality and Reliability

Texas Instruments ensures that the LM2917M/NOPB meets high standards of quality and reliability. The NOPB designation in the part number indicates that the product is lead-free (No Lead Plating), which makes it compliant with RoHS (Restriction of Hazardous Substances) regulations, ensuring environmental friendliness and suitability for use in a wide range of consumer and industrial markets.