Texas Instruments V/F and F/V Converters LM2907N-8

The LM2907N-8 is a monolithic frequency to voltage converter designed for applications requiring precise frequency measurement and conversion. It features a high gain op amp/comparator that can operate loads such as relays and lamps when the input frequency exceeds a specified threshold. The device utilizes a charge pump technique for frequency doubling, ensuring low ripple output and full input protection. This converter is equipped with a ground-referenced tachometer input that interfaces directly with variable reluctance magnetic pickups, and it can sink or source up to 50 mA to drive various loads. The output swings to ground for zero frequency input, enhancing its usability in speed sensing applications. The LM2907N-8 also includes a built-in Zener regulator for stable frequency to voltage conversion, making it suitable for a range of applications including speedometers, tachometers, and automotive control systems. Engineers may find this product beneficial for projects that require reliable frequency measurement and conversion with minimal external components.