LM2917 Frequency to Voltage Converter Z2640

LM2917 Frequency to Voltage Converter

The LM2917 is a monolithic frequency to voltage converter with a high gain op amp/comparator designed to switch a relay, lamp, or other load when the input frequency reaches or exceeds a selected rate.
The tachometer uses a charge pump technique and offers frequency doubling for low ripple, full input protection as the output swings to ground for a zero frequency input.