LM2907 and LM2917 Frequency to Voltage Converter

1 Features 1• Ground Referenced Tachometer Input Interfaces Directly With Variable Reluctance Magnetic Pickups • Op Amp Has Floating Transistor Output • 50-mA Sink or Source to Operate Relays, Solenoids, Meters, or LEDs • Frequency Doubling For Low Ripple • Tachometer Has Built-In Hysteres

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LM2907/LM2917 Frequency to Voltage Converter

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Frequency to Voltage Converter

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对地负载或电源负载高达 50mA 的频压转换器（带齐纳稳压器）

The LM2907 and LM2917 devices are monolithic frequency-to-voltage converters with a high gain op amp designed to operate 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, • Ground Referenced Tachometer Input Interfaces Directly With Variable Reluctance Magnetic Pickups\n• Op Amp Has Floating Transistor Output\n• 50-mA Sink or Source to Operate Relays, Solenoids, Meters, or LEDs\n• Frequency Doubling For Low Ripple\n• Tachometer Has Built-In Hysteresis With Either Dif;

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