LM2917 Frequency to Voltage Converter IC - 10 Pack

Now available from PMD Way is the interesting LM2917 Frequency to Voltage Converter IC in packs of ten.

 

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.
 

Features

• Ground referenced tachometer input connects directly to variable reluctance magnetic pickups
• Op amp/comparator has floating transistor output
• 50 mA sink or source to switch relays, solenoids, meters, or LEDs
• Frequency doubling for low ripple
• Tachometer has built-in hysteresis with a choice of differential input or ground referenced input
• Built-in zener
• +/-0.3% linearity typical
• Ground referenced tachometer is fully protected from swings above VCC and below ground

Advantages

• Output swings to ground for zero frequency input 
• Simple to use VOUT = freq.IN x VCC x R1 x C1 
• Only one RC network provides frequency doubling 
• Zener regulator on chip allows accurate and stable frequency to voltage or current conversion

Applications

• Over/under speed sensing 
• Frequency to voltage conversion (tachometer) 
• Speedometers 
• Breaker point dwell meters 
• Hand-held tachometer 
• Speed governors 
• Cruise control 
• Automotive door lock control 
• Clutch control 
• Horn control 
• Y Touch or sound switches

More information:

• Download datasheet (.pdf).

Free delivery. Worldwide.