LM2907M-8

monolithic frequency to voltage converter, 50 mA, 8-SOIC, 28V

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Price:: US $0.90~1.20 / piece [Get Latest Price]

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	US $0.90~1.20

PartNumber:: LM2907M-8

Brand:: National Semiconductor - NS | Pack: SOIC | D/C: 11+

Availability:: Supply Ability: 10000/Week Can Ship Immediately
Delivery: 10-15 Business Days (ships out within 3 Business days)

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Products Upload time: 2012-03-25

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Part Number:LM2907M-8
US $0.90 - 1.20
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Product Summary

The LM2907M-8 is a monolithic frequency to voltage converter with a high gain opamp/comparator designed to operate a relay, lamp, or other load when the input frequency reaches or exceeds a selected rate. The LM2907M-8 uses a charge pump technique and offers frequency doubling for low ripple, full input protection in two versions and its output swings to ground for a zero frequency input. The applications of the LM2907M-8 include 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 and Touch or sound switches.

Parametrics

LM2907M-8 absolute maximum ratings: (1)Supply Voltage: 28V; (2)Supply Current (Zener Options): 25 mA; (3)Collector Voltage: 28V; (4)Differential Input Voltage, Tachometer: 28V; Op Amp/Comparator: 28V; (5)Input Voltage Range, Tachometer: ±28V; Op Amp/Comparator: 0.0V to +28V; (6)Power Dissipation: 1200 mW; (7)Operating Temperature Range: -40 to +85℃; (8)Storage Temperature Range: -65 to +150℃; (9)Soldering Information, Dual-In-Line Package, Soldering (10 seconds): 260℃.

Features

LM2907M-8 features: (1)Ground referenced tachometer input interfaces directly with variable reluctance magnetic pickups; (2)Op amp/comparator has floating transistor output; (3)50 mA sink or source to operate relays, solenoids, meters, or LEDs; (4)Frequency doubling for low ripple; (5)Tachometer has built-in hysteresis with either differential input or ground referenced input; (6)Built-in zener on LM2917; (7)±0.3% linearity typical; (8)Ground referenced tachometer is fully protected from damage due to swings above VCC and below ground.