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NTE995 Datasheet(PDF) 1 Page - NTE Electronics

Part No. NTE995
Description  Integrated Circuit Frequency-to-Voltage Converter
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Maker  NTE [NTE Electronics]
Homepage  http://www.nteinc.com
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NTE995 Datasheet(HTML) 1 Page - NTE Electronics

   
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NTE995 & NTE995M
Integrated Circuit
Frequency–to–Voltage Converter
Description:
The NTE995 (14–Lead DIP) and NTE995M (8–Lead DIP) are monolithic frequency to voltage con-
verters with a high gain OP amp/comparator 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 tech-
nique and offers frequency doubling for low ripple, full input protection, and its output swings to GND
for a zero frequency input.
Advantages:
D Output Swing to GND for Zero Frequency Input
D Easy to Use: VOUT = fIN x VCC x R1 x C1
D Only One RC Network Provides Frequency Doubling
D Zener Regulator On Chip Allows Accurate and Stable Frequency to Voltage or Current Conversion
Features:
D Ground Referenced Tachometer Input Interfaces Directly with Variable Reluctance Magnetic
Pickups
D OP Amp/Comparator has Floating Transistor Output
D 50mA Sink or Source to Operate Relays, Solenoids, Meters, or LEDs
D Frequency Doubling for Low Ripple
D Tachometer has Built–In Hysteresis with Either Differential Input or Ground Referenced Input
D Built–In Zener Diode
D ±0.3% Linearity Typical
D Ground Referenced Tachometer is Fully Protected from damage Due to Swings Above VCC
and Below GND
Applications:
D Over/Under Speed Sensing
D Frequency to Voltage Conversion (Tachometer)
D Speedometers
D Breaker Point Dwell Meters
D Hand–Held Tachometer
D Speed Governors
D Cruise Control
D Automotive Door Lock Control
D Clutch Control
D Horn Control
D Touch or Sound Switches


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