Data Sheet
NTE995 & NTE995M
Integrated Circuit
Frequency-to-Voltage Converter
Description:
The NTE995 (14-Lead DIP) and NTE995M (8-Lead DIP) are monolithic frequency to voltage converters 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 technique and offers frequency doubling for low ripple, full input protection, and its output swings to GND for a zero frequency input.
Advantages:
Output Swing to GND for Zero Frequency Input
Easy to Use: VOUT = fIN 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
Features:
Ground Referenced Tachometer Input Interfaces Directly with Variable Reluctance Magnetic
Pickups
OP Amp/Comparator has Floating Transistor Output
50mA Sink or Source to Operate Relays, Solenoids, Meters, or LEDs
Frequency Doubling for Low Ripple
Tachometer has Built-In Hysteresis with Either Differential Input or Ground Referenced Input
Built-In Zener Diode
±0.3% Linearity Typical
Ground Referenced Tachometer is Fully Protected from damage Due to Swings Above VCC
and Below GND
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
Touch or Sound Switches
Replaces:
ECG995
Additional Model #'s
76-NTE995
NTE995
UPC: 768249379119
