Microchip TC9400CPD

Вольт к частоте и частота к вольтам100 кГц±40ppm/°C

Overview

General Description The TC9400/TC9401/TC9402 are low cost voltage-tofrequency (V/F) converters, utilizing low power CMOS technology. The converters accept a variable analog input signal and generate an output pulse train, whose frequency is linearly proportional to the input voltage. The devices can also be used as highly accurate frequency-to-voltage (F/V) converters, accepting virtually any input frequency waveform and providing a linearly proportional voltage output. A complete V/F or F/V system only requires the addition of two capacitors, three resistors, and reference voltage. Features VOLTAGE-TO-FREQUENCY • Choice of Linearity - TC9401: 0.01% - TC9400: 0.05% - TC9402: 0.25% • DC to 100kHz (F/V) or 1Hz to 100kHz (V/F) • Low Power Dissipation: 27mW (Typ.) • Single/Dual Supply Operation - +8V to +15V or ±4V to ±7.5V • Gain Temperature Stability: ±25 ppm/°C (Typ.) • Programmable Scale Factor FREQUENCY-TO-VOLTAGE • Operation: DC to 100kHz • Choice of Linearity - TC9401: 0.02% - TC9400: 0.05% - TC9402: 0.25% • Programmable Scale Factor Applications • µP Data Acquisition • 13-bit Analog-to-Digital Converters • Analog Data Transmission and Recording • Phase Locked Loops • Frequency Meters/Tachometer • Motor Control • FM Demodulation

Features

Applications

• Frequency-to-Voltage Conversion (Tachometer)
• Speedometers
• Breaker Point Dwell Meters
• Hand-Held Tachometers
• Speed Governors
• Cruise Control
• Automotive Door L ock Control
• Clutch Control
• Horn Control
• Touch or Sound Switches