Microchip Technology TC9402
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.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
GENERAL DESCRIPTION
A complete V/F or F/V system only requires the addition of two capacitors, three resistors, and reference voltage. FREQUENCY-TO-VOLTAGE● Operation: DC to 100kHz
● Choice of Linearity - TC9401: 0.02% - TC9400: 0.05% - TC9402: 0.25%
● Programmable Scale Factor Package Type 14-Pin Plastic DIP/CERDIP IBIAS 1 ZERO ADJ 2 IIN 3 VSS 4 VREF OUT 5 GND 6 VREF 7 14 VDD 13 NC
APPLICATIONS
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● µP Data Acquisition 13-bit Analog-to-Digital Converters Analog Data Transmission and Recording Phase Locked Loops Frequency Meters/Tachometer Motor Control FM Demodulation TC9400 TC9401 TC9402 12 AMPLIFIER OUT THRESHOLD 11 DETECTOR 10 FREQ/2 OUT 9 OUTPUT COMMON 8 PULS...