TC9402

TC9400/9401/9402 Voltage-to-Frequency/Frequency-to-Voltage Converters 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 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. 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 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 FR...