TC9401

TC9400 TC9401 TC9402 VOLTAGE-TO-FREQUENCY/FREQUENCY-TO-VOLTAGE CONVERTERS FEATURES Voltage-to-Frequency s Choice of Guaranteed Linearity: TC9401 ......................................................... 0.01% TC9400 ......................................................... 0.05% TC9402 ......................................................... 0.25% DC to 100 kHz (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 1 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. 2 3 4 5 6 7 s s s s s Frequency-to-Voltage s s Operation ........................................... DC to 100 kHz Choice of Guaranteed Linearity: TC9401 ......................................................... 0.02% TC9400 ........................................................