General Description
The TC9400/TC9401/TC9402 are low cost voltage-to-frequency (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.

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