TC9400EJD

The Microchip Technology TC9400EJD is a low-cost, low-power CMOS integrated circuit designed for both Voltage-to-Frequency (V/F) and Frequency-to-Voltage (F/V) conversion.

This device accepts a variable analog input signal and generates an output pulse train with a frequency linearly proportional to the input voltage. Conversely, it can function as a highly accurate F/V converter, accepting various input frequency waveforms and providing a linearly proportional voltage output. A complete V/F or F/V system requires only the addition of two capacitors, three resistors, and a reference voltage.

Key electrical specifications include a maximum operating frequency of 100 kHz and a typical linearity of ±0.05%. The gain temperature stability is typically ±25 ppm/°C. It supports single supply operation from +8V to +15V or dual supply operation from ±4V to ±7.5V. The typical low power dissipation is 27 mW.

The TC9400EJD is housed in a 14-pin Ceramic DIP (CERDIP) package and is designed for through-hole mounting. It is suitable for applications such as microprocessor data acquisition, analog-to-digital converters, analog data transmission and recording, phase-locked loops, frequency meters, tachometers, motor control, and FM demodulation.