This document describes the features and characteristics of the KA331 V-F converter from Fairchild Semiconductor Corporation, including guaranteed linearity, low power dissipation, wide range of full-scale frequency, and compatibility with all logic forms. The converter provides an output pulse train at a frequency precisely proportional to the applied input voltage and is suitable for various applications such as analog-to-digital conversion, frequency-to-voltage conversion, and linear frequency modulation or demodulation.
The KA331 is a voltage‑to‑frequency converter that outputs a pulse train whose frequency is precisely proportional to the applied input voltage. It operates from low supply voltages (as low as 4 V) and can generate frequencies from 1 Hz up to 100 kHz, making it suitable for simple analog‑to‑digital conversion and other applications.
Key specifications include a guaranteed linearity of 0.01 % max, low power dissipation (15 mW at 5 V), a wide dynamic range of 100 dB at 10 kHz, and operation over a temperature range of 0 °C to +70 °C. The datasheet also lists mechanical dimensions for the 8‑DIP package and ordering information.
| Supply Voltage | 40 V |
|---|---|
| Input Voltage Range | -0.2 V to VCC |
| Operating Temperature Range | 0 °C to +70 °C |
| Power Dissipation | 500 mW |
| Full‑Scale Frequency Range | 1 Hz to 100 kHz |
| Linearity | 0.01 % max |
| Dynamic Range | 100 dB min at 10 kHz |
The KA331 can be powered with up to 40 V supply voltage.
It operates from 0 °C up to +70 °C.
The device provides a full‑scale frequency from 1 Hz to 100 kHz.
It guarantees a linearity of 0.01 % maximum.