LM331A - National Semiconductor

LM331A Precision Voltage-to-Frequency Converters

The LM131 LM231 LM331 family of voltage-to-frequency converters are ideally suited for use in simple low-cost circuits for analog-to-digital conversion precision frequencyto-voltage conversion long-term integration linear frequency modulation or demodulation and many other functions The output when used as a voltage-to-frequency converter is a pulse train at.

Features

Y Y Y Y Y Y Y Y Y Y Guaranteed linearity 0 01% max Improved performance in existing voltage-to-frequency conversion applications Split or single supply operation Operates on single 5V supply Pulse output compatible with all logic forms Excellent temperature stability g 50 ppm C max Low power dissipation 15 mW typical at 5V Wide dynamic range 100 dB min at 10 kHz full scale frequency Wide range of full scale frequency 1 Hz to 100 kHz Low cost Typical Applications fOUT e VIN R 1  S 2 09 V RL RtCt TL H 5680
  – 1 Use stable components with low temperature coefficients See Typical Applicat.