TC14433COG Datasheet PDF - Microchip

●GENERAL DESCRIPTION

●The TC14433 is a low power, high-performance, monolithic CMOS 3-1/2 digit A/D converter. The TC14433 combines both analog and digital circuits on a single IC, thus minimizing the number of external components. This dual slope A/D converter provides automatic polarity and zero correction with the addition of two external resistors and two capacitors. The full-scale voltage range of this ratiometric IC extends from 199.9 millivolts to 1.999 volts. The TC14433 can operate over a wide range of power supply voltages, including batteries and standard 5-volt supplies.

●FEATURES

●■ Accuracy ...................±0.05% of Reading ±1 Count

●■ Two Voltage Ranges .............1.999V and 199.9 mV

●■ Up to 25 Conversions Per Second

●■ ZIN> 1000M Ohms

●■ Single Positive Voltage Reference

●■ Auto-Polarity and Auto-Zero

●■ Overrange and Underrange Signals Available

●■ Operates in Auto-Ranging Circuits

●■ Uses On-Chip System Clock or External Clock

●■ Wide Supply Range .................... e.g., ±4.5V to ±8V

●■ Package Available .................................. 24-Pin DIP

●    24-Pin CerDIP, 28-Pin SOIC and 28-Pin PLCC

●APPLICATIONS

●■ Portable Instruments

●■ Digital Voltmeters

●■ Digital Panel Meters

●■ Digital Scales

●■ Digital Thermometers

●■ Remote A/D Sensing Systems

●■ MPU Systems

●■ See Application Notes 19 and 21