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