FEATURES
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
Microchip Technology Inc. is a leading provider of microcontroller and analog semiconductors, providing low-risk product development, lower total system cost and faster time to market for thousands of diverse customer applications worldwide. Headquartered in Chandler, Arizona, Microchip offers outstanding technical support along with dependable delivery and quality.