NTE2055 Datasheet | NTE Electronics

Description : The NTE2055 is a high performance, low power, 3 1/2 digit A/D converter bining both linear CMOS and digital CMOS circuits on a single monolithic IC. Available in a 24- Lead DIP type package, this device is designed to minimize use of external ponents. With two external resistors and two external capacitors, the system forms a dual slope A/D converter with automatic zero correction and automatic polarity. The NTE2055 is ratiometric and may be used over a full- scale range from 1.999V to 199.9m V. Systems using this device may operate over a wide range of power supply voltages for ease of use with batteries, or with standard 5V supplies. The output drive conforms with standard B- Series CMOS specifications and can drive a low- power Schottky TTL load. The high impedance MOS inputs allow applications in current and resistance meters as well as voltmeters. In addition to DVM/DPM applications, the NTE2055 finds use in digital thermometers, digital scales, remote A/D, A/D control systems, and in MPU systems. Features : D Accuracy: ±0.05% of Reading ±1 Count D Two Voltage Ranges: 1.999V and 199.9m V D Up to 25 Conversions /s D Zin > 100MΩ D Auto- Polarity and Auto- Zero D Single Positive Voltage Reference D Standard B- Series CMOS Outputs: Drives One Low Power Schottky Load D Uses On- Chip System Clock, or External Clock D Wide Supply Range: e.g., ±4.5V to ±8.0V D Overrange and Underrange Signals Available D Operates in Auto Ranging Circuits D Operates with LED and LCD Displays D Low External ponent Count D Chip plexity: 1326 FETs Absolute Maximum Ratings: DC Supply Voltage, VDD to VEE - - - - - - - - - - . . - 0.5V to +18V Voltage, Ant Pin, Referenced to VEE, V - - - - - - - - . . - 0.5V to VDD+0.5V DC Input Current, Per Pin, Iin - - - - - - - - - - ....