NTE2051

The NTE2051 from NTE Electronics is a high-performance, low-power 3-1/2 digit A/D converter integrated circuit. It contains all essential active devices, including seven-segment decoders, display drivers, a reference, and a clock, on a single CMOS IC.

This converter offers high accuracy with features like auto-zero to less than 10µV and zero drift of less than 1µV/°C. It boasts a low input bias current of 10pA maximum and a roll-over error of less than one count. The true differential input and reference capabilities are advantageous for measuring bridge-type transducers like load cells and strain gauges.

The NTE2051 is designed to interface with a liquid crystal display (LCD) and includes a backplane drive. Its low power dissipation, typically less than 10mW, and the ability to operate from a single power supply (for the NTE2051 variant) enable the construction of high-performance panel meters with minimal external components (only 7 passive components and a display are needed).

Key features include guaranteed zero reading for 0 Volts input on all scales, true polarity at zero for precise null detection, and low noise of less than 15µVP-P. The on-chip clock and reference simplify design.