AD2020

The AD2020 is a low cost 3 digit AID Converter, needing only 10 additional support components to make a complete 3 digit DPM/DVM. The small total component count, the low cost, and high reliability allow for a wide variation in display applications, especially those previously utilizing APM's (Analog Panel Meters).

The technology utilized in the AD2020 is Integrated Injection Logic (I²L), an extension of the long proven, high yield bipolar process. This technique offers a significantly higher circuit packing density. The input amplifier, comparator, band-gap reference, counters, clock, control logic, multiplexer and drivers needed to implement the dual slope conversion, are all included on a single die.

The AD2020, although it has an internal reference, consumes only SOmWof power and is operated from a single +5V supply, unlike most DPM chips requiring two (2) supplies. The DPM chip is packaged in a standard size 16 pin-dual-in-line package. Utilizing a unique double passivation and noble-metal interconnect scheme, this plastic package offers essentially hermetic performance over a wide temperature range. The chip is available in two versions with differing guaranteed operating temperature ranges. The standard AD2020 is specified from 0 to +75°C and because of the special packaging technique, an extended temperature version is also available upon request.