This document describes the features and performance of the Circuits from the Lab reference designs from Analog Devices. However, the user is responsible for testing and determining the suitability of the circuit for their specific use and application.
The CN-0405 is a reference design for a high-voltage DAC circuit that utilizes a button-controlled digital potentiometer to replace traditional high-voltage mechanical potentiometers. The circuit accepts a maximum input voltage of 20 V and provides a simple, efficient solution for adjusting high-voltage sources using a low-voltage digital potentiometer (AD5116) and a comparator (ADCMP371). The AD5116 features 64 wiper positions with a ±8% end-to-end resistance tolerance and includes an EEPROM for manual storage of wiper positions via a button. This manual is written in Chinese.