The document introduces a 20-bit linear, low-noise, precision single-polarity +10 V DC voltage source, using the AD5790 chip as a 20-bit voltage output DAC, which has high precision and low noise characteristics. The AD5790 is powered by a bipolar power supply, with an input voltage range of 5 V to VDD-2.5V and VSS+2.5 V to 0V. In addition, the document also introduces the use of the precision operational amplifier AD8675 as the output buffer to provide a stable output voltage.
This document describes a tested circuit design that creates a 20-bit linear, low-noise, precision unipolar +10 V DC voltage source. The design utilizes the Analog Devices AD5790 20-bit voltage output DAC and the AD8675 ultra-precision operational amplifier as an output buffer. It details how to configure the EVAL-AD5790SDZ evaluation board to achieve this specific performance.