CN-0257 is a reference circuit manual published by Analog Devices. This manual introduces the AD5790 true 20-bit voltage output DAC, AD8675 ultra-precision 36V, 2.8nV√Hz, rail-to-rail output operational amplifier, AD8676 ultra-precision 36V, 2.8nV√Hz, dual rail-to-rail output operational amplifier, 20-bit linear low noise precision unipolar +10V DC voltage source connections and applications.