ADA4528-1 & ADA4528-2 Precision Zero-Drift Op Amps Analog Devices Inc. ADA4528-1 and ADA4528-2 Precision Zero-Drift Operational Amplifiers feature rail-to-rail input and output swing. Offering an offset voltage of 2.5μV, offset voltage drift of 0.015μV/°C, and typical noise of 97nVp-p (0.1Hz to 10Hz, AV = +100), the ADA4528-1/ADA4528-2 op amps are well suited for applications in which error sources cannot be tolerated.