Micro-power, dual operational amplifier extends battery life and accuracy of portable devices

The AD8506 low-power CMOS dual operational amplifier with rail-to-rail inputs and output is designed for portable applications, including battery-powered patient monitors, remote sensors, handheld instrumentation and other mobile equipment that require precision measurement at low voltage levels with minimal power consumption. Featuring a novel circuit architecture, the AD8506 maintains high linearity by minimizing distortion through its power supplies and its inputs. Its 105-dB PSR minimizes errors caused by power supply voltage variations over a battery’s lifetime, making the AD8506 ideal for battery powered applications. Furthermore, the AD8506 maintains 105-dB CMR, maximizing linearity by minimizing the common-mode induced distortion often found in amplifiers having rail-to-rail inputs. While maintaining high linearity, the AD8506 consumes only 20 µA of supply current per amplifier—35 percent less than other operational amplifiers in its class.