Analog Devices Inc. AD8235 40μA Micropower Instrumentation Amplifier is available in a 1.5mm × 2.2mm wafer level chip scale package (WLCSP). The AD8235 draws a maximum quiescent current of 40μA. It also draws a maximum 500nA of current during shutdown mode. This makes it an excellent instrumentation amplifier for battery-powered, portable applications.