The HT4040BRTZ is an operational amplifier manufactured by HTCSEMI, with an SOT-23-5 package. It is a low noise, rail-to-rail input/output, single supply amplifier designed to meet the low power requirements of portable applications including mobile devices and notebooks. The amplifier has a guaranteed wide voltage range from 2.7V to 18V with ±1.0V at the output. It features low supply current (32µA typ, 80µA max.) and low offset voltage (250µV max.). Other features of the device include low noise (2.5nV/vHz typ), fast response time (35ns typ), low distortion (0.02% typ.), and stable output (180MHz GBW). The device is RoHS compliant.