The HT2604BRZ is an ultra-low noise, low-power operational amplifier SOP-8 manufactured by HTCSEMI. It features an operating voltage range of 2.7-6V, output current up to 200mA, a small signal bandwidth of 5.5MHz, a PSRR of 80dB, an AOIP of -115dB, and a supply current of 0.4mA. The device is specifically designed to meet the requirements of low power audio applications, and includes a rail-to-rail input and output stage to accommodate a wider dynamic range and output capability. This device is RoHS compliant and offers a -40°C to 85°C operating temperature range.