The OP-61 is a wide-bandwidth, precision operational amplifier designed to meet the requirements offast, precision instrumentation systems. The OP-61's combination of DCaccuracy with high bandwidth, fast slew rate and low noise, makes it unique among high-speed amplifiers. It is ideal for wideband systems requiring high signal-to-noise ratio, such as fast 12-16 bit data acquisition systems. The OP.61 maintains less than 3nV/v'HZ of input referred spot voltage noise over its closed-loop bandwidth.