The OPA659IDRBT is a very wideband unity-gain stable voltage-feedback Operational Amplifier with a JFET-input stage to offer an ultra-high dynamic range amplifier for high impedance buffering in data acquisition applications such as oscilloscope front-end amplifier and machine vision applications such as photodiode transimpedance amplifier used in wafer inspection. The wide 650MHz unity-gain bandwidth is complemented by a very high 2550V/μs slew rate. The high input impedance and low bias current provided by the JFET input are supported by the low 8.9nV/√Hz input voltage noise to achieve a very low integrated noise in wideband photodiode transimpedance applications. Broad transimpedance bandwidth is possible with the high 350MHz gain bandwidth product of this device.