Wideband, Unity Gain Stable FET-Input Operational Amplifier

The OPA656 combines a wideband,

unity-gain stable, voltage-feedback operational amplifier with a low-noise junction

gate field-effect transistor (JFET) input stage to offer an ultra high dynamic-range

amplifier for transimpedance applications and high-speed data acquisition

front-ends. Extremely low dc errors give good precision in both optical applications

and test and measurement.

The

OPA656 features ultra-low input voltage noise (6nV/√Hz) to achieve a very low

integrated noise in transimpedance applications. The combination of high input

impedance and low input voltage noise makes the OPA656 an excellent wideband

transimpedance amplifier in optical test and communication equipment, as well as

medical and scientific instrumentation.

The OPA656 features a wide gain

bandwidth of 230MHz. The large-signal bandwidth of 150MHz and low distortion make

the OPA656 an excellent choice in high-speed digitizer front-ends, active probes,

and other test and measurement front ends.