OPA660

The OPA660 is a versatile monolithic component designed for wide-bandwidth systems including high performance video, RF and IF circuitry. It includes a wideband, bipolar integrated voltage-controlled current source and voltage buffer amplifier.

The voltage-controlled current source or Operational Transconductance Amplifier (OTA) can be viewed as an "ideal transistor." Like a transistor, it has three terminals-a high-impedance input (base), a lowimpedance input/output (emitter), and the current output (collector). The OTA, however, is self-biased and bipolar. The output current is zero-for-zero differential input voltage. AC inputs centered about zero produce an output current which is bipolar and centered about zero. The transconductance of the OTA can be adjusted with an external resistor, allowing bandwidth, quiescent current and gain trade-offs to be optimized.

The open-loop buffer amplifier provides 850MHz bandwidth and 3000V/ms slew rate. Used as a basic building block, the OPA660 simplifies the design of AGC amplifiers, LED driver circuits for Fiber Optic Transmission, integrators for fast pulses, fast control loop amplifiers, and control amplifiers for capacitive sensors and active filters.

The OPA660 is packaged in SO-8 surface-mount, and 8-pin plastic DIP, specified from 40 to +85.