OPA686

The OPA686 combines very high gain bandwidth and large signal performance with very low input voltage noise while dissipating a low 12mA supply current. The classical differential input stage, along with two stages of forward gain and a high power output stage, combine to make the OPA686 an exceptionally low distortion amplifier with excellent DC accuracy and output drive. The voltage feedback architecture allows all standard op amp applications to be implemented with very high performance.

The combination of low input voltage and current noise, along with a 1.6GHz gain bandwidth product, make the OPA686 an ideal amplifier for wideband transimpedance stages. As a voltage gain stage, the device is optimized for a flat response at a gain of +10 and is guaranteed stable down to a noise gain of +7.

High Gain, 20MHz Transimpedance Amplifier TM A new external compensation technique can be used to give a very flat frequency response below the minimum stable gain for the OPA686, further improving its already exceptional distortion performance. Using this compensation makes the device one of the premier 12- to 14-bit analog-to-digital converter input drivers. The supply current for the OPA686 is precisely trimmed to 12.4mA at +25. This, along with carefully defined supply current tempcos in the input and output stages, combine to provide exceptional performance over the full specified temperature range.