The OPA680 represents a major step forward in unity gain
stable, voltage feedback op amps. A new internal architecture
provides slew rate and full power bandwidth previously
found only in wideband current feedback op amps. A new
output stage architecture delivers high currents with a minimal
headroom requirement. These combine to give exceptional
single supply operation. Using a single +5V supply,
the OPA680 can deliver a 1V to 4V output swing with over
100mA drive current and 150MHz bandwidth. This combination
of features makes the OPA680 an ideal RGB line
driver or single supply ADC input driver.
The OPA680’s low 6.4mA supply current is precisely
trimmed at 25°C. This trim, along with low temperature
drift, guarantees lower maximum supply current than competing
products. System power may be reduced further using
the optional disable control pin. Leaving this disable pin
open, or holding it high, will operate the OPA680 normally.
If pulled low, the OPA680 supply current drops to less than
300mA while the output goes to a high impedance state. This
feature may be used for either power savings or to implement
video MUX applications.