LMH6645/46/47,pdf datasheet (A

The LMH™6645 (single) and LMH6646 (dual), rail-to-rail
input and output voltage feedback amplifiers, offer high
speed (55MHz), and low voltage operation (2.7V) in addition
to micro-power shutdown capability (LMH6647, single).
Input common mode voltage range exceeds either supply by
0.3V, enhancing ease of use in multitude of applications
where previously only inferior devices could be used. Output
voltage range extends to within 20mV of either supply rails,
allowing wide dynamic range especially in low voltage applications.
Even with low supply current of 650μA/amplifier,
output current capability is kept at a respectable ±20mA for
driving heavier loads. Important device parameters such as
BW, Slew Rate and output current are kept relatively independent
of the operating supply voltage by a combination of
process enhancements and design architecture.