2.2 MHz GBW at 950 µA — the LinCMOS™ trade-off
The TLC271ID: The CMOS input stage gives a typical input bias current of 0.7 pA. The input offset voltage is specified at 1.1 mV.
Where the picoamp bias matters
The 0.7 pA input bias current is the standout feature for designs that must not load the source. In a photodiode amplifier, a bipolar op-amp with nanoamp bias would introduce a DC error that swamps the signal at low light levels; the TLC271ID's CMOS front end keeps the error in the femtoamp range. Similarly, in a high-impedance voltage divider for battery monitoring, the bias current does not create a measurable voltage drop across the divider resistors.