The LM108/LM108A series are precision operational amplifiers having specifications about a factor of ten better than FET amplifiers over their operating temperature range. In addition to low input currents, these devices have extremely low offset voltage, making it possible to eliminate offset adjustments, in most cases, and obtain performance approaching chopper stabilized amplifiers.
The devices operate with supply voltages from g2V to g18V and have sufficient supply rejection to use unregulated supplies. Although the circuit is interchangeable with and uses the same compensation as the LM101A, an alternate compensation scheme can be used to make it particularly insensitive to power supply noise and to make supply by pass capacitors unnecessary.
■ Offset voltage guaranteed less than 0.5 mV
■ Maximum input bias current of 3.0 nA over temperature
■ Offset current less than 400 pA over temperature
■ Supply current of only 300 μA, even in saturation
■ Guaranteed 5 μV/°C drift