LM208A

·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 mA, even in saturation
·Guaranteed 5 mV/ßC drift

The LM208A/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 LM208A, an alternate compensation scheme can be used to make it particularly insensitive to power supply noise and to make supply bypass capacitors unnecessary.

The low current error of the LM208A series makes possible many designs that are not practical with conventional amplifiers. In fact, it operates from 10 MX source resistances,