General Description

The LM108 series are precision operational amplifiers hav-

ing specifications a factor of ten better than FET amplifiers

over a b 55 Degrees C to a 125 Degrees C temperature range.

The devices operate with supply voltages from  2V to

 20V and have sufficient supply rejection to use unregulat-

ed 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.

The low current error of the LM108 series makes possible

many designs that are not practical with conventional ampli-

fiers. In fact, it operates from 10 Mohm source resistances,

introducing less error than devices like the 709 with 10 kohm

sources. Integrators with drifts less than 500 mV/sec and

analog time delays in excess of one hour can be made us-

ing capacitors no larger than 1 mF.

The LM108 is guaranteed from b 55 Degrees C to a 125 Degrees C, the

LM208 from b 25 Degrees C to a 85 Degrees C, and the LM308 from 0 Degrees C to a 70 Degrees C.


  • 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 drift characteristics

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  • Product Code: LM308 OPERATIONAL AMPLIFIER - BA16
  • Availability: 1
  • R10.00