LM108A/LM208A/LM308A Operational Amplifiers
■The LM108/LM108A series are precision operational amplifiers having specifications about a factor of ten better thanFET 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 ±2V tog18V 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 bypass capacitors unnecessary.
■The low current error of the LM108A series makes possible many designs that are not practical with conventional amplifiers. In fact, it operates from 10 MΩ source resistances, introducing less error than devices like the 709 with 10 kΩ sources. Integrators with drifts less than 500mV/sec and analog time delays in excess of one hour can be made using capacitors no larger than 1 μF.
■The LM208A is identical to the LM108A, except that the LM208A has its performance guaranteed over a -25ºC to +85ºC temperature range, instead of -55ºC to +125ºC. The LM308A devices have slightly-relaxed specifications and performances over a 0ºC to ﹢70ºC temperature range.
●Features
■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/ºC drift
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LM108A 、 LM208A 、 LM308A 、 LM101A 、 LM108A series 、 LM108 series 、 LM108AH 、 LM208AH 、 LM108AJ-8 、 LM208AJ-8 、 LM308AJ-8 、 LM308AM 、 LM308AN 、 LM308AH |
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Datasheet |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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May 1989 |
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TL/H/7759 |
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158 KB |
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