LM108-N, LM108AQML
www.ti.com
SNOSAH4B – MARCH 2005 – REVISED MARCH 2013
LM108-N/LM108AQML Operational Amplifiers
Che...
LM108-N, LM108AQML
www.ti.com
SNOSAH4B – MARCH 2005 – REVISED MARCH 2013
LM108-N/LM108AQML Operational
Amplifiers
Check for Samples: LM108-N, LM108AQML
FEATURES
1
2 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
Ensured Drift Characteristics
DESCRIPTION
The LM108-N is a precision operational amplifier having specifications a factor of ten better than FET
amplifiers over a −55°C to +125°C temperature range.
The devices operate with supply
voltages from ±2V to ±20V 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 LM108-N 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 500 μV/sec and analog time delays in excess of one hour can be made using
capacitors no larger than 1 μF.
Connection Diagrams
*Package is connected to Pin 4 (V−) **Unused pin (no internal connection) to allow for input anti-leakage guard ring on printed circuit board layout.
Figure 1. TO-99 Package 8 Lead CDIP Package
Figure ...