LM101A/LM201A/LM301A
Operational Amplifiers
General Description
The LM101A series are general purpose operational amplifiers which feature improved performance over industry standards like the LM709. Advanced processing techniques
make possible an order of magnitude reduction in input currents, and a redesign of the biasing circuitry reduces the
temperature drift of input current.Improvedspecificationsinclude:
•
Offset voltage 3 mV maximum over temperature
(LM101A/LM201A)
•
Input current 100 nA maximum over temperature
(LM101A/LM201A)
•
Offset current 20 nA maximum over temperature
(LM101A/LM201A)
•
Guaranteed drift characteristics
•
Offsets guaranteed over entire common mode and supply voltage ranges
•
Slew rate of 10V/µs as a summing amplifier
This amplifier offers many features which make its appli-
cation nearly foolproof: overload protection on the input
and output, no latch-up when the common mode range is
exceeded, and freedom from oscillations and compensation with a single 30 pF capacitor. It has advantages over
internally compensated amplifiers in that the frequency
compensation can be tailored to the particular application. For example, in low frequency circuits it can be overcompensated for increased stability margin. Or the compensation can be optimized to give more than a factor of
ten improvement in high frequency performance for most
applications.
In addition, the device provides better accuracy and lower
noise in high impedance circuitry. The low input currents
also make it particularly well suited for long interval integrators or timers, sample and hold circuits and low frequency waveform generators. Further, replacing circuits
where matched transistor pairs buffer the inputs of conventional IC op amps, it can give lower offset voltage and
a drift at a lower cost.
The LM101A is guaranteed over a temperature range of
−55˚C to +125˚C, the LM201A from −25˚C to +85˚C, and
the LM301A from 0˚C to +70˚C.
Connection Diagrams (Top View)
Dual-In-Line Package
DS007752-4
Order Number LM101AJ, LM101J/883 (Note 1),
LM201AN or LM301AN
See NS Package Number J08A or N08E
Ceramic Flatpack Package
DS007752-40
Order Number LM101AW/883 or LM101W/883
See NS Package Number W10A
September 1999
LM101A/LM201A/LM301A Operational Amplifiers
© 1999 National Semiconductor Corporation DS007752 www.national.com