Product Overview
Vintage New Old Stock National Semiconductor LM301AN Precision Op Amp in 8-Pin Plastic DIP
This amplifier supports legacy analog designs requiring stable offset behavior, low input current drift, and dependable compensation characteristics. It suits classic active filters, integrators, and instrumentation functions, matching common op amp/linear nomenclature in vintage documentation. Its DIP-8 format makes it appropriate for through-hole repair work.
Product Condition
Unused, New Old Stock.
Product Overview
The National Semiconductor LM301AN is the commercial-grade plastic DIP version of the LM101A/LM201A/LM301A family. It provides low input offset voltage, controlled bias current, and internal compensation suitable for gains of five or higher. With offset-null pins for fine adjustment and supply flexibility from ±5 V to ±18 V, it was widely used in audio, test equipment, and analog control assemblies where predictable linear behavior was essential.
Key Features
- Input offset voltage typically around 2–7 mV depending on conditions
- Low input bias current in the tens to hundreds of nanoamps
- Large-signal voltage gain reaching well over 25 V/mV
- Unity-gain stability with recommended compensation capacitor
- Gain-bandwidth product of approximately 3 MHz
- Slew rate of about 0.5 V/µs
- Supports ±5 V to ±18 V supply rails
- DIP-8 package with offset-null pins for precision trimming
Applications
- Restoration of legacy analog instrumentation amplifiers
- Active filter repair in control and measurement systems
- Vintage audio and laboratory device servicing
- Integrator and summing amplifier circuits
- Precision analog prototypes built on DIP-8 boards
- Educational use examining classic compensated op amp designs
Frequently Asked Questions
Is the LM301AN internally compensated?
Yes. It includes internal compensation suitable for closed-loop gains of five or greater when used with the recommended small external capacitor.
Can it operate from a wide supply range?
Yes. It supports dual supplies from approximately ±5 V to ±18 V, matching many legacy analog system requirements.
What do the offset-null pins provide?
Pins 1 and 5 allow manual offset trimming for circuits that require tighter output centering.
Does it directly replace modern rail-to-rail op amps?
Not typically. Its supply and input range reflect 1970s analog topology and differ from modern single-supply devices.
Use this op amp to rebuild legacy analog filters or instrumentation stages by applying its offset-null adjustment and stable compensated behavior while seating it into the existing DIP-8 socket.
