LM301AExternally compensated operational amplifier

Set the gain. Choose the compensation.

Manufacturer-referenced

onsemi · LM301ANG

PDIP-8LM301A/D · Rev. 12 · July 2025

LM301A is a single bipolar operational amplifier with external frequency compensation. Its eight pins provide two inputs, an output, two supply rails and balance/compensation connections. Pin 8 is not a spare pin: the compensation network is part of the circuit design. This page follows onsemi LM301A/D revision 12. It offers the SOIC-8 LM301ADR2G and the documented legacy PDIP-8 LM301ANG; the manufacturer marks the latter discontinued. Both package views keep the same electrical pin numbers. The example uses ±15 V supplies, 30 pF between pins 1 and 8, and a 90 kΩ / 10 kΩ feedback pair. A 0.20 V input gives 2.00 V ideal DC output. The 0 V midpoint is distinct from the negative supply, and real device errors and frequency response must be included in a practical design.

3D View

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Real View

LM301ANG black package with silver leads and readable markings.

Pinout

LM301ANGPDIP-8Top view

PCB Footprint

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8Physical pins LM301ANGPDIP-8 Manufacturer-referencedonsemi

Pin diagram

Select a pin to explore its connection

Package map

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LM301ANGPDIP-8Top view

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PIN 1 · Balance / compensation

BAL1

Balance / compensation

Function

One balance node also used by the external compensation network.

How to connect

Connect a 30 pF capacitor to pin 8 in this example.

Electrical note

Do not leave the compensation path out.

Key specifications

Use the LM301A column of the shared family datasheet. The higher supply and temperature ratings of LM201A/LM201AV do not apply.

External compensation30 pF · example

Example rails±15 V

LM301A ambient0–70 °C

Example gain10 V/V

Operating profile

Supply, signals and operating conditions

LM301A operating profile
Parameter	Value	Conditions / notes
Selected package	PDIP-8	LM301ANG
Input common mode	±12 V	At ±15 V rails
Input offset	2 mV typ	7.5 mV max · 25°C

Package details

LM301ANG · PDIP-8

Selected package

Selected LM301A physical package
Property	Details
Manufacturer	onsemi
Part number	LM301ANG
Package	PDIP-8
Connections	8 pins
Mounting	Through-hole
Lead pitch	2.54 mm
Package code	CASE 626-05
Thermal reference	Check package dissipation and actual mounting

Device and package scope

onsemi revision 12

Manufacturer specifications 5 parameters

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Parameter	Value	Conditions / notes
SOIC-8 order	LM301ADR2G	Tape and reel; listed order
PDIP-8 order	LM301ANG	Legacy, marked discontinued in revision 12
Compensation	External	Pin 1 to pin 8 for single-pole scheme
Ambient range	0 to +70°C	LM301A grade
Supply specification range	±5 to ±15 V	Unless a specific test states otherwise

Do not combine different family-member limits.

DC electrical characteristics

LM301A · 25°C unless stated

Manufacturer specifications 6 parameters

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Parameter	Value	Conditions / notes
Input offset	2 mV typical; 7.5 mV maximum	RS ≤ 50 kΩ
Input offset current	3 nA typical; 50 nA maximum	25°C
Input bias current	70 nA typical; 250 nA maximum	25°C
Input resistance	2 MΩ typical; 0.5 MΩ minimum	Specified test conditions
Supply current	1.8 mA typical; 3 mA maximum	±15 V
Open-loop gain	160 V/mV typical; 25 minimum	±15 V, VO ±10 V, RL > 2 kΩ

Typical values are not guarantees.

Across the operating temperature range

LM301A, 0 to +70°C

Manufacturer specifications 7 parameters

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Parameter	Value	Conditions / notes
Input offset	10 mV maximum	RS ≤ 50 kΩ
Offset / bias current	70 / 300 nA maximum	Specified family conditions
Input voltage range	−12 to +12 V	±15 V rails
CMRR	70 dB minimum; 90 typical	RS ≤ 50 kΩ
Supply rejection	70 dB minimum; 96 typical	RS ≤ 50 kΩ
Output swing with 10 kΩ	±12 V minimum; ±14 V typical	±15 V supply
Output swing with >2 kΩ	±10 V minimum; ±13 V typical	±15 V supply

Leave input and output headroom.

Absolute maximum ratings

Stress limits, not operating targets

Manufacturer specifications 5 parameters

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Parameter	Value	Conditions / notes
Supply rails	±18 V	LM301A, not LM201A
Differential input	±30 V	Absolute limit
Common-mode stress	±15 V	Below ±15 V supply, input limit equals supply
PDIP dissipation	625 mW at ambient 25°C	Derate 5 mW/°C above 25°C
Storage	−65 to +150°C	Unpowered

Package and mounting constrain dissipation.

Gain-of-ten circuit

Light-load illustrative DC calculation

Manufacturer specifications 6 parameters

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Parameter	Value	Conditions / notes
Positive / negative rails	+15 V / −15 V	Pins 7 / 4; midpoint is 0 V
Compensation	30 pF	Between pins 1 and 8
Feedback / return	90 kΩ / 10 kΩ	OUT6 to IN−2; IN−2 to midpoint
Input / ideal output	0.20 V / 2.00 V	IN+3; high-impedance output meter
Supply bypass	100 nF per rail	Each rail to midpoint
Balance pin 5	Open	Optional trim not fitted

30 pF is a conservative standard compensation choice; dynamic behavior still needs validation.

Connections by function

Select a pin for its function, connection guidance and electrical notes.

Balance / compensation3 pins

Signal inputs2 pins

Supply2 pins

Analog output1 pin

LM301A working principle: illustrated functional stages, basic circuit and connections — Select the diagram to read it at full resolution.

How it works

3 stages · Explore one step at a time

Step 1 / 3

Compare the inputs

The differential stage responds to the voltage between IN+ and IN−.

Step 2 / 3

Choose compensation

The external capacitor shapes loop response. The illustrated 30 pF connection is between pins 1 and 8; keep it short.

Step 3 / 3

Close the feedback loop

Negative feedback makes the nominal DC gain 1 + 90 kΩ / 10 kΩ = 10. Real offset, bias current, bandwidth and loading cause error.

LM301A gain-of-ten circuit with 30 pF between pins 1 and 8, split 15 V supplies and negative feedback. — Pin 5 is open; pin 8 is connected to the compensation capacitor.

Connect it, step by step

Follow the component values and pin connections

Compare the inputs

The differential stage responds to the voltage between IN+ and IN−.

Choose compensation

The external capacitor shapes loop response. The illustrated 30 pF connection is between pins 1 and 8; keep it short.

Close the feedback loop

Negative feedback makes the nominal DC gain 1 + 90 kΩ / 10 kΩ = 10. Real offset, bias current, bandwidth and loading cause error.

LM301A functional internal cutaway with external compensation pins 1 and 8. — Original functional visualization, not a transistor-level die reconstruction.

Explore the circuit

Select a stage to see its role and connections

Compare the inputs

The differential stage responds to the voltage between IN+ and IN−.

Choose compensation

The external capacitor shapes loop response. The illustrated 30 pF connection is between pins 1 and 8; keep it short.

Close the feedback loop

Negative feedback makes the nominal DC gain 1 + 90 kΩ / 10 kΩ = 10. Real offset, bias current, bandwidth and loading cause error.

Selected packagePDIP-8LM301ANG

Physical connections8 pinsPackage-specific numbering

Reference collection6 tables29 parameters & pin functions