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TL081 General Purpose Op-Amp

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The TL081 is a low cost, high-speed JFET input operational amplifier with an internally trimmed input offset voltage (BI-FET IITM technology). The device requires a low supply current and yet maintains a large gain-bandwidth product and a fast slew rate.

 

TL081 Pinout Configuration

Pin Number

Pin Name

Description

1,5

Offset NULL

Used to set offset voltage if required

2

Inverting Input (IN-)

The Inverting pin of the Op-Amp

3

Non- Inverting Input (IN+)

The Non-Inverting Pin of the Op-Amp

4

V-

Connected to negative rail or ground

6

Output

Output pin of the Op-Amp

7

V+

Connected to a positive rail of supply voltage 

8

NC

Not Connected

 

TL081 features and specifications:

  • Supply Voltage: 7V to 36 V
  • GBP - Gain Bandwidth Product: 3 MHz
  • SR - Slew Rate: 13 V/us
  • CMRR - Common Mode Rejection Ratio: 70 dB to 86 dB
  • Operating Supply Current: 1.4 mA
  • Input Bias Current: 200pA
  • Power Dissipation:670mW
  • Available in 8-Pin PDIP, SOIC Packages

Note: Complete Technical Details can be found at the TL081 datasheet given at the end of this page.

 

Equivalent for TL081:  UA741, CA3140

Alternatives Audio Amplifiers: LM4871, AD620, IC6283, JRC45558, LF351N, MC33171N

 

Where to use the TL081 Op-Amp

The TL081 JFET-input operational amplifier is designed to offer a wider selection than any previously developed operational amplifier. TL081 is a single package Op-Amp that has been widely used for quite a long time now. This Op-Amp can be used for many general purpose applications like Voltage follower, Buffers, Comparators, Amplifiers, Adders and much more. So if you looking for a plain old Op-Amp just for some basic circuit design then this IC might be the right choice for you.

 

How to use TL081 Op-Amp

An Inverting Amplifier Application circuit from the TL081 datasheet is given below. you only need two resistors to use TL081 as an inverting amplifier.

TL081 Application Circuit

An inverting amplifier takes a positive/negative voltage on the inverting input pin and makes it a negative/positive voltage of the same magnitude. Output at the VOUT pin is feedback to input through the feedback resistor (Rf).

The input and output voltages can be calculated as,

Vin = I.R1​
Vout = -I.Rf

 

Applications of TL081 IC

  • Sample and Hold Amplifiers
  • Peak Detectors
  • Active Filters
  • Comparators
  • Interface in 5V TTL Systems and Other Low Supply Voltage Systems
  • All Standard Operational Amplifier Applications
  • Function Generators

 

2D-Model of TL081 IC

Dimensions for the TL081 IC is given below. These dimensions are for the 8-Pin PDSO package. If you are using different package IC please refer to the TL081 datasheet.

TL081 Op-Amp Dimensions

Component Datasheet

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