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UA741 Op Amp: A Basic Overview [FAQ]

Author: Mia Date: 5 Mar 2021  110

ua741 op amp

UA741 is a general-purpose operational amplifier featuring offset-voltage null capability.

 

In this blog today, we will walk you in the detailed introduction of UA741 op amp device, from its pinout, features, alternatives to its application, package, where and how to use this device, etc.


Catalog

UA741 Description

UA741 Pinout

UA741 Features

UA741 Alternatives

Where to Use UA741

How to Use UA741

UA741 Application

UA741 Package

UA741 Manufacturer

Component Datasheet

FAQ


UA741 Description

 

UA741 is a general purpose amplifier.

 

The high common-mode input voltage range and the lack of latch-up make the amplifier ideal for voltage-follower applications. The device is short-circuit protected and the internal frequency compensation ensures stability without external components. A low-value potentiometer may be connected between the offset null inputs to null out the offset voltage.

 

The UA741 device is characterized for operation from 0°C to 70°C.


UA741 Pinout

ua741 op amp ua741 op amp pinout
UA741 UA741 Pinout

 

Pin Number Pin Name Description

1,5

Offset N1, N2

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

Vcc-

Connected to negative rail or ground

6

Output

Output pin of the Op-Amp

7

Vcc+

Connected to positive rail of supply voltage  

8

NC

No connection


UA741 Features

  • Short-Circuit Protection

  • Offset-Voltage Null Capability

  • Large Common-Mode and Differential Voltage Ranges

  • No Frequency Compensation Required

  • No Latch-Up


UA741 Alternatives

LM4871, AD620, IC6283, JRC4558, TL081, LF351N, MC33171N


Where to Use UA741

If you've been in electronics for quite some time and started with Op-Amps, then you're sure to find the name UA741. It is a single Op-Amp package that has been widely used by engineers and students for a long time now. This Op-Amp can be used for many general purpose applications such as Voltage Followers, Buffers, Comparators, Amplifiers, Adders and more. So if you're looking for a simple old Op-Amp just for some basic circuit design, this IC might be the right choice for you.

 

Although there are dozens of other advanced technology Op-Amps, the UA741 still seems to be the first choice for many engineers because of its reliable properties.


How to Use UA741

UA741 IC is very similar to the LM324 Op-Amp, and the LM324 can be considered a successor to the UA741. The main difference is that LM324 has two Op-Amps inside the package that make it more cost-effective and compact. If you are curious to learn about the few application circuits of this IC, you can read how LM324 is used, since both ICs share the same applications.

 

Other than that one remarkable feature of the UA741 Op-Amp is that it has two offset pins (pin1 and pin 5). These two pins can be used to correct an Op-Amp offset error. This is when the voltage difference between the inverting and non-inverting pins is zero, the Op-Amp output voltage should also be zero. If this is not the case, it is considered to be offset error and can be reset to zero by providing offset voltage through offset pins that would nullify the error.


UA741 Application

  • Functions generator

  • Integrators

  • DVD recorders

  • Summing amplifiers

  • DVD players

  • Active filters

  • Audio mixers

  • Voltage followers


UA741 Package

ua741 op amp package


UA741 Manufacturer

Texas Instruments Inc. (TI) is an American technology company that designs and manufactures semiconductors and various integrated circuits, which it sells to electronics designers and manufacturers globally. Its headquarters are in Dallas, Texas, United States. TI is one of the top ten semiconductor companies worldwide, based on sales volume. Texas Instruments's focus is on developing analog chips and embedded processors, which accounts for more than 80% of their revenue. TI also produces TI digital light processing (DLP) technology and education technology products including calculators, microcontrollers and multi-core processors. To date, TI has more than 43,000 patents worldwide.


Component Datasheet

UA741 Op Amp Datasheet


FAQ

  • What is UA741?
The UA741 is a high performance monolithic operational amplifier constructed on a single silicon chip. It is intended for a wide range of analog applications. The high gain and wide range of operating voltages provide superior performances in integrators, summing amplifiers and general feedback applications.
  • What is the difference between LM741 and UA741?

LM741 is designed by Texas instrument and ua741 by ST microelectronics. So they differ at the silicon level. ... The LM741 was developed by National Semi and TI developed the UA series as a second source to National. Both are 8 pin Dual In-Line packages with the same pin-out.

  • What are the features of IC 741?

The following are the basic specifications of IC 741:

  • Power Supply: Requires a Minimum voltage of 5V and can withstand upto 18V.
  • Input Impedance: About 2 megaohms.
  • Output impedance: About 75 ohms.
  • Voltage Gain: 200,000 for low frequencies.
  • Maximum Output Current: 20mA.
  • Recommended Output Load: Greater than 2 kiloohms.
  • How does IC 741 work?

IC 741 mainly performs mathematical operations like addition, subtraction, division, multiplication, integration, differentiation etc. IC 741 has three stages such as differential input, gain, and push-pull output. Pin 1 and 5 are “offset null” or “balance” terminals. The op amp is nothing but a differential amplifier.

 

Ordering & Quality

Photo Mfr. Part # Company Description Package PDF Qty Pricing
(USD)
UA741CD UA741CD Company:Texas Instruments Remark:General Purpose Amplifier 1 Circuit 8-SOIC Package:8-SOIC (0.154"", 3.90mm Width)
DataSheet
In Stock:On Order
Inquiry
Price:
1+: $0.52000
10+: $0.44300
25+: $0.41320
100+: $0.30680
250+: $0.25960
500+: $0.24780
1000+: $0.18290
2500+: $0.17110
5000+: $0.15930
Inquiry
UA741CD UA741CD Company:STMicroelectronics Remark:General Purpose Amplifier 1 Circuit 8-SOIC Package:8-SOIC (0.154"", 3.90mm Width)
DataSheet
In Stock:On Order
Inquiry
Price:
1+: $0.52000
10+: $0.44300
25+: $0.41320
100+: $0.30680
250+: $0.25960
500+: $0.24780
1000+: $0.18290
2500+: $0.17110
5000+: $0.15930
Inquiry
UA741CDG4 UA741CDG4 Company:Texas Instruments Remark:General Purpose Amplifier 1 Circuit 8-SOIC Package:8-SOIC (0.154"", 3.90mm Width)
DataSheet
In Stock:On Order
Inquiry
Price:
Call
Inquiry
UA741CDR UA741CDR Company:Texas Instruments Remark:General Purpose Amplifier 1 Circuit 8-SOIC Package:8-SOIC (0.154"", 3.90mm Width)
DataSheet
In Stock:On Order
Inquiry
Price:
1+: $0.49000
10+: $0.40000
25+: $0.36560
100+: $0.24650
250+: $0.20400
500+: $0.18700
1000+: $0.14025
2500+: $0.13175
5000+: $0.12325
10000+: $0.11305
25000+: $0.10880
62500+: $0.10625
100000+: $0.10455
Inquiry
UA741CDRG4 UA741CDRG4 Company:Texas Instruments Remark:General Purpose Amplifier 1 Circuit 8-SOIC Package:8-SOIC (0.154"", 3.90mm Width)
DataSheet
In Stock:On Order
Inquiry
Price:
5000+: $0.12325
Inquiry
UA741CDT UA741CDT Company:STMicroelectronics Remark:IC OPAMP GP 1 CIRCUIT 8SO Package:8-SOIC (0.154", 3.90mm Width)
DataSheet
In Stock:7500
Inquiry
Price:
2500+: $0.12788
5000+: $0.11963
12500+: $0.10972
25000+: $0.10560
62500+: $0.10312
125000+: $0.09900
Inquiry
UA741CN UA741CN Company:STMicroelectronics Remark:General Purpose Amplifier 1 Circuit 8-DIP Package:8-DIP (0.300"", 7.62mm)
DataSheet
In Stock:On Order
Inquiry
Price:
Call
Inquiry
UA741CP UA741CP Company:Texas Instruments Remark:IC OPAMP GP 1 CIRCUIT 8DIP Package:8-DIP (0.300", 7.62mm)
DataSheet
In Stock:11126
Inquiry
Price:
1+: $0.49000
10+: $0.40000
25+: $0.36560
100+: $0.24650
250+: $0.20400
500+: $0.18700
1000+: $0.14025
2500+: $0.13175
5000+: $0.12325
Inquiry
UA741CPG4 UA741CPG4 Company:Texas Instruments Remark:General Purpose Amplifier 1 Circuit 8-PDIP Package:8-DIP (0.300"", 7.62mm)
DataSheet
In Stock:On Order
Inquiry
Price:
Call
Inquiry
UA741CPS Company:Texas Instruments Remark:General Purpose Amplifier 1 Circuit 8-SO Package:8-SOIC (0.209"", 5.30mm Width)
N/A
In Stock:On Order
Inquiry
Price:
1336+: $0.18720
Inquiry

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