Introduction to LM2902 Operational Amplifiers

Hello, readers welcome to the new tutorial. Here we will learn Introduction to LM2902 Operational Amplifiers. An amplifier is a device that amplifies an electrical signal by changing the zero value and that of its output signal (similar to an amplifier). The design of the op-amp is to achieve a high level where the current profit and bias are reduced while simultaneously giving a low power output.

We will see details of its working, features, and some other parameters. So let’s get started.

Introduction to LM2902 Operational Amplifiers

• In the series of amplifiers LM2902, 2 operational amplifiers offer a large value of gain having less value of input offset voltage are configured

• This configuration helps to work from a low value of volts to large varied values of volts.
• They are also configured to work at a separate supply source
• The value of the current provided to them is less according to the configuration of the power source
• LM2902 is less expensive as compared to other operational amplifiers and has a quadruple nature of operational amplifiers and comes with four operational amplifiers in a single casing.
• All these four operational amplifiers can work on one power source and with that distinct source to their connection of inputs.
• Its common applications are transducer amplifiers also work as normal operational amplifier configurations.

LM2902 Operational Amplifiers Pinouts

• There are main fourteen pinouts have been described here
• I/P 1-: it is the inverting input of the first operational amplifier
• I/P 1-: It is the noninverting input of the first operational amplifier

• V+: Here positive source is linked to power the module
• I/P 2: It is the non-inverting input terminal of the second operational amplifier
• I/P 2-: It is the inverting input of the second operational amplifier
• O/P 2: It is the output point of the second operational amplifier
• O/P 3: It is the output terminal of the third operational amplifier
• I/P 3-: Inverting input terminal of third operational amplifier
• I/P 3+: Non-inverting input point of third operational amplifier
• GND: Here ground is linked

LM2902 Operational Amplifiers Features

• Its main features are listed here
• It gains value if one megahertz

• It can amplify the open-loop differential voltage to one hundred Volts
• The value of the input biasing current is forty-five nanometers
• value of offset current is five nanoamps
• value of offset volts is two millivolts
• The Dc gain is up to one hundred decibels
• Can operate at different values of volts from three volts to thirty-two volts

LM2902 Technical Features

• Wide gain bandwidth: 1.3 MHz
• Input common-mode voltage range includes the negative rail
• Large voltage gain: 100 dB
• Low input offset current: 2 nA
• Wide power supply range:
• Single supply: 3 V to 30 V
• Supply current per amplifier: 375 µA
• Low input bias current: 20 nA
• Dual supplies: ± 1.5 V to ± 15 V

LM2902 Operational Amplifiers Amplifier Applications

• Its main applications are listed here with detailed
• It used in industrial devices to control
• Used inaccurate value of power supplies
• It works in embedded systems
• Normally used operational amplifiers are created through it
• It used in DMM
• DVD used it
• Different types of sensors are designed with amplifiers

Where to use LM2902 Op-Amp

• LM2902 is a Quad Package Operational Amplifier, that comes with 4 operational amplifiers and a single operational amplifier used singly way.
• LM2902 series comes with 4 independent, high gain Omp amps based on working with a single power source for different voltage ranges.
• Working from a split power supply is also done and low power source current drain is not based on power supply voltage magnitude.
• Its common uses are transducer amplifiers, DC gain blocks, and conventional operational amplifier circuits that can applied for single power systems.

What is the best operational amplifier?

• Some best operational amplifiers are
• LM324
•  RC4558
• NE5532 .
•  TL072 .
•  OPA2134
•  LM339
•  OP07
•  LMH6629