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Pin details:

Pin 1- Offset Null

Pin 2- Inverting Input

Pin 3- Non-Inverting Input

Pin 4- Negative supply voltage

Pin 5- Offset Null

Pin 6- Output

Pin 7- Positive supply voltage

Pin 8- Nc


IC 741

An Operational amplifier IC-741 is basically a three-terminal device which consists of two high impedance inputs. One of the inputs is called the Inverting Input, marked with a negative or “minus” sign, (-). The other input is called the Non-inverting Input, marked with a positive or “plus” sign ( + ).It looks like a small chip. A third terminal represents the operational amplifiers output port which can both sink and source either a voltage or a current. In a linear operational amplifier, the output signal is the amplification factor, known as the amplifier’s gain(A) multiplied by the value of the input signal and depending on the nature of these input and output signals.

741 has 8 pins. The most significant pins are 2,3 and 6, where pin2 and 3 are pin 2 and 3 denote inverting & non-inverting terminals and pin 6 denotes output voltage. The triangular form in the IC signifies an op-amp integrated circuit. The current version of the chip is denoted by the famous IC 741 op-amp. The main function of this IC 741 is to do mathematical operations in various circuits. IC 741 op-amp is made from various stages of a transistor which commonly have three stages like differential i/p, a push-pull o/p an intermediate gain stage.
It is a DC-Coupled high-gain electronic voltage amplifier with a differential input and, usually, a single-ended output. In this configuration, an op-amp produces an output potential (relative to circuit ground) that is typically hundreds of thousands of times larger than the potential difference between its input terminals. Operational amplifiers had their origins in analog computers, where they were used to perform mathematical operations in many linear, non-linear, and frequency-dependent circuits.

The popularity of the op-amp as a building block in analog circuits is due to its versatility. By using negative feedback, the characteristics of an op-amp circuit, its gain, input and Output impedance, a bandwidth etc. are determined by external components and have little dependence on temperature coefficients or manufacturing variations in the op-amp itself.


  • Short circuit and overload protection provided.
  • Low power consumption.
  • Large common mode rejection ratio (CMRR) and differential voltage ranges.

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More Info

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