OFFSET_NULL

INVERTING_INPUT

LM741-MIL

NON-INVERTING_INPUT

V

±

1

2

3

4

NC

V+

OUTPUT

OFFSET_NULL

8

7

6

5

R2

4.7

NŸ

R1

4.7

NŸ

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8

LM741-MIL

SNOSD62 – JUNE 2017

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Copyright © 2017, Texas Instruments Incorporated

8 Application and Implementation

NOTE

Information in the following applications sections is not part of the TI component

specification, and TI does not warrant its accuracy or completeness. TI’s customers are

responsible for determining suitability of components for their purposes. Customers should

validate and test their design implementation to confirm system functionality.

8.1 Application Information

The LM741-MIL is a general-purpose amplifier than can be used in a variety of applications and configurations.

One common configuration is in a non-inverting amplifier configuration. In this configuration, the output signal is

in phase with the input (not inverted as in the inverting amplifier configuration), the input impedance of the

amplifier is high, and the output impedance is low. The characteristics of the input and output impedance is

beneficial for applications that require isolation between the input and output. No significant loading will occur

from the previous stage before the amplifier. The gain of the system is set accordingly so the output signal is a

factor larger than the input signal.

8.2 Typical Application

Figure 1. LM741-MIL Noninverting Amplifier Circuit

8.2.1 Design Requirements

As shown in Figure 1, the signal is applied to the noninverting input of the LM741-MIL. The gain of the system is

determined by the feedback resistor and input resistor connected to the inverting input. The gain can be

calculated by Equation 1:

Gain = 1 + (R2/R1)

(1)

The gain is set to 2 for this application. R1 and R2 are 4.7-kΩ resistors with 5% tolerance.

8.2.2 Detailed Design Procedure

The LM741-MIL can be operated in either single supply or dual supply. This application is configured for dual

wave was used as the signal input. 5% tolerance resistors were used, but if the application requires an accurate

gain response, use 1% tolerance resistors.

8.2.3 Application Curve

The waveforms in Figure 2 show the input and output signals of the LM741-MIL non-inverting amplifier circuit.

The blue waveform (top) shows the input signal, while the red waveform (bottom) shows the output signal. The

system is 2. Due to the 5% tolerance, the gain of the system including the tolerance is 1.992. The gain of the

system when measured from the mean amplitude values on the oscilloscope was 1.83.