LM741CMX

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Amplifier Type:	General Purpose
Number of Circuits:	1
Output Type:	--
Slew Rate:	0.5 V/µs
Gain Bandwidth Product:	1.5MHz
Current - Input Bias:	80nA
Voltage - Input Offset:	2mV
Current - Supply:	1.5mA
Current - Output / Channel:	25mA
Voltage - Supply, Single/Dual (±):	10 V ~ 36 V, ±5 V ~ 18 V
Operating Temperature:	0°C ~ 70°C
Mounting Type:	Surface Mount
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Supplier Device Package:	8-SOP
Base Part Number:	LM741

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Introduction

The LM741CMX is a popular class of operational amplifier (commonly called an op-amp) designed by National Semiconductor. It is a monolithic integrated circuit (IC) comprised of two differential amplifiers, which are available in both bipolar and CMOS technologies. Originally developed in the 1970s, the LM741CMX has become a widely used component for a variety of applications, including analog signal conditioning, amplifying, and filtering.

Application Fields

The LM741CMX is used in a variety of fields, from automotive and telecommunications to industrial, medical and communications systems. Its capabilities make it suitable for general-purpose amplifier applications, including transducer and instrumentation applications, for which its low power consumption, high frequency response and good noise rejection characteristics make it well-suited.

Instrumentation Applications

Including process control, instrumentation measurement and control, the LM741CMX is often used in industrial automating systems. These systems require highly precise measurements, and the LM741CMX’s differential input and wide frequency response can provide accurate results. Additionally, the low cost of the component makes it an ideal choice for applications that require multiple instances of amplification.

Audio Applications

The LM741CMX is commonly used in audio applications. Its wide frequency response and low noise make it suitable for high-fidelity audio systems. It is often used for amplifier stages for powering speakers, for driving headphones, or for tone controls and other signal conditioning purposes.

Video Applications

The high frequency response and low noise of the LM741CMX make it well suited for video applications. It can be used to amplify video signals, to drive video cables, and as an active video filter to minimize image disruption.

Buffer Amplifier Applications

Buffer amplifiers are used to isolate an active part of a circuit to protect other parts of the system. The LM741CMX is commonly used in buffer amplifier circuits. It is capable of driving high capacitive loads and provides good isolation, making it useful in providing protection in many different circuits.

Working Principle

The LM741CMX is a differential amplifier, which combines two independent amplifier elements in a single package. Each amplifier element contains a voltage amplifier stage, a common collector stage, and an emitter-follower stage. These stages are used to amplify the input signal, with the emitter follower providing a high-impedance output to drive the load. The voltage amplifier stage provides the gain for the amplifier, the common collector stage provides for high gain with low output impedance, and the emitter-follower stage provides for low output impedance and low power operation. The combined stages of the LM741CMX allow for high gain, low power and high frequency operation, making it suitable for a wide range of applications.

Conclusion

The LM741CMX is a widely used operational amplifier, capable of providing a high level of performance in a variety of applications. Its capabilities make it suitable for instrumentation, audio, video, and buffer amplifier applications. The LM741CMX’s combination of high gain, low noise, and wide frequency response make it a versatile choice for many different applications.

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