LM224J

Voltage - Input Offset:	2mV
Base Part Number:	LM224
Supplier Device Package:	14-CDIP
Package / Case:	14-CDIP (0.300", 7.62mm)
Mounting Type:	Through Hole
Operating Temperature:	-25°C ~ 85°C
Voltage - Supply, Single/Dual (±):	3 V ~ 32 V, ±1.5 V ~ 16 V
Current - Output / Channel:	40mA
Current - Supply:	1.5mA
Series:	--
Current - Input Bias:	45nA
Gain Bandwidth Product:	1MHz
Slew Rate:	0.5 V/µs
Output Type:	--
Number of Circuits:	4
Amplifier Type:	General Purpose
Part Status:	Active
Packaging:	Tube

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The LM224J is a monolithic quad operational amplifier and is part of a family of linear amplifiers commonly used in instrumentation, OP amps, and buffer amps. Developed by Linear Technology Corporation, this integrated circuit (IC) contains four general-purpose, high-performance, low-power op-amps in a single 35-pin dual in-line package. It operates over a wide voltage range and can provide superior performance in a number of different contexts. This article will discuss the application field, working principles, and features of the LM224J.

Application Field

The LM224J is a versatile and applicable in a range of settings. It is most popularly used in instrumentation, such as medical and industrial, due to its superior temperature stability and low power consumption. The LM224J is especially useful for operating remotely due to its wide temperature and voltage range. Additionally, the LM224J can be used in a variety of precision circuit configurations, such as timing and logarithmic circuits, high-temperature thermometers, and transimpedance amplifiers.The LM224J is also widely used in communication-related fields as it has a wide bandwidth of up to 2 MHz, with a low voltage noise of just 5 nV∕√Hz, low power of 4.5 mA/amplifier, and low distortion of 0.01%. The LM224J is commonly found in application areas such as controlled pre-emphasis circuits, RF attenuators, automatic-gain-control circuits, VoIP telephone receivers, mobile phone audio amplifiers, and audio signal preamplifiers.

Working Principle

The LM224J is an integrated circuit (IC) comprising four identical general-purpose operational amplifiers (op amps). Each op amp contains a pair of inputs, an output, and a power pin. The two inputs are labeled inverting and non-inverting, and current flows between them in order to produce a voltage difference. This voltage differential is amplified in accordance with the feedback ratio set by a device attached to the output of the op amp.The overall gain of the LM224J can be adjusted using the resistor values connected to the inverting and non-inverting inputs. This level of gain control is commonplace in precision circuit designs, such as usages in logarithmic and transimpedance amplifier circuits.

Features

The LM224J integrates four independent, internally compensated operational amplifiers on a single chip, which is often a better choice over conventional discrete designs. The LM224J is also fast, reliable, and operates with a low supply voltage of 5 VDC.Additional features that make the LM224J an attractive choice are its low output offset voltage, low power consumption, superior temperature stability (K-factor of 0.00005/°C), and wide frequency response. An integrated thermal shutdown feature protects the IC against excessive temperature conditions and preserves its electrical integrity.The LM224J is also cost-effective and full of features, such as offset compensation and single-supply operation. Furthermore, the LM224J’s flexible configuration makes it a good choice for applications where circuitry complexity is an issue. In conclusion, the LM224J is an effective and versatile monolithic four-channel operational amplifier. Developed by Linear Technology Corporation, it is widely applicable in instrumentation, OP amp, and buffer amplifiers. The LM224J is characterized by a wide temperature and voltage range, low consumption, and robust performance, making it an attractive choice in a variety of settings.

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