LM239AMX

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Linear-comparators are integrated analog circuits commonly used for the purpose of comparing two voltage signals or discriminating between analog or logic states. The LM239AMX is a 14-pin, dual-channel comparator of the Linear-comparator family, designed, manufactured and supplied by Texas Instruments. With its varyingly improved performance compared to other products in the series, the LM239AMX is a highly efficient device applicable in several contexts.

Application Field

The LM239AMX has a wide application due to its dual operational amplifiers and separate inputs, allowing effective connection of different circuits by superimposing them. A few of its functionalities are as follows:

• Voltage-control hysterisis.
• Signal de-bouncing.
• Timing circuits.
• Motor and control circuits.
• Analog computers.
• Adding subtracting circuits.

The LM239AMX is also applicable in situation where open-loop voltage-level detection and timing operations are needed, such as motor-control systems, thermostats and many other possibilities. It is also used in many diverse industrial context, as it can be effectively applied to analyzing, measuring and controlling temperature, humidity, pressure, light and sound.

Working Principle

The LM239AMX has two independent, high-gain matched-transistor circuits, each having one input and one output. On each comparator, one of the two inputs is the reference input in which a fixed or adjustable voltage is applied. The other input is the inverting input, to which the voltage to be measured is applied. The ratio between the two voltages dictates the output state - either LOW or HIGH.

The LM239AMX also has several technical characteristics that improve its performance and efficiency, such as the Low-Voltage Outputs that reduce static power dissipation and the typical Rise and Fall Times which indicate how quickly the output state will change.

The LM239AMX is a fast and reliable application module that serves a variety of functions, and it is often used as a handy replacement for several operational amplifiers and transistors.

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