LM393TLX/NOPB

Current - Input Bias (Max):	0.25µA @ 5V
Base Part Number:	LM393
Supplier Device Package:	8-uSMD
Mounting Type:	Surface Mount
Package / Case:	8-WFBGA
Operating Temperature:	0°C ~ 70°C
Hysteresis:	--
Propagation Delay (Max):	700ns
CMRR, PSRR (Typ):	--
Current - Quiescent (Max):	2.5mA
Current - Output (Typ):	16mA @ 5V
Series:	--
Voltage - Input Offset (Max):	5mV @ 30V
Voltage - Supply, Single/Dual (±):	2 V ~ 36 V, ±1 V ~ 18 V
Output Type:	CMOS, DTL, ECL, MOS, Open-Collector, TTL
Number of Elements:	2
Type:	General Purpose
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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Linear-Comparators Application Field and Working Principle of LM393TLX/NOPB

Comparators are electronic devices used to compare two analog values and to produce a resulting output value depending on the comparison of the two inputs. The linear-comparators are the most commonly used type of comparator in applications such as voltage regulation and electronic motor speed control. The LM393TLX/NOPB is one of the most popular linear-comparators, widely used in various applications. This article discusses the application fields and working principle of the LM393TLX/NOPB.

Application Fields

The LM393TLX/NOPB is capable of performing different tasks, depending on the specific application. It can be used for voltage regulation, for developing temperature controlled circuits, for light level sensitive switching, for direct Motor Speed Control, for analog time delay controllers, and for sound level detection.

Voltage Regulation

The LM393TLX/NOPB is an ideal choice for voltage regulation. By simply connecting an op-amp, the comparator can be set up as a reference voltage and monitored by the microcontroller. The output can then be adjusted accordingly to ensure that the voltage is correctly regulated. This is a very beneficial feature, particularly in industrial and commercial applications.

Temperature Controlled Circuits

The LM393TLX/NOPB can be used to create temperature controlled circuits. This is achieved by connecting a temperature sensor, such as a thermistor, to the comparator\'s input. The output of the comparator can then be used to control a heating or cooling appliance in order to maintain a specific temperature.

Light Level Sensitive Switching

The LM393TLX/NOPB can be used to develop light level sensitive switching. By connecting and appropriately configuring a light sensor, the LM393TLX/NOPB is able to detect whether the light level is above or below a certain threshold. The output of the comparator then gets activated when the light level exceeds the threshold. This is commonly used in street lights to switch on and off in the presence of darkness.

Direct Motor Speed Control

The LM393TLX/NOPB can be used for direct motor speed control. By connecting a motor speed sensor, such as a tachometer, to the input of the comparator and setting a desired motor speed as a reference, the output of the comparator can be used to drive the motor at the desired speed.

Analog Time Delay Controllers

The LM393TLX/NOPB can also be used for analog time delay controllers. By setting a reference time, the comparator is able to compare the time delay and produce an output when the time delay reaches the set reference.

Sound Level Detection

The LM393TLX/NOPB can be used to detect sound levels. By connecting and appropriately configuring a sound sensor, the output of the comparator can be used to detect sound levels. This is a commonly used in alarm systems as well as telecommunications systems.

Working Principle

The working principle of the LM393TLX/NOPB involves two inputs, an inverting input (IN-) and a non-inverting input (IN+). The IN- is set at a certain voltage, the reference voltage, using a potential divider or other circuit. The other input, IN+, is used to compare the input voltage with the reference voltage. Depending on whether the input voltage is higher or lower than the reference voltage, the output of the LM393TLX/NOPB will be either a logic high or logic low.The LM393TLX/NOPB also features an open-collector output that can be used to drive an LED that indicates the state of the output. This LED is optional and can be omitted for applications that do not require an LED indicator.

Conclusion

The LM393TLX/NOPB is a popular linear-comparator used in many applications, including voltage regulation, temperature control, light level switching, motor speed control, analog time delay controllers, and sound level detection. It works by comparing two input voltages, one is the reference voltage, while the other is the input voltage. Depending on whether the input voltage is higher or lower than the reference voltage, the output will be either a logic high or logic low. The LM393TLX/NOPB can also optionally drive an LED to indicate the state of the output.

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