LM324 IC Pin Configuration and Its ApplicationsThe operational amplifier LM324 IC can work like a normal comparator, and it comprises four independent op-amps internally. This IC has designed with low-power, bandwidth and high stability for operating with single power supply over extensive voltage ranges. The range of operating voltages of this IC includes 3.0 V for low and 32 V for high. The range of common mode input mainly comprises the negative voltage supply, thus removing the requirement of outside biasing components in several applications. The range of output voltage also comprises the negative voltage supply. This article discusses an overview of LM324 IC comparator.What is an LM324 IC Comparator?The LM324 IC consists of 14-pins with four independent op-amps in one package. These electronic voltage amplifiers are available in high gain with differential input as well as a single output. The voltage difference among the input terminals of the IC is very less than the output voltage. These comparators operate with a single power supply and need of dual supply is removed. These ICs can be utilized as comparators, oscillators, amplifiers, rectifiers, etc. By using this IC several applications can be implemented very easily. IC LM324 Pin ConfigurationLM324 IC Pin ConfigurationThe pin configuration of the IC LM324 is shown below, and the function of each pin of this IC is discussed below.Pin1 (OUTPUT1): O/p of the 1st comparatorPin2 (INPUT1-): Inverting i/p of the 1st comparatorPin3 (INPUT1+): Non-inverting i/p of the 1st comparatorPin4 (VCC): Positive supply voltagePin5 (INPUT2+): Non-inverting i/p of the 2nd comparatorPin6 (INPUT2-): Inverting i/p of the 2nd comparatorPin7 (OUTPUT2-): O/p of the 2nd comparatorPin8 (OUTPUT3): O/p of the 3rd comparatorPin9 (INPUT3-): Inverting i/p of the 3rd comparatorPin10 (INPUT3+): Non-inverting i/p of the 3rd comparatorPin11 (GND, VEE): Ground or negative supply voltagePin12 (INPUT4+): Non-inverting i/p of the 4th comparatorPin13 (INPUT4-): Inverting i/p of the 4th comparatorPin14 (OUTPUT4): O/p of the 4th comparatorLM324 IC based Cell phone Detector Circuit DiagramThe circuit diagram of LM324 IC based cell phone detector is shown below. The designing of this circuit is very simple and can be used to detect the cell phone from a distance of 10 to 20 meters away. The range of detection can mainly depend on the mobile phone because each mobile has their own signal generation capacity. This circuit only detects the encoded signal, not the voice contents. The encoded signals can be received when the cell phone receives a call or do calls while sending and receiving the SMS. This circuit can be used for multipurpose like searching for a lost phone, finding a cell phone in prohibited areas.LM324 IC based Cell phone Detector Circuit DiagramThe circuit is very simple to built using basic electrical and electronic components. The LM324 operational amplifier is the heart of the circuit. This IC contains four high gain operational amplifiers. But this circuit uses only single op-amps from the four op-ampsA transistor 2N4401 is connected at the output of the LM324 to make the LED as well as piezo buzzer ON. The connection of LEDs count can also be improved up to 25. The circuit can be operated at 4.5Volts to 12Volts DC. If the circuit is operated below 9V (lower voltage) then we need to replace the value of a current limiting resistor from 470 ohms to 220 ohms for all the LEDs in the circuit. The circuit sensitivity can be changed by a variable resistor with the value 100K. LM324 IC PackagesThe LM324 IC is available in four different packages along with individual dimensionsTSSOP package with 5 x 4.4 mmSOIC package with 8.65 X 3.91 mmCDIP package with 19.56 X 6.67mmPDIP package with 19.177 X 6.35mmLM324 IC RatingsThe ratings of voltage, current, and power of an integrated circuit specify its power necessities.The power ratings of LM324 IC include the following.The input voltage of LM324 ranges from -0.3 to 32 VDifferential i/p voltage of LM324 is 32 vThe input current of LM324 is 50 mAPower dissipation of LM324 is 1130 mWStorage temperature of LM324 ranges from -65 to 150 0CSupply voltage of LM324 is 32 VLM324 IC FeaturesThe features of this IC include the following.Frequency compensated within IC for unity gainDC voltage gain is large that is 100 dBBandwidth is Wide that is 1 MHzThe range of power supply is wide, and for single voltage supply ranges from 3volts to 32voltsBasically independent for supply voltageThe range of differential i/p voltage is equivalent to the voltage power supply.O/p voltage swing ranges from 0V to V+ & − 1.5VLM324 IC ApplicationsThe applications of IC LM324 include the following.Generally, this comparator is employed in the robot-like line followingBy using this IC, the conventional op-amp applications can be implemented very simply.This IC can be used as oscillators, rectifiers, amplifiers, comparators etc.Thus, this is all about an overview of LM324 IC. From the above information finally we can conclude that there are many advantages by using this IC which includes the LM324 IC is utilized like both operational amplifier as well as a comparator, and it is an electronic voltage amplifier with high-gain. Furthermore, any doubts regarding this or any technical information please get back to us by commenting in the comment section below. Here is a question for you, what are the unique characteristics of LM324 IC? Share This Post: Facebook Twitter Google+ LinkedIn Pinterest Post navigation ‹ Previous What is LM393 IC : Pin Configuration, Circuit and Its WorkingNext › Why Do We Use Semiconductors Instead of Conductors in Electronic Circuit Design Related Content What is RL Circuit : Working & Its Uses What is a Current Mirror : Circuit & Its Working What is a Form Factor & Its Significance What is Peak Inverse Voltage & Its WorkingAdd Comment Cancel replyComment:Name * Email * Website