Introduction

As far as we are aware, 555 timers, single logic gates, microcontrollers, microprocessors, voltage regulators, and op-amps are all available in a variety of configurations. These ICs include the LM741, LM7805, LM35, LM324 IC, LM337 IC, LM338 IC, LM339 IC, LM1117, and many others.

The most common integrated circuit (IC) in electronic sensors and many other circuits is the LM358, and you will learn how to use it and different DIY electronics projects blog.

Catalog

ⅠLM358 Overview

LM358 is a dual op-amp IC integrated with two op-amps powered by a common power supply. It can be considered as one-half of LM324 Quad op-amp which contains four op-amps with a common power supply. The differential input voltage range can be equal to the power supply voltage. The default input offset voltage is very low which is of magnitude 2mV. The typical supply current is 500uA independent of the supply voltage range and a maximum current of 700uA. The operating temperature ranges from 0˚C to 70˚C at ambient whereas the maximum junction temperature can be up to 150˚C.

ⅡLM358 3D Model

LM358 Symbol

Figure1-LM358 Symbol

LM358 footprint

Figure2-LM358 footprint

LM358 3D Model

Figure3-LM358 3D Model

ⅢLM358 Pinout 

Figure4-LM358 Pinout

Ⅳ LM358 Pin Configuration

ⅤLM358 Features

• It consists of 2 OP-AMP internally.
• The output voltage swing is high.
• The large DC voltage gain is around 100 dB.
• Wider bandwidth in 1 MHz(Temperature compensated).
• The supply current drain is very low.
• The wider power supply, in the single power supply, is 3V to 32 V while the dual power supply is +or-1.5 V to +or- 16 V.
• 2mV low input offset voltage.
• Common mode input voltage range comprises ground.
• The differential input voltage range is similar to the power supply voltage.
• Internally frequency compensated for unity gain.
• Short circuit protected outputs.
• Soldering pin temperatures at 260 C.
• The available package is TO-99, SOIC, DSBGA, and CDIP.

Ⅵ LM358 Packages 

The available package is TO-CAN, SOT-23(5), DSBGA, and PDIP. all of these packages along with their dimensions and part number are given below:

PACKAGES:

PDIP(8) - 9.81

DSBGA(8) - 1.31  

TO-CAN(8) - 9.08  

SOIC(8) - 4.90  

2D-Model and Dimensions

Figure5-package

Ⅶ LM358 Spcifications

Ⅷ LM358 Applications

LM358 Dual Op-Amp IC is widely used in many real-life applications. Some of the major applications of LM358 IC are listed below:

• DC gain block
• General Signal conditioning
• General Signal Amplification
• Transducer Amplifier
• Operational Amplifier Circuit
• Current Loop Transmitters for 4 to 20 mA
• Active Filters
• Comparators (Loop control & regulation)
• Integrator, Differentiator, Adder, Voltage follower, etc.
• It can be used in real-life applications like shock alarm circuits and dark sensor circuits.

Application Examples

• Operational Amplifier

A signal conditioner, DC amplifier, filter, and device for use with external feedback elements like capacitors and resistors between its output and input terminals are all examples of operational amplifiers or op-amps for short. Op-amps are DC-coupled high-gain voltage amplifying devices.

The op-amp can be employed as a differential amplifier, integrator, or summer depending on the feedback configuration it has—whether resistive, capacitive, or both.

• LM358 as Comparator

In electronics, a comparator is a device that compares two voltages or currents and outputs a digital signal indicating which is larger. It has two analog input terminals, V+ and V-, and one binary digital output that is low when V- is greater and high when V+ is greater.

The LM358 comparator IC consists of two inbuilt operational amplifiers (Op-Amp), which means two comparators in a single IC.

To use LM358 as a comparator, we need to connect the power source with the Vcc and GND pin of the LM358 IC to activate the IC. Then, we need to provide two input voltages to the Op-Amp for comparison. Now, we can get an output from the Op-Amp.

To understand it more clearly, let’s see the working of circuits below.

Digital Dark Sensor Using LM358

Figure6-Digital Dark Sensor Using LM358

Working

The resistivity of the LDR, an electrical component, changes as light is shined onto it. When no light is incident on it, the LDR offers the highest resistance, generating a signal across the non-inverting terminal of the Op-amp that is used to turn on the LED when darkness is detected. When light is incident on it, the resistivity decreases, and when no light is incident on it, the LDR offers the highest resistance.

If the LED stays on even when no darkness is present, you can turn the 10K potentiometer preset until the LED turns OFF to adjust the circuit's sensitivity.

• 12V Battery Monitoring Circuit

Battery Level Indicator Circuit Using Dual Op Amp IC LM358 to Monitor the 3 essential levels of a battery i.e. Low, Normal, and Full.

Figure7-12V Battery Monitoring Circuit

Working

The circuit keeps track of the 12V battery voltage and shows the battery's charge state, with an LED lighting up to indicate low voltage, normal voltage, or full voltage. The red/yellow and yellow/green LEDs' ON/OFF values are changed by the potentiometer. For instance, the green LED activates at 12V, and the red LED at 11V. The yellow LED continues to glow when the battery voltage is still greater than 11V and less than 12V. This circuit can be adjusted slightly to monitor voltages such as 4 volts, 6 volts, 24 volts, and others.

Ⅸ Advantages

The following are the advantages of LM 358 IC:

• Two operational amplifiers are compensated internally. we can use both op-amps at a time or if we need only one op-amp we can use it
• Two internally compensated for OP-AMP
• Removes the necessity of dual supplies
• Power drains suitable for the operation of the battery
• Permits direct sensing close to GND and VOUT
• Compatibility with all forms of logic

Ⅹ LM35810 Circuits Diagrams

• LM358 LED Driver

Figure8-LM358 LED Driver

• LM358 TTL drive circuit

Figure9-LM358 TTL drive circuit

• LM358 Square Wave Oscillator

Figure10-LM358 Square Wave Oscillator

• LM358 Hysteretic Comparator

Figure11- LM358 Hysteretic Comparator

• LM358 Current Monitoring

Figure12- LM358 Current Monitoring

• LM358 Voltage Follower

Figure13- LM358 Voltage Follower

• LM358 Power Amplifier Peripheral Circuit

Figure14- LM358 Power Amplifier Peripheral Circuit

• LM358 Voltage Controlled Oscillator (VCO)

Figure15- LM358 Voltage Controlled Oscillator (VCO)

• LM358 Fixed Current Source

Figure16- LM358 Fixed Current Source

• LM358 Pulse Generator

Figure17- LM358 Pulse Generator