The part number " LM358 ADR" belongs to Texas Instruments, a well-known semiconductor company. The LM358 series is a dual operational amplifier (op-amp) that is often used in a wide range of applications, including audio, instrumentation, and other electronic circuits.
Package Type of LM358 ADR:
The LM358ADR comes in an 8-pin Dual In-Line Package (DIP) or Small Outline Integrated Circuit (SOIC) package. The exact package type can vary depending on the variant, but for the "LM358ADR" specifically, it comes in an 8-pin SOIC (Small Outline Integrated Circuit) package.
Pinout and Functions for LM358ADR (8-Pin SOIC Package)
Here is the detailed explanation of the pins and their functions:
Pin Number Pin Name Pin Function Description 1 Offset Null This pin is used to connect an external resistor network to adjust the offset voltage. Typically, it's used in precision applications where the offset voltage needs to be minimized. 2 Inverting Input (Op-Amp 1) This is the inverting input for the first op-amp in the LM358. A signal is applied to this pin, and the op-amp will output an inverted version of the input signal depending on the circuit configuration. 3 Non-Inverting Input (Op-Amp 1) This is the non-inverting input for the first op-amp. The signal applied here is amplified in-phase by the op-amp. 4 V- (Negative Power Supply) This pin is the negative supply voltage pin. In typical circuits, this pin is connected to ground (0V), but in some applications, it can be connected to a negative voltage source. 5 Offset Null (Op-Amp 2) Similar to pin 1, this pin is used to adjust the offset voltage of the second op-amp. It is also used in precision applications to fine-tune the output of the second op-amp. 6 Output (Op-Amp 2) This is the output pin of the second op-amp. The amplified output signal is available here and is taken as the final output from the LM358. 7 Non-Inverting Input (Op-Amp 2) This is the non-inverting input for the second op-amp. Like pin 3, the signal applied here is amplified in-phase. 8 V+ (Positive Power Supply) This pin is the positive power supply for the LM358. It is typically connected to a positive voltage source to power the op-amps inside the IC.LM358 Pin Function Summary (in Tabular Format):
Pin Number Pin Name Description 1 Offset Null Used for offset voltage adjustment for Op-Amp 1. 2 Inverting Input (Op-Amp 1) Inverting input for the first op-amp in the IC. 3 Non-Inverting Input (Op-Amp 1) Non-inverting input for the first op-amp. 4 V- (Negative Supply) Negative power supply pin (usually ground). 5 Offset Null (Op-Amp 2) Used for offset voltage adjustment for Op-Amp 2. 6 Output (Op-Amp 2) Output for the second op-amp. 7 Non-Inverting Input (Op-Amp 2) Non-inverting input for the second op-amp. 8 V+ (Positive Supply) Positive power supply pin.FAQ (Frequently Asked Questions) about LM358ADR
What is the LM358ADR used for? The LM358ADR is used as a dual operational amplifier in analog circuits, amplifying signals in both inverting and non-inverting configurations.
How many op-amps are in the LM358ADR? The LM358ADR contains two independent operational amplifiers (Op-Amps).
What is the supply voltage for the LM358ADR? The LM358ADR operates typically with a single power supply between +3V to +32V or dual supplies from ±1.5V to ±16V.
What is the pin configuration for the LM358ADR? The LM358ADR comes in an 8-pin package with dual op-amps, where the first four pins relate to the first op-amp, and the second four pins to the second op-amp.
How do I adjust the offset voltage in the LM358ADR? You can adjust the offset voltage using the Offset Null pins (pin 1 and pin 5) by connecting an external resistor network to these pins.
Can I use the LM358ADR with a single power supply? Yes, the LM358ADR can be used with a single power supply, typically between +3V and +32V.
What is the difference between the inverting and non-inverting inputs? The inverting input (pin 2 or pin 6) amplifies the signal with a 180-degree phase shift, while the non-inverting input (pin 3 or pin 7) amplifies the signal without any phase shift.
What is the output voltage range of the LM358ADR? The output voltage is typically between 0V and V+ - 1.5V, depending on the load and input signal conditions.
What kind of circuit configurations can I use with LM358ADR? The LM358ADR can be used in several configurations, including inverting, non-inverting, differential, integrator, and summing amplifier circuits.
Can I use the LM358ADR for audio amplification? Yes, the LM358ADR can be used for audio amplification, though it is more suitable for low-power applications.
What is the quiescent current of the LM358ADR? The quiescent current (the current drawn when no input signal is present) is typically around 1mA per op-amp.
Can the LM358ADR operate at high frequencies? No, the LM358ADR is a low-to-moderate frequency op-amp, with a gain-bandwidth product of around 1 MHz.
How do I handle the power supply pins? Connect pin 4 (V-) to ground or a negative supply and pin 8 (V+) to your positive voltage supply to power the op-amps.
What is the recommended operating temperature range for the LM358ADR? The LM358ADR operates within a temperature range of -40°C to 85°C.
What is the load driving capability of the LM358ADR? The LM358ADR can drive a load of around 10kΩ or higher, but performance may degrade with lower resistance loads.
How do I calculate the gain of an op-amp circuit using LM358ADR? The gain in a non-inverting configuration is calculated as 1 + (R2/R1), and for an inverting configuration, it is - (R2/R1), where R1 and R2 are the feedback resistors.
Can the LM358ADR be used for precision applications? Yes, the LM358ADR is suitable for many precision applications, but for extremely high precision, additional offset trimming may be required.
What is the maximum output current for the LM358ADR? The LM358ADR can source or sink up to 20mA of output current per op-amp.
How do I connect the output of the LM358ADR to a load? The output pins (pin 6 for Op-Amp 2) can be directly connected to the load, ensuring that the load resistance is not too low to exceed the output current limit.
Is the LM358ADR available in different packages? Yes, the LM358ADR is available in various packages, including the 8-pin SOIC and 8-pin DIP packages.
This provides a comprehensive description of the LM358ADR's pin functions, its usage, and answers to common questions. Would you like further elaboration on any part of this?
