The LM358AP from Texas Instruments is a dual operational amplifier (op-amp) IC that contains two independent op-amp circuits in a single 8-pin DIP package. Here is an overview of the LM358AP, including its specifications, main uses, features, application fields, working principle, and potential alternative models:


LM358AP Overview:

  • Manufacturer: Texas Instruments
  • IC Type: Dual Operational Amplifier
  • Package: 8-pin DIP (Dual Inline Package)
  • Number of Op-Amps: 2 independent op-amp circuits
  • Supply Voltage: Typically operates from a single power supply up to around 32V
  • Low Power Consumption: Suitable for battery-powered applications
  • Input Offset Voltage: Typically in the millivolt range
  • Input Bias Current: Typically low for most applications

Main Uses:

  • Voltage Amplification: Amplifying voltage signals in various circuits
  • Signal Filtering: Implementing low-pass, high-pass, or band-pass filters
  • Voltage Comparators: Configuring as comparators for signal comparison
  • Voltage Followers: Utilized as buffer stages to isolate loads from sources


  • Dual Op-Amp: Contains two independent op-amp circuits in a single package
  • Low Input Bias Current: Minimizes input loading effects
  • Wide Supply Voltage Range: Compatible with various power supply configurations
  • High Open-Loop Gain: Provides precision amplification capabilities
  • Compatible with Single Supply: Can operate from a single supply voltage, making it versatile in various applications

Application Fields:

  • Signal Conditioning: Used in sensor interfaces, signal amplification, and filtering
  • Active Filters: Employed in various filter designs for frequency selection
  • Voltage References: Utilized for setting voltage levels in circuits
  • Comparator Circuits: Configured for comparing different voltage levels

Working Principle:

  • Each op-amp within the LM358AP independently amplifies the voltage difference between its inputs according to its gain.
  • Op-amps are widely used in feedback configurations to perform functions like amplification, filtering, and voltage comparison.
  • The LM358AP's design allows for flexible integration into various analog and signal processing circuits.

Alternative Models:

  • LM324: Quad operational amplifier IC offering four independent op-amp circuits
  • LM741: Classic general-purpose operational amplifier with a single op-amp configuration
  • LM358N: Another dual operational amplifier IC with similar characteristics

The LM358AP dual op-amp IC from Texas Instruments is a versatile component extensively used in analog circuit design for its reliability, ease of use, and broad applicability in a range of electronic systems. For detailed circuit design, application notes, and operational guidelines, consulting the official datasheet provided by Texas Instruments or checking their website is recommended.

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