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LM358AP

Dual op-amp, improved grade, 3-32V, 1.1MHz GBW, 8-PDIP

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Manufacturer Part：

LM358AP

Package：

8-PDIP

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Description

Product Overview

The LM358AP from Texas Instruments is a dual general-purpose operational amplifier with improved specifications over the standard LM358. Operating from a single supply of 3V to 32V (or +/-1.5V to +/-16V), it features lower input offset voltage and better performance. Packaged in 8-PDIP.

Key Specifications

GBW 1.1MHz
Slew Rate 0.6V/us
Supply Voltage 3V to 32V (single) or +/-1.5V to +/-16V (dual)
Input Offset Voltage 2mV (typ, improved grade)
Input Bias Current 20nA (typ)
Output Current +/-20mA (typ)
Channels 2
Package 8-PDIP
Operating Temperature -40 to +85 C

Features

  • Improved grade with lower offset voltage
  • Single or dual supply operation
  • Input common-mode range includes ground
  • Output swings to ground (no pull-down resistor needed)
  • Internal frequency compensation
  • Pin-compatible with LM358, LM258, LM2904

Applications

  • Sensor signal conditioning
  • Battery-powered amplifier circuits
  • Comparator and window detector
  • Active filter circuits

The LM358AP from Texas Instruments is the improved-grade version of the industry-standard LM358 dual operational amplifier. The A suffix indicates tighter input offset voltage specification (2mV typical vs 3mV for the standard grade), making it more suitable for precision applications. Like the standard LM358, it operates from a single supply as low as 3V, with input common-mode range that includes ground and output that swings to ground without a pull-down resistor. This ground-referenced capability makes it ideal for single-supply sensor conditioning circuits. The 1.1MHz GBW and 0.6V/us slew rate are adequate for DC and low-frequency applications. Two independent amplifiers in a single 8-PDIP package provide compact signal processing. The LM358AP is pin-compatible with the LM358, LM258 (military temp), and LM2904 (automotive) versions.

The LM358AP uses a PNP input stage that allows the input common-mode range to extend to ground (0V), a key advantage over many other op-amps that require at least 1-2V headroom. The output stage uses a Darlington NPN pull-up and a common-emitter PNP pull-down. The PNP pull-down allows the output to swing to within a few millivolts of ground in single-supply applications, unlike rail-to-rail op-amps that typically bottom out at 10-50mV. However, the output cannot swing to the positive rail (typically 1.5V below VCC). The 1.1MHz GBW means the open-loop gain drops to unity at 1.1MHz, providing approximately 20dB gain at 110kHz and 40dB gain at 11kHz. The internal compensation capacitor provides stability for closed-loop gains of 1 or higher without external components.

Pin Name Function
1 1OUT Amplifier 1 output
2 1IN- Amplifier 1 inverting input
3 1IN+ Amplifier 1 non-inverting input
4 GND Ground / negative supply
5 2IN+ Amplifier 2 non-inverting input
6 2IN- Amplifier 2 inverting input
7 2OUT Amplifier 2 output
8 VCC Positive supply (3-32V)
  • Single-supply sensor conditioning with ground-referenced input and output
  • Battery-powered amplifier with 3V minimum supply and low quiescent current
  • Improved-precision comparator with 2mV input offset voltage
  • Active low-pass filter for signal conditioning in industrial control
Model Manufacturer Key Difference
LM358N TI Standard grade, 3mV offset, same function
LM2904N TI Automotive grade, -40 to 125C
MCP6002-I/P Microchip Rail-to-rail, 1.8-6V, lower voltage
TL072CP TI JFET input, +/- supply, higher performance
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