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LM358N

Dual general-purpose op-amp, 1MHz, 3-32V single supply, GND-referenced, PDIP-8

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Manufacturer Part：

LM358N

Package：

PDIP-8 (9.81 x 6.35 x 4.57mm, 2.54mm pitch, through-hole)

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Product Categories：

Integrated Circuits ICs, Microcontrollers & Processors

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Description

Product Overview

The LM358N from Texas Instruments is the dual version of the LM324 — two general-purpose op-amps with single-supply operation (3V-32V), ground-referenced inputs, and 1MHz bandwidth in an 8-pin PDIP package.

Key Specifications

Number of Channels	2 (dual, independent)
Supply Voltage Range	3V to 32V (single) or ±1.5V to ±16V (dual)
Gain-Bandwidth Product	1MHz typical
Slew Rate	0.5V/µs typical
Open-Loop Voltage Gain	100dB typical
Input Offset Voltage	2mV typical, 7mV max
Input Bias Current	45nA typical
Input Common-Mode Range	0V to V+−1.5V (includes GND)
Output Voltage Swing	0V to V+−1.5V
Supply Current (both amps)	350µA typical
Operating Temperature	0°C to +70°C
Package	PDIP-8 (9.81 x 6.35mm)

Features

Two internally compensated op-amps in one 8-pin package
Single-supply operation: 3V to 32V
Input common-mode range includes ground
Output swings to ground (no negative supply needed)
350µA total supply current

Applications

Single-supply signal conditioning
Sensor amplifier interfaces
DC gain blocks
Comparators
Active filters

Product Introduction:LM358N Product Introduction

The LM358N from Texas Instruments is the dual version of the LM324, containing two independent general-purpose op-amps in a compact 8-pin DIP package. It shares all the LM324’s key advantages: single-supply operation from 3V to 32V, input common-mode range including ground, output swinging to near ground, and low 350µA total supply current. The 8-pin DIP footprint is smaller than the LM324’s 14-pin, making the LM358 ideal when only one or two op-amp channels are needed. The pinout follows the industry-standard dual-op-amp convention (same as NE5532, TL072, LM833), allowing easy upgrades to higher-performance op-amps. The 1MHz GBW and 0.5V/µs slew rate are adequate for DC signal conditioning, audio preamplification, and low-frequency active filtering. At $0.20/1ku, the LM358 is one of the most cost-effective op-amps available. The N suffix denotes the PDIP-8 through-hole package.

Working Principle:LM358N Working Principle

The LM358N operates identically to half of the LM324. Each op-amp uses a PNP differential input stage that allows the common-mode range to include ground. The class AB output stage can source current (pulling output toward V+) and sink current (pulling output toward ground), with the output able to swing to within ~5mV of ground when sinking small currents. In single-supply operation, the signal must remain between 0V and V+−1.5V at both input and output. The internal compensation capacitor ensures stability in voltage-follower (unity gain) configuration without external components. Closed-loop bandwidth = GBW / noise_gain; at gain=10, BW ≈ 100kHz. The 0.5V/µs slew rate limits the full-power bandwidth: at 5V peak output, BW_max = 0.5/(2π×5) ≈ 16kHz. For AC-coupled applications, a V+/2 bias voltage is needed; for DC ground-referenced signals (sensors, battery monitors), no bias is required.

Pin Description:LM358N Pin Definition and Functions

Pin	Name	Type	Description
1	1OUT	Output	Op-amp 1 output
2	1IN−	Input	Op-amp 1 inverting input
3	1IN+	Input	Op-amp 1 non-inverting input
4	GND / V−	Power	Ground or negative supply
5	2IN+	Input	Op-amp 2 non-inverting input
6	2IN−	Input	Op-amp 2 inverting input
7	2OUT	Output	Op-amp 2 output
8	VCC	Power	Positive supply (3V to 32V)

LM358N uses the PDIP-8 (N) package with industry-standard dual op-amp pinout: Pin 1 = Output A, Pin 2 = Inverting Input A (-), Pin 3 = Non-inverting Input A (+), Pin 4 = GND/VEE, Pin 5 = Non-inverting Input B (+), Pin 6 = Inverting Input B (-), Pin 7 = Output B, Pin 8 = VCC. This pinout is shared by all dual op-amps in DIP-8 including LM358, LM2904, RC4558, NE5532, and TL072. The single-supply operation (3V-32V or ±1.5V to ±16V) allows inputs to go to ground without phase reversal. Output swings to within 0-20mV of ground in single-supply configuration. For surface-mount, LM358DR (SOIC-8) provides identical pinout.

Application Scenarios:In which products and applications isLM358N used

Non-Inverting Amp: Sensor (0-0.5V) → 1IN+; Rf=90kΩ, Rg=10kΩ; Gain=10; 1OUT = 0-5V; VCC=5V single supply
Comparator: Voltage sense → 1IN+; reference → 1IN−; no feedback; 1OUT drives relay driver or LED
Differential Amp: Bridge sensor → 1IN+ and 1IN−; Rf/Rg set gain; 1OUT = amplified difference
AC-Coupled Preamp: VCC=9V; two 100kΩ divider → V+/2 = 4.5V at 1IN+; AC signal through cap → Rin → 1IN−; Rf feedback

Alternative Models:What chips are recommended as replacements for LM358N

Model	Manufacturer	Key Difference	Package	Specs
LM358AN	TI	Improved version with lower input offset voltage 2mV max vs 7mV for precision signal conditioning	DIP-8	1.1MHz/0.6V/µs
LM358B	TI	Modern upgrade: 36V supply, 1.2MHz GBW, 3mV offset, and rail-to-rail output swing	DIP-8	1.2MHz/36V
LM324N	TI	Quad op-amp version (4 channels) in DIP-14 for multi-stage signal chain applications	DIP-14	1.1MHz/4-ch
LM2904N	TI	Automotive-grade -40 to +125C version with enhanced ESD protection for harsh environments	DIP-8	1.1MHz/-40-125C
LMV358IDR	TI	Low-voltage 2.7-5.5V version with 1MHz GBW for 3.3V and battery-powered systems	SOIC-8	1MHz/2.7-5.5V
NE5532P	TI	Dual low-noise audio op-amp with 10MHz GBW for audio preamp and filter applications	DIP-8	10MHz/9V/µs

LM358 is the industry-standard dual general-purpose op-amp with 1.1MHz GBW and 3-32V single-supply operation. Input common-mode range includes ground for single-supply sensor interfacing. LM358B offers modern 36V rail-to-rail output. For quad needs, LM324 provides 4 channels. For audio, NE5532 offers 10MHz GBW and low noise. LM2904 extends temperature range to 125C for automotive applications.