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LM324AMX/NOPB

Quad op amp, 3-32V single supply, 1MHz GBP, 700µA Iq, ground-sensing input, SOIC-14

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Manufacturer Part：

LM324AMX/NOPB

Package：

SOIC-14 (8.65 x 6 mm)

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Description

Product Overview

The LM324AMX/NOPB from Texas Instruments is a quad general-purpose operational amplifier in a 14-pin SOIC package. It operates from a single supply of 3 V to 32 V or dual supplies of ±1.5 V to ±16 V, with a unity-gain bandwidth of 1 MHz. The device features very low supply current drain (700 µA total), input common-mode voltage range that includes ground, and is specifically designed for single-supply applications.

Key Specifications

Number of Channels 4
Supply Voltage Range 3 V to 32 V (single), ±1.5 V to ±16 V (dual)
Gain Bandwidth Product 1 MHz
Slew Rate 0.5 V/µs
Input Offset Voltage 7 mV (max)
Input Bias Current 45 nA (typ)
Supply Current 700 µA (total)
DC Voltage Gain 100 dB
Operating Temperature 0°C to 70°C
Package SOIC-14

Features

  • Internally frequency compensated for unity gain
  • Large DC voltage gain: 100 dB
  • Wide bandwidth: 1 MHz
  • Very low supply current drain independent of voltage
  • Low input bias current: 45 nA
  • Input common-mode range includes ground
  • Output voltage swing: 0 V to V+ – 1.5 V
  • Compatible with all forms of logic

Applications

  • Transducer amplifiers
  • DC gain blocks
  • Single-supply signal conditioning
  • Active filters and oscillators
  • Battery-powered instrumentation

The LM324AMX/NOPB is a quad operational amplifier from the industry-standard LM324-N series by Texas Instruments. It consists of four independent high-gain internally frequency-compensated amplifiers designed to operate from a single power supply over a wide voltage range. A key differentiator is the input common-mode voltage range that includes ground, allowing the device to operate directly from 5 V logic supplies without requiring negative supplies. The very low supply current of 700 µA makes it ideal for battery-operated applications. The A suffix indicates tighter specifications for input offset voltage and offset current.

Each of the four amplifier channels in the LM324AMX/NOPB uses a PNP differential input pair that allows the common-mode input range to extend to ground, enabling true single-supply operation. The input stage feeds a high-gain intermediate stage with internal compensation capacitors for unity-gain stability. The output stage is a class AB configuration that can swing to within 1.5 V of the positive rail and essentially to ground, providing maximum output dynamic range in single-supply configurations. All four amplifiers share common supply rails but operate independently. The 700 µA total quiescent current is essentially independent of supply voltage magnitude.

Pin Name Type Function
1 OUT1 Output Amplifier 1 output
2 IN1- Input Amplifier 1 inverting input
3 IN1+ Input Amplifier 1 non-inverting input
4 VCC Power Positive supply voltage
5 IN2+ Input Amplifier 2 non-inverting input
6 IN2- Input Amplifier 2 inverting input
7 OUT2 Output Amplifier 2 output
8 OUT3 Output Amplifier 3 output
9 IN3- Input Amplifier 3 inverting input
10 IN3+ Input Amplifier 3 non-inverting input
11 GND/VEE Power Ground or negative supply
12 IN4+ Input Amplifier 4 non-inverting input
13 IN4- Input Amplifier 4 inverting input
14 OUT4 Output Amplifier 4 output
  • 5V logic system signal conditioning
  • Battery-powered portable instrumentation
  • Transducer bridge amplifiers
  • Window comparators and voltage monitors
  • Active RC filters and oscillators
Manufacturer Part Number Package Notes
STMicroelectronics LM324ADT SOIC-14 Pin-compatible equivalent
onsemi LM324DR2G SOIC-14 Pin-compatible equivalent
Texas Instruments LM324B SOIC-14 Next-gen, lower offset, wider temp
Microchip MCP6004-I/SL SOIC-14 Lower voltage, rail-to-rail alternative
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Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

Shipping & Payment

All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

Service & Packaging

All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

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