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Difference between LM324 Op Amp and Other Similar Models

Author: Irene Date: 28 Sep 2020  1263

lm358

I Introduction

This blog mainly discusses the difference between LM324 and LM324A, and whether they can replace each other in the circuit. Difference between LM324 and other models like LM741, LM358, LM324N, etc. are also discussed in this blog.

lm324Figure 1. LM324

Catalog

I Introduction

II LM324AD and LM324

2.1 Difference

2.2 Parameters

2.3 Can the Two Replace Each Other?

III Difference Between LM324 and LM741, LM358

IV Difference Between LM324 and LM318

V Difference Between LM324 and LM324N

VI Difference Between LM324 and LM324J

FAQ

Ordering & Quantity

II LM324AD and LM324

LM324 is a four-operational amplifier, which is a large category. It includes two independent, high-gain, internal frequency-compensated operational amplifiers. LM324 is suitable for single power supply with a wide range of power supply voltages, and is also suitable for dual power supply operating mode. Under the recommended operating conditions, the power supply current is independent of the power supply voltage. According to the suffix of LM324, A seed model (specification) is included.

The following will introduce to you the difference between lm324A and lm324, and whether they can be used interchangeably in the circuit.

2.1 Difference

The accuracy index of LM324A is slightly higher than that of LM324. Take TI's products as an example:

  • Offset Voltage

  The input offset voltage of the LM324A is 2mV (typical) to 3mV (maximum);

  The input offset voltage of the LM324 is 3mV (typical) to 7mV (maximum).

  • Offset Current

  The input offset current of the LM324A is 2nA (typical) to 30nA (maximum);

  The input offset current of the LM324 is 2nA (typical) to 50nA (maximum).

  • Input Bias Current

  The input bias current of LM324A is -15nA (typical) ~ -100nA (maximum);

  The input bias current of LM324 is -20nA (typical)~-250nA (maximum).

  

lm324 parameters
lm324 parameters
Figure 2. Parameters

2.2 Parameters

In fact, whether it is the N series or the A series of the LM324, they belong to the sub-series of the LM324. Only individual parameters such as input offset voltage and input offset current are slightly different, and the other parameters are the same.

 

Parameter

LM324A

LM324

Architecture

Bipolar

Bipolar

CMRR (Typ) (dB)

80

80

Features

Standard Amps

Standard Amps

GBW (Typ) (MHz)

1.2

1.2

Input bias current (Max) (pA)

100000

250000

Iq per channel (Typ) (mA)

0.175

0.175

Number of channels (#)

4

4

Offset drift (Typ) (uV/C)

7

-

Operating temperature range (C)

0 to 70

0 to 70

Output current (Typ) (mA)

40

40

Rail-to-rail

In to V-

In to V-

Rating

Catalog

Catalog

Slew rate (Typ) (V/us)

0.5

0.5

Total supply voltage (Max) (+5V=5, +/-5V=10)

32

32

Total supply voltage (Min) (+5V=5, +/-5V=10)

3

3

Vn at 1 kHz (Typ) (nV/rtHz)

35

35

Vos (offset voltage @ 25 C) (Max) (mV)

3

7

2.3 Can the Two Replace Each Other?

When discussing whether the two chips can be replaced with each other, we generally refer to the following situations:

  • Same Function, Same Package

The two are interchangeable. For example, as far as the commonly used chips LM741, LM324, LM339 are concerned, there are many manufacturers whose chip specifications are more or less the same, the package is the same, and the pin function is also the same.

  • Same Function, Different Package

Both can be replaced. However, the size and shape are different, so it can not be installed directly in the original position, such as dual in-line package and four-sided flat package.

  • Different Function, Same Package

The two cannot be interchanged. Because, packaging is the product's external specifications. For example, the 74ls373 latch and 74ls374 flip-flop cannot be simply interchanged.

Because the LM324 and LM324AD have the same function, but different packages, they can be replaced. However, this is only limited to the simulation circuit. If it is the actual circuit, due to the different packaging, you originally expected that the soldering position may not reach the size, so you need to replace the circuit.

  lm324

 Figure 3. LM324A

III Difference Between LM324 and LM741, LM358

These three types of op amps are all general purpose op amps, and their performance indicators are not very high. The specific differences are mainly reflected in the following aspects:

  • Number of Channels

  LM741: single op amp;

  LM358: dual op amp;

  LM324: quad op amp.

  • Working Voltage Range

  LM741: 7V~36V;

  LM358: 3V~32V;

  LM324: 3V~32V.

  • Unity Gain Bandwidth

  LM741: 1MHz

  LM358: 700kHz

  LM324: 1MHz

  • Precision

  The input offset voltage of these three types of op amps are:

  LM741: 6mV (maximum);

  LM358: 7mV;

  LM324: 7mV.

  • Input Impedance

The LM741 and LM358 are lower, and the input bias current is in the μA level, while the LM324 is 90nA, which is dozens of times higher than the previous two.

lm741

 Figure 4. LM741

IV Difference Between LM324 and LM318

The LM324 is a general-purpose op amp (quad op amps). Its slew rate is 0.4V/us and the gain-bandwidth product is 1.3MHz, which is suitable for general use.

LM318 is a high-speed operational amplifier (single op amp), its slew rate is 50V/us, and the gain-bandwidth product is 15MHz. Therefore, LM318 is suitable for amplifying signals with higher frequencies is suitable for amplifying signals with higher frequencies.

lm318

 Figure 5. LM318

V Difference Between LM324 and LM324N

LM324 has the same function as LM324N. The difference between the two is that the LM324 does not specify the package form, and the LM324N package is a plastic dual in-line package.

  lm324

 Figure 6. LM324N

P.S.

N suffix refers to the packaging:

  • N is DIP
  • M is SOIC
  • MT is TSSOP
  • J is ceramic DIP

VI Difference Between LM324 and LM324J

LM324J is a DIP package of LM324 produced by NS, which is itself LM324. Another package form of LM324 produced by NS is LM324M, and the package is SO8. Since different manufacturers have different suffix standards, you need to see the datasheet given by the certain manufacturer.


FAQ

  • What is lm324?

LM324 is a Quad op-amp IC integrated with four op-amps powered by a common power supply. The differential input voltage range can be equal to that of power supply voltage. ... Generally, op-amps can perform mathematical operations.

  • Which is the difference between lm324 and lm339?

The LM324 has a complementary output while the LM339 is open collector. In the complementary output, current can flow in either direction as required (either source or sink) while the open collector output can only sink current.

  • What is op amp use for?

Operational amplifiers are linear devices that have all the properties required for nearly ideal DC amplification and are therefore used extensively in signal conditioning, filtering or to perform mathematical operations such as add, subtract, integration and differentiation.

  • How does an op amp work?

  • What is lm324 used for?

LM324 IC Applications

The applications of IC LM324 include the following. By using this IC, the conventional op-amp applications can be implemented very simply. This IC can be used as oscillators, rectifiers, amplifiers, comparators etc.

Ordering & Quality

Photo Mfr. Part # Company Description Package PDF Qty Pricing
(USD)
LM3241TLX-NOPB LM3241TLX-NOPB Company:Texas Instruments Remark:IC REG CONV RF PWR 1OUT 6DSBGA Package:6-WFBGA, DSBGA
DataSheet
In Stock:3000
Inquiry
Price:
3000+: $0.31050
6000+: $0.29900
15000+: $0.28750
30000+: $0.28290
75000+: $0.27600
Inquiry
LM324AD LM324AD Company:Texas Instruments Remark:General Purpose Amplifier 4 Circuit 14-SOIC Package:14-SOIC (0.154"", 3.90mm Width)
DataSheet
In Stock:On Order
Inquiry
Price:
1+: $0.43000
10+: $0.34800
25+: $0.31840
100+: $0.21460
250+: $0.17760
500+: $0.16280
1000+: $0.12210
2500+: $0.11470
5000+: $0.10730
150+: $0.10960
Inquiry
LM324AD LM324AD Company:STMicroelectronics Remark:General Purpose Amplifier 4 Circuit 14-SO Package:14-SOIC (0.154"", 3.90mm Width)
DataSheet
In Stock:On Order
Inquiry
Price:
1+: $0.43000
10+: $0.34800
25+: $0.31840
100+: $0.21460
250+: $0.17760
500+: $0.16280
1000+: $0.12210
2500+: $0.11470
5000+: $0.10730
150+: $0.10960
Inquiry
LM324AD LM324AD Company:ON Semiconductor Remark:General Purpose Amplifier 4 Circuit 14-SOIC Package:14-SOIC (0.154"", 3.90mm Width)
DataSheet
In Stock:On Order
Inquiry
Price:
1+: $0.43000
10+: $0.34800
25+: $0.31840
100+: $0.21460
250+: $0.17760
500+: $0.16280
1000+: $0.12210
2500+: $0.11470
5000+: $0.10730
150+: $0.10960
Inquiry
LM324ADBR Company:Texas Instruments Remark:General Purpose Amplifier 4 Circuit 14-SSOP Package:14-SSOP (0.209"", 5.30mm Width)
DataSheet
In Stock:On Order
Inquiry
Price:
1494+: $0.16744
Inquiry
LM324ADR LM324ADR Company:Texas Instruments Remark:IC OPAMP GP 4 CIRCUIT 14SOIC Package:14-SOIC (0.154", 3.90mm Width)
DataSheet
In Stock:47500
Inquiry
Price:
2500+: $0.09610
5000+: $0.08990
12500+: $0.08246
25000+: $0.07936
62500+: $0.07750
Inquiry
LM324ADR2G LM324ADR2G Company:ON Semiconductor Remark:IC OPAMP GP 4 CIRCUIT 14SOIC Package:14-SOIC (0.154", 3.90mm Width)
DataSheet
In Stock:2500
Inquiry
Price:
2500+: $0.13082
5000+: $0.12238
12500+: $0.11394
Inquiry
LM324ADRG4 LM324ADRG4 Company:Texas Instruments Remark:General Purpose Amplifier 4 Circuit 14-SOIC Package:14-SOIC (0.154"", 3.90mm Width)
DataSheet
In Stock:On Order
Inquiry
Price:
1+: $0.46000
10+: $0.39400
25+: $0.36760
100+: $0.27300
250+: $0.23100
500+: $0.22050
1000+: $0.16275
2500+: $0.15225
5000+: $0.14175
10000+: $0.13440
25000+: $0.13125
62500+: $0.12915
100000+: $0.12600
Inquiry
LM324ADT LM324ADT Company:STMicroelectronics Remark:General Purpose Amplifier 4 Circuit 14-SO Package:14-SOIC (0.154"", 3.90mm Width)
DataSheet
In Stock:On Order
Inquiry
Price:
1+: $0.45000
10+: $0.36200
25+: $0.33120
100+: $0.22330
250+: $0.18480
500+: $0.16940
1000+: $0.12705
2500+: $0.11935
5000+: $0.11165
12500+: $0.10241
25000+: $0.09856
62500+: $0.09625
125000+: $0.09240
Inquiry
LM324ADTBG LM324ADTBG Company:ON Semiconductor Remark:General Purpose Amplifier 4 Circuit 14-TSSOP Package:14-TSSOP (0.173"", 4.40mm Width)
DataSheet
In Stock:On Order
Inquiry
Price:
1+: $0.42000
10+: $0.36200
25+: $0.33760
100+: $0.25060
250+: $0.21208
500+: $0.20244
1000+: $0.14942
2500+: $0.13978
5000+: $0.13014
Inquiry

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