LM324 Quad OP-AMP IC

LM324 Op-Amp Pin Configuration

Pin Number	Pin Name	Description
1	OUTPUT1	Output of Op-Amp 1
2	INPUT1-	Inverting Input of Op-Amp 1
3	INPUT1+	Non-Inverting Input of Op-Amp 1
4	VCC	正供应电压
5	INPUT2+	Non-Inverting Input of Op-Amp 2
6	INPUT2-	Inverting Input of Op-Amp 2
7	OUTPUT2	Output of Op-Amp 2
8	输出3	Output of Op-Amp 3
9	INPUT3-	Inverting Input of Op-Amp 3
10	INPUT3+	Non-Inverting Input of Op-Amp 3
11	Vee，Gnd	Ground or Negative Supply Voltage
12	INPUT4+	Non-Inverting Input of Op-Amp 4
13	INPUT4-	Inverting Input of Op-Amp 4
14	输出4	Output of Op-Amp 4

LM324 Quad Op-Amp IC Features and Specifications

• Integrated with four Op-Amps in a single package
• Wide power supply Range

1. Singe supply – 3V to 32V
2. Dual supply – ±1.5V to ±16V

• Low Supply current – 700uA
• Single supply for four op-amp operation enables reliable operation
• 操作环境温度 - 0˚C至70°C
• 焊接销温度 - 260°C（持续10秒 - 规定）

LM324 Equivalent Quad Op-Amp ICs

LM3900, LMC660,LM339，lt014，LM2900, LM324A, LM324E, LM324-N, LM324W

Brief Description

LM324is aQuad op-amp ICintegrated with four op-amps powered by a common power supply. The differential input voltage range can be equal to that of power supply voltage. The default input offset voltage is very low which is of magnitude 2mV. The operating temperature ranges from 0˚C to 70˚C at ambient whereas the maximum junction temperature can be upto 150˚C. Generally, op-amps can perform mathematical operations.

LM324 Explanation with Example

考虑一下，运行带有可变负载的电动机。随着负载的增加，电流增加，进而增加电动机的温度。因此，如果温度升高，我们的工作是关闭系统。在这里，OP放大器作为阳性比较器运行。查看Difference between Op-Amp and Comparator. Here athermistordoes the job whose resistance varies with temperature.

Below will be a simple circuit connection to sense temperature and control a system.

At Temperature = 25˚C, RT=10kὨ. Inv Input=1.32V and Non-Inv Input=2.36V.

Thus, Output is HIGH and it can drive a motor ON through a transistor or relay.

At Temperature = above 70˚C, RT=3kὨ. Inv Input=1.32V and Non-Inv Input=1.06V.

Thus, Output is LOW and it can drive a motor OFF through a transistor or relay.

如果要在电动机的三个或四个位置监测温度，则可以在下面的配置中使用LM324。两个温度传感RT1和RT2的方向示例，

Supply connection:

Single Supply Connection

Dual Supply Connection

以上是单一和双电源连接的电源配置。

应用程序:

• Transducer Amplifiers
• Filter circuits, Voltage followers
• Integrator, Differentiator, Summer, adder, Voltage follower, etc.,
• DC gain blocks
• 比较器（循环控制与法规）

2D模型