LM158/LM258/LM358 运算放大器数据手册

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"LM158-LM258-LM358是低功耗双运算放大器，具有内部频率补偿，高直流电压增益，宽带宽，极低的电源电流，低输入偏置电流和输入失调电压等特点。它们适用于单电源供电的各类应用，包括传感器放大器和直流增益模块等。" 运算放大器，简称运放，是电子电路中的关键组件，其主要功能是放大输入信号，并可通过反馈网络调整输出与输入的关系。LM158-LM258-LM358系列是专为单电源供电设计的低功耗双运算放大器，特别适合于电源电压范围较广的应用场景。这些运放的特点包括： 1. 内部频率补偿：这意味着运放已经内置了补偿电路，能确保在各种工作条件下稳定运行，避免振荡并保持良好的闭环增益和带宽特性。 2. 高直流电压增益：100dB的直流电压增益意味着它可以显著放大微弱的信号，使电路对小信号的响应更加敏感。 3. 宽带宽：在单位增益配置下，带宽达到1.1MHz（温度补偿），保证了高速信号处理能力。 4. 低电源电流：运放的电源电流几乎与电源电压无关，这降低了整体系统的能耗。 5. 低输入偏置电流：20nA的输入偏置电流在很大程度上减少了由于输入电流不平衡导致的误差。 6. 低输入失调电压：2mV的输入失调电压意味着在两输入端之间几乎没有需要校准的电压差，提高了精度。 7. 低输入失调电流：2nA的输入失调电流进一步降低了由于输入电流不匹配引起的误差。 8. 输入共模电压范围包括地：这意味着运放可以处理零点附近的信号，增强了应用的灵活性。 9. 差分输入电压范围等于电源电压：运放能够处理接近电源电压幅度的差分信号，增加了其在各种应用中的实用性。 10. 大输出电压摆幅：从0V到(VCC-1.5V)，这样的输出电压范围允许运放驱动大负载或在电源电压范围内提供足够的动态范围。这些特点使得LM158-LM258-LM358系列在单电源供电的系统中表现出色，如在传感器放大器中，可以将微弱的传感器信号放大到可读取的水平；在直流增益块中，可以实现精确的电压或电流增益；并且因为它们能在接近地电位的范围内工作，所以也能用于需要地面参考的信号处理。 LM158-LM258-LM358系列是低功耗、高性能运算放大器的代表，适用于各种需要高效能、低能耗运算放大器的电子设计。无论是在工业控制、医疗设备、通信系统还是消费电子产品中，都能找到它们的身影。

Absolute maximum ratings LM158-LM258-LM358

4/20

2 Absolute maximum ratings

Table 1. Absolute maximum ratings

Symbol Parameter LM158,A LM258,A LM358,A Unit

Supply voltage +/-16 or 32 V

Input voltage 32 V

Differential input voltage 32 V

tot

Power dissipation

(1)

1. Power dissipation must be considered to ensure that the maximum junction temperature (T

) is not

exceeded.

500 mW

Output short-circuit duation

(2)

2. Short-circuits from the output to V

can cause excessive heating if V

> 15 V. The maximum output

current is approximately 40 mA independent of the magnitude of V

. Destructive dissipation can result

from simultaneous short-circuits on all amplifiers.

Infinite

Input current

(3)

3. This input current only exists when the voltage at any of the input leads is driven negative. It is due to the

collector-base junction of the input PNP transistor becoming forward biased and thereby acting as input

diode clamps. In addition to this diode action, there is also NPN parasitic action on the IC chip. This

transistor action can cause the output voltages of the Op-amps to go to the V

voltage level (or to ground

for a large overdrive) for the time during which an input is driven negative.

This is not destructive and normal output is restored for input voltages above -0.3 V.

50 mA

oper

Operating free-air temperature range -55 to +125 -40 to +105 0 to +70 °C

stg

Storage temperature range -65 to +150 °C

Maximum junction temperature 150 °C

thja

Thermal resistance junction to ambient

(4)

(5)

SO-8

MiniSO-8

TSSOP8

DIP-8

4. Short-circuits can cause excessive heating and destructive dissipation.

5. R

are typical values.

125

190

120

°C/W

thjc

Thermal resistance junction to case

SO-8

MiniSO-8

TSSOP8

DIP-8

°C/W

ESD

HBM: human body model

(6)

6. Human body model: A 100pF capacitor is charged to the specified voltage, then discharged through a

1.5kΩ resistor between two pins of the device. This is done for all couples of connected pin combinations

while the other pins are floating.

300 V

MM: machine model

(7)

7. Machine model: A 200pF capacitor is charged to the specified voltage, then discharged directly between

two pins of the device with no external series resistor (internal resistor < 5Ω). This is done for all couples of

connected pin combinations while the other pins are floating.

200 V

CDM: charged device model

(8)

8. Charged device model: all pins and the package are charged together to the specified voltage and then

discharged directly to the ground through only one pin. This is done for all pins.

1.5 kV

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