LM is an excellent Operational amplifier capable of driving DTL, RTL, TTL, or MOS logic. The output can switch voltages to 50 volts at currents to description/ordering information. The LM, LM, and LM are single high -speed voltage comparators. These devices are designed to operate from a. The LM LM and LM are voltage comparators that have input currents nearly a thousand times lower than devices like the LM or LM They are.

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Supply Current vs Supply Voltage Figure You can note that the Output voltage stays high when pin 2 has higher voltage than pin 7 and vice versa.

Life support devices or systems are devices or systems which, a are intended for surgical implant into the body, or b support or sustain life, and c whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user. The device is also designed to operate from dual or single supply voltage. Input Offset Current vs Temperature Figure 3.


Input Bias Current vs Differential input voltage Figure 5.

National Semiconductor

Offset Voltage vs Input Resistance Figure 4. If the voltage at the Non-Inverting Terminal pin 2 is higher than the Inverting Terminal pin 2the output pin 7 will also be high else the output will be low. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.

When not in use the pins 5 and 6 should be shorted as shown above.

The pins 5 and 6 on the Op-amp are used to set the balance voltage if you want to manually adjust the DC-Offset voltage. The transistor can also make the Load to be isolated from the system ground, so if you are looking for a Voltage comparator to drive loads of these specifications then this IC might be the right choice for you. A sample circuit is shown below in which the Inverting Terminal is set to 2.

LM Datasheet(PDF) – National Semiconductor (TI)

Review of LR circuits. TL — Programmable Reference Voltage. Common Dagasheet Limits vs Temperature Figure 6. Saturation voltage vs Current Figure 8. Input Bias Current vs Temperature Figure 2. Leakage Current vs Datashewt Figure Lab 9 in this note. Any Op-Amp can be made to work as a voltage comparator, but the LM proves itself to be advantages by housing an Output Transistor inside its package.


You can refer the other possible circuits from the LM datasheet given at bottom.

LM311 datasheet

An Emitter Output Circuit is shown below. Low input bias current: The response time specified is for a mV input step with 5mV over drive.

Documents Flashcards Grammar checker. The simplified schematics of the IC is shown below: The simplified schematics of the IC is shown below:. Normally these pins are not used since the Input Offset itself is much better controlled.

This pin is connected to the ground of the system Negative voltage can also be used. Submitted by admin on 6 March The LM can work on a Single supply voltage or in a dual supply mode. Supply Current vs Temperature Figure catasheet.

Offset voltage null capability. Current Saturation Voltage Figure