LM311N Integrated Circuits (ICs) |
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Allicdata Part #: | 497-1570-5-ND |
Manufacturer Part#: |
LM311N |
Price: | $ 0.00 |
Product Category: | Integrated Circuits (ICs) |
Manufacturer: | STMicroelectronics |
Short Description: | IC VOLTAGE COMPARATOR 8-DIPComparator General Purp... |
More Detail: | N/A |
DataSheet: | LM311N Datasheet/PDF |
Quantity: | 19090 |
Lead Free Status / RoHS Status: | |
Moisture Sensitivity Level (MSL): |
Series: | -- |
Packaging: | Tube |
Lead Free Status / RoHS Status: | -- |
Part Status: | Obsolete |
Moisture Sensitivity Level (MSL): | -- |
Type: | General Purpose |
Number of Elements: | 1 |
Output Type: | DTL, MOS, Open-Collector, Open-Emitter, RTL, TTL |
Voltage - Supply, Single/Dual (±): | 5 V ~ 30 V, ±2.5 V ~ 15 V |
Voltage - Input Offset (Max): | 7.5mV @ ±15V |
Current - Input Bias (Max): | 0.25µA @ ±15V |
Current - Output (Typ): | 50mA |
Current - Quiescent (Max): | 7.5mA |
CMRR, PSRR (Typ): | -- |
Propagation Delay (Max): | -- |
Hysteresis: | -- |
Operating Temperature: | 0°C ~ 70°C |
Package / Case: | 8-DIP (0.300", 7.62mm) |
Mounting Type: | Through Hole |
Supplier Device Package: | 8-DIP |
Base Part Number: | LM311 |
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LM311N application field and working principle
The LM311N is a part of a linear family that includes comparators and are used extensively in the field of instrumentation. These devices are used for applications such as detecting overflow of data, where an output is necessary to indicate when a certain trigger level has been exceeded. LM311N is mostly used for applications where precision is required and as it operates as a difference amplifier, it is considered to be more stable than linear amplifiers.
The LM311N comparator is used in a variety of applications across many industries such as test, measurement and control. These include circuits that sense temperature, humidity, pressure, light, sound, current and voltage. These devices can also be used in industrial automation and agricultural automation, like the sensing of current and air-flow in crop irrigation.
The LM311N is an integrated circuit that receives two input signals and compares the absolute value of their amplitudes. Based on this comparison, it provides an output. It is often used to regulate whether a system should be "on" or "off". When the voltage of the negative input is higher than the voltage of the positive input, the output will turn on and remain on until the condition is reversed. As a result, the LM311N can be employed as a single threshold comparator in circuits where a simple "on/off" comparison is required.
Working principles
The structure of the LM311N includes two independent negative input stages, a single positive input stage, a difference amplifier and output stage. The two negative input stages are coupled to the single positive input stage, with the resulting output being an inverted version of the differential voltage. This differential voltage is then processed in the difference amplifier, and the output is used to indicate the comparison between the two input signals.
The working principle of the LM311N differs slightly depending on the configuration that is chosen. In the ‘on’ configuration, the input voltage of the negative input is higher than the input voltage of the positive input then the output will remain in that state. In the ‘off’ configuration, if the input voltage of the negative input is lower than that of the positive input then the output will remain in that state.
In addition, the LM311N can be used as an open drain comparator, which will remain in an ‘open’ state unless the voltage of the negative input is higher than the positive input. When this happens, the output signal will be driven low and the comparator will remain in that state until the condition is reversed and the signal returns to the ‘open’ state.
Conclusion
The LM311N is a versatile device used throughout a range of industries, including industrial automation, test and measurement, and control applications. As a linear difference amplifier, the LM311N is used to precisely compare two input signals and produce an accurate output signal. This makes it a useful component for any system that requires an off/on or open drain comparison.
The specific data is subject to PDF, and the above content is for reference
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