Allicdata Part #: | 296-6604-5-ND |
Manufacturer Part#: |
LM339AD |
Price: | $ 0.00 |
Product Category: | Integrated Circuits (ICs) |
Manufacturer: | Texas Instruments |
Short Description: | IC QUAD DIFF COMP 14 -SOIC |
More Detail: | Comparator Differential CMOS, MOS, Open-Collector,... |
DataSheet: | LM339AD Datasheet/PDF |
Quantity: | 3106 |
Lead Free Status / RoHS Status: | Lead free / RoHS Compliant |
Moisture Sensitivity Level (MSL): | 1 (Unlimited) |
Specifications
Series: | -- |
Packaging: | Tube |
Lead Free Status / RoHS Status: | -- |
Part Status: | Active |
Moisture Sensitivity Level (MSL): | -- |
Type: | Differential |
Number of Elements: | 4 |
Output Type: | CMOS, MOS, Open-Collector, TTL |
Voltage - Supply, Single/Dual (±): | 2 V ~ 30 V, ±1 V ~ 15 V |
Voltage - Input Offset (Max): | 3mV @ 30V |
Current - Input Bias (Max): | 0.25µA @ 5V |
Current - Output (Typ): | 20mA |
Current - Quiescent (Max): | 2.5mA |
CMRR, PSRR (Typ): | -- |
Propagation Delay (Max): | -- |
Hysteresis: | -- |
Operating Temperature: | 0°C ~ 70°C |
Package / Case: | 14-SOIC (0.154", 3.90mm Width) |
Mounting Type: | Surface Mount |
Supplier Device Package: | 14-SOIC |
Base Part Number: | LM339 |
Description
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<p>LM339AD is a comparator integrated circuit (IC) with four independent comparators inside. Comparators are a type of circuit that can compare two scale of electric potential and can output a digital signal when the voltage of one input is higher than, lower than, or equal to the voltage of the other input. Comparators are widely used in various types of applications and fields, and the LM339AD is no exception. Here, we will discuss the application fields of LM339AD and its working principle.</p><p><strong>Application Fields of LM339AD</strong></p><p>LM339AD is commonly used as a comparison and voltage sensing device. It is most commonly used to provide current-limiting protection circuits, to limit the output voltage of power supply, and to detect and verify when a device exceeds its preset voltage threshold. The LM339AD circuit can also be used in voltage-mode and frequency to voltage converter, communication interface circuit and clock synchronization circuits, waveform width measurement, alarm and low level detector, fan control, etc.</p><p>The LM339AD has many advantages due to its simple structure. First, it is able to detect small deviations from its preset input voltage, and it is also able to run at low supply voltage (in single supply) and is relatively stable. It also requires minimal design time, and can perform the same action for both static and dynamic operations. It also does not require any external parts for its functioning, and can be easily integrated into a variety of products.</p><p><strong>Working Principle of LM339AD</strong></p><p>The working principle of the LM339AD boils down to two terminals, the non-inverting terminal (+) and the inverting terminal (-). The two terminals are used to compare two voltage levels, with the + terminal as the reference and the - terminal as the signal. The non-inverting terminal (+) is always set to a fixed reference potential, while the inverting terminal (-) receives the signal which is to be compared.</p><p>When the signal at - terminal is higher than the reference potential of + terminal, the signal will be considered to be higher than the reference, and the output signal of the IC will turn high. Similarly, if the signal on - is lower then the reference signal on +, the output will be considered to be lower than the reference and the output signal of the IC will be turned low.</p><p>In addition, the device also has a hysteresis voltage, which means it will ignore any minor changes in the reference and signal potentials. This means that once the output is high, a significantly larger voltage needs to be applied on the - terminal for the output to turn low. The same is true for the opposite direction. This helps smooth out the output, and prevents any possible issues with the circuit.</p><p>In conclusion, LM339AD is an integrated circuit that is used for comparison and voltage sensing. It has many advantages, such as being able to detect small deviations from its preset input, running at low supply voltage, requiring minimal design time, and the ability to perform the same action for static and dynamic operations. The device’s working principle is based on comparing two signals on the non-inverting and inverting terminals, with the + terminal providing the reference, and the - terminal providing the signal that is to be compared. The device also has a built-in hysteresis feature, which helps smoothen its output and prevents any possible issues.</p>The specific data is subject to PDF, and the above content is for reference
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