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5962R0052402VGA 5962R0052402VGA 564 National Semiconductor IC COMPARATOR 1 DIFF TO99-8 TO-99-8 Metal Can
LP339NE4 LP339NE4 39055 Texas Instruments COMPARATOR, 4 FUNC, 9000UV OFFSE Bulk
LM139AJB LM139AJB 32553 National Semiconductor IC COMPARATOR 4 DIFF 14CDIP 14-CDIP (0.300", 7.62mm)
MAX9075EXK+CMH MAX9075EXK+CMH 2617 Analog Devices Inc./Maxim Integrated SINGLE-SUPPLY COMPARATORS Strip
TLV1861DBVR TLV1861DBVR 9070 Texas Instruments IC COMPARATOR 1 GEN PUR SOT23-5 SC-74A, SOT-753
TLV1812DR TLV1812DR 15354 Texas Instruments IC COMPARATOR 2 GEN PUR 8SOIC 8-SOIC (0.154", 3.90mm Width)
TLV1811LDBVR TLV1811LDBVR 24903 Texas Instruments IC COMPARATOR 1 GEN PUR SOT23-5 SC-74A, SOT-753
TLV1822DR TLV1822DR 42588 Texas Instruments IC COMPARATOR 2 GEN PUR 8SOIC 8-SOIC (0.154", 3.90mm Width)
LM393DMR2 LM393DMR2 18901 onsemi IC COMP DUAL LV OFFSET MICRO-8 Tape & Reel (TR)
MC3302DR2 MC3302DR2 29599 onsemi IC COMPARATOR QUAD SNGL 14-SOIC Tape & Reel (TR)
KA393ADTF KA393ADTF 54994 Fairchild Semiconductor IC COMPARATOR 2 GEN PUR 8SOIC 8-SOIC (0.154", 3.90mm Width)
KA393DTF KA393DTF 16832 Fairchild Semiconductor IC COMPARATOR 2 GEN PUR 8SOIC 8-SOIC (0.154", 3.90mm Width)
KA393A KA393A 39472 Fairchild Semiconductor IC COMPARATOR 2 DIFF 8SOIC 8-SOIC (0.154", 3.90mm Width)
TLV3602DGKR TLV3602DGKR 37284 Texas Instruments IC COMPARATOR 2 GEN PUR 8VSSOP 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
TLV1821DBVR TLV1821DBVR 49466 Texas Instruments IC COMPARATOR 1 GEN PUR SOT23-5 SC-74A, SOT-753
7700801CA 7700801CA 28446 Texas Instruments QUAD DIFFERENTIAL COMPARATOR 14- 14-CDIP (0.300", 7.62mm)
LM2903DR-S LM2903DR-S 18694 Texas Instruments PROTOTYPE 8-SOIC (0.154", 3.90mm Width)
LM193 MDR LM193 MDR 35786 Texas Instruments LOW POWER LOW OFFSET VOLTAGE DUA Die
TLV3811YBGT TLV3811YBGT 30404 Texas Instruments IC COMPARATOR 1 GEN PUR 6DSBGA 6-XFBGA, DSBGA
TLV3811YBGR TLV3811YBGR 56757 Texas Instruments IC COMPARATOR 1 GEN PUR 6DSBGA 6-XFBGA, DSBGA

Comparators

1. What are Linear Comparators?

‌Basic Definition‌: A linear comparator is an electronic circuit that compares the magnitude relationship of two analog input signals and outputs a high/low level digital signal as the comparison result. When the input signal exceeds the preset threshold, the output is high level, otherwise the output is low level.

‌The Meaning of “Linear”: refers to the response stage before the input signal reaches the threshold, there is a linear relationship between the output and the input; but the overall function is still to trigger the state jump through the threshold, rather than continuously amplifying the signal.

 

2. What are the Key Characteristics of Linear Comparators?

‌Response Characteristics‌: The linear response to the input signal is limited to a specific range near the threshold, and it is essentially still a discontinuous switching device.

‌Difference from Hysteresis Comparator‌: Hysteresis comparators (such as Schmitt triggers) form a hysteresis loop through positive feedback to resist interference, while linear comparators do not have this feature, and the output may be falsely triggered due to noise.

‌Basis for Component Classification‌: Although it is called “linear”, its working mode involves state mutations and belongs to the category of nonlinear components; the “linear” in the name only describes the local characteristics before the threshold.

 

3. What are Linear Comparators Used for?

‌Signal Interface Conversion‌: used for threshold detection of analog signals in analog-to-digital converters (ADCs) to achieve the transition from analog to digital signals.

‌Protection and Monitoring Circuit‌: used for voltage monitoring, overvoltage/undervoltage protection systems, and real-time detection of power supply or signal anomalies.

‌Sensor Signal Processing‌: cooperate with sensors (such as photosensors and pressure sensors) to compare signals and trigger subsequent control logic.

 

4. Actual Product Examples for Linear Comparators

Some domestic analog chip manufacturers (such as Linearin) have launched high-performance comparator product lines, covering low power consumption, high precision, and other types, which are used in industrial control, the Internet of Things, and automotive electronics.

 

5. ‌Summary‌

Linear comparators are key threshold judgment devices in analog circuits. Their “linear” characteristics are reflected in the local linear response of the input before the threshold. They are suitable for scenarios that require precise level detection, but attention should be paid to anti-interference design to avoid false triggering.