Comparators

What is a Comparator?

A Comparator is a circuit which accepts two voltages or currents and then switches the output showing which is bigger. Comparators are found in components like analogue to digital converters. Comparators are like operational amplifiers except a comparator is designed to operate with positive feedback and output saturated at one power rail or the other.

How a Comparator works.
A comparator samples two input pins and turns on the output when identifying a difference or similarity.
An example is when you have a minus voltage on the inverting Pin and a plus non-inverting. When the voltage, on the non-inverting equals the inverting voltage the Pin turns on. Normally the output Pin is open and switches to ground when the comparator is activated.

Why use a Comparator?
The primary use of a comparator is converting analog to digital (ADC). Two supply voltage are applied and the difference determines a high or low digital signal.

Types of Comparator.
Current sense, Differential / Dual differential, Dual / Dual CMOS, Dual voltage / General voltage, General purpose, Ground sense, High speed / high-speed CMOS, Low current CMOS, Low power / low voltage / low-power CMOS, Micro power, Nano power, Precision, Push/pull output, Quad differential, Rail to rail, Voltage, Window.

Mounting Types.
Surface mount
Through hole
Comparator power supply types.
Dual
Single

Various package types, pins, sizes, channels per chip, PSRR (power supply rejection ratio), CMRR (common mode rejection ratio) are all available.

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Beskrivning Pris Comparator Type Mounting Type Package Type Power Supply Type Output Type Number of Channels per Chip Typical Response Time Pin Count Typical Single Supply Voltage Dimensions Length Width Height Typical CMRR
RS-artikelnummer 165-8583
Tillv. art.nrAZV331KTR-G1
VarumärkeDiodesZetex
0,883 kr
Each (On a Reel of 3000)
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Low Voltage Surface Mount SOT-23 Single Open Collector 1 - 5 2.5 → 5.5 V 3.1 x 1.7 x 1.3mm 3.1mm 1.7mm 1.3mm -
RS-artikelnummer 921-0739
Tillv. art.nrLMV331SE-7
VarumärkeDiodesZetex
2,651 kr
Each (In a Pack of 50)
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General Purpose Surface Mount SOT-353 Single Open Collector 1 - 5 2.7 → 5.5 V 2.2 x 1.35 x 1mm 2.2mm 1.35mm 1mm -
RS-artikelnummer 146-0951
Tillv. art.nrLMV393S-13
VarumärkeDiodesZetex
0,839 kr
Each (On a Reel of 2500)
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General Purpose Surface Mount SOIC Single Open Collector 2 - 8 2.7 → 5.5 V - - - - -
RS-artikelnummer 122-3374
Tillv. art.nrAS331KTR-G1
VarumärkeDiodesZetex
0,769 kr
Each (On a Reel of 3000)
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Low Power Surface Mount SOT-23 Dual, Single Open Collector 1 1.3µs 5 2 → 36 V 3.02 x 1.7 x 1.3mm 3.02mm 1.7mm 1.3mm -
RS-artikelnummer 122-0368
Tillv. art.nrAP331AWG-7
VarumärkeDiodesZetex
0,826 kr
Each (On a Reel of 3000)
Enheter
General Purpose Surface Mount SOT-25 Dual, Single Open Collector 1 1.3µs 5 2 to 36 V 3.1 x 1.7 x 1.3mm 3.1mm 1.7mm 1.3mm -
RS-artikelnummer 169-0652
Tillv. art.nrAPX393M8G-13
VarumärkeDiodesZetex
1,503 kr
Each (On a Reel of 2500)
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General Purpose Surface Mount MSOP Single Open Drain 2 - 8 2.5 → 5.5 V 3.1 x 3.1 x 0.95mm 3.1mm 3.1mm 0.95mm -
RS-artikelnummer 165-8320
Tillv. art.nrLMV331W5-7
VarumärkeDiodesZetex
0,883 kr
Each (On a Reel of 3000)
Enheter
General Purpose Surface Mount SOT-25 Single Open Collector 1 - 5 2.7 → 5.5 V 3.1 x 1.7 x 1.3mm 3.1mm 1.7mm 1.3mm -
RS-artikelnummer 828-7539
Tillv. art.nrAS331KTR-G1
VarumärkeDiodesZetex
2,283 kr
Each (In a Pack of 50)
Enheter
Low Power Surface Mount SOT-23 Dual, Single Open Collector 1 1.3µs 5 2 → 36 V 3.02 x 1.7 x 1.3mm 3.02mm 1.7mm 1.3mm -
RS-artikelnummer 168-9580
Tillv. art.nrLM2903AQS-13
VarumärkeDiodesZetex
0,872 kr
Each (On a Reel of 2500)
Enheter
Dual Differential Surface Mount SO Dual, Single CMOS, MOS, TTL 2 300ns 8 2 → 36 V 4.495 x 3.95 x 1.5mm 4.5mm 3.95mm 1.5mm -
RS-artikelnummer 170-8925
Tillv. art.nrAS393MTR-G1
VarumärkeDiodesZetex
0,677 kr
Each (On a Reel of 4000)
Enheter
Low Power Surface Mount SOIC Dual, Single Open Collector 2 1.3µs 8 2 → 36 V 5.1 x 4 x 1.45mm 5.1mm 4mm 1.45mm -
RS-artikelnummer 168-9588
Tillv. art.nrLM2903M8-13
VarumärkeDiodesZetex
0,593 kr
Each (On a Reel of 2500)
Enheter
Dual Differential Surface Mount MSOP Dual, Single CMOS, MOS, TTL 2 300ns 8 2 → 36 V 3.1 x 3.05 x 0.95mm 3.1mm 3.05mm 0.95mm -
RS-artikelnummer 133-3372
Tillv. art.nrLM2903AQS-13
VarumärkeDiodesZetex
2,537 kr
Each (In a Pack of 50)
Enheter
Dual Differential Surface Mount SO Dual, Single CMOS, MOS, TTL 2 300ns 8 2 → 36 V 4.495 x 3.95 x 1.5mm 4.5mm 3.95mm 1.5mm -
RS-artikelnummer 921-0736
Tillv. art.nrLMV393S-13
VarumärkeDiodesZetex
0,858 kr
Each (In a Pack of 50)
Enheter
General Purpose Surface Mount SOIC Single Open Collector 2 - 8 2.7 → 5.5 V - - - - -
RS-artikelnummer 165-8321
Tillv. art.nrLMV331SE-7
VarumärkeDiodesZetex
0,815 kr
Each (On a Reel of 3000)
Enheter
General Purpose Surface Mount SOT-353 Single Open Collector 1 - 5 2.7 → 5.5 V 2.2 x 1.35 x 1mm 2.2mm 1.35mm 1mm -
RS-artikelnummer 738-5339
Tillv. art.nrAPX393M8G-13
VarumärkeDiodesZetex
3,64 kr
Each (In a Pack of 25)
Enheter
General Purpose Surface Mount MSOP Single Open Drain 2 - 8 2.5 → 5.5 V 3.1 x 3.1 x 0.95mm 3.1mm 3.1mm 0.95mm -
RS-artikelnummer 921-0732
Tillv. art.nrLMV331W5-7
VarumärkeDiodesZetex
2,835 kr
Each (In a Pack of 50)
Enheter
General Purpose Surface Mount SOT-25 Single Open Collector 1 - 5 2.7 → 5.5 V 3.1 x 1.7 x 1.3mm 3.1mm 1.7mm 1.3mm -
RS-artikelnummer 170-8921
Tillv. art.nrAS339MTR-G1
VarumärkeDiodesZetex
0,936 kr
Each (On a Reel of 4000)
Enheter
Low Power Surface Mount SOIC Dual, Single Open Collector 4 1.3µs 14 2 → 36 V 8.75 x 4 x 1.5mm 8.75mm 4mm 1.5mm -
RS-artikelnummer 828-7533
Tillv. art.nrAS339MTR-G1
VarumärkeDiodesZetex
2,434 kr
Each (In a Pack of 50)
Enheter
Low Power Surface Mount SOIC Dual, Single Open Collector 4 1.3µs 14 2 → 36 V 8.75 x 4 x 1.5mm 8.75mm 4mm 1.5mm -
RS-artikelnummer 121-9502
Tillv. art.nrAP331AWRG-7
VarumärkeDiodesZetex
0,792 kr
Each (On a Reel of 3000)
Enheter
General Purpose Surface Mount SOT-25R Dual, Single Open Collector 1 1.3µs 5 2 to 36 V 3.1 x 1.7 x 1.3mm 3.1mm 1.7mm 1.3mm -
RS-artikelnummer 133-3381
Tillv. art.nrLM2903M8-13
VarumärkeDiodesZetex
0,60 kr
Each (In a Pack of 50)
Enheter
Dual Differential Surface Mount MSOP Dual, Single CMOS, MOS, TTL 2 300ns 8 2 → 36 V 3.1 x 3.05 x 0.95mm 3.1mm 3.05mm 0.95mm -