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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Omschrijving Prijs 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-stocknr. 533-8388
FabrikantnummerLMV339M/NOPB
1,37 €
Each
Aantal stuks
General Purpose Surface Mount SOIC Single Open Collector 4 - 14 3 V 8.64 x 3.91 x 1.45mm 8.64mm 3.91mm 1.45mm -
RS-stocknr. 145-6529
FabrikantnummerLMV339M/NOPB
1,166 €
Each (In a Tube of 55)
Aantal stuks
General Purpose Surface Mount SOIC Single Open Collector 4 - 14 3 V 8.64 x 3.91 x 1.45mm 8.64mm 3.91mm 1.45mm -
RS-stocknr. 903-3696
FabrikantnummerLM393N
FabrikantON Semiconductor
0,676 €
Each (In a Tube of 50)
Aantal stuks
Differential Through Hole DIP Dual, Single Open Collector 2 1.4µs 8 2 → 36 V 10.15 x 6.35 x 3.3mm 10.15mm 6.35mm 3.3mm -
RS-stocknr. 796-7997
FabrikantnummerLM111JG
16,73 €
Each (In a Pack of 2)
Aantal stuks
General Purpose Through Hole CDIP Single Open Collector, Open Drain 1 115 ns, 165 ns 8 5 V 10.16 x 7.11 x 5.08mm 10.16mm 7.11mm 5.08mm -
RS-stocknr. 121-8671
FabrikantnummerLM2903D
0,303 €
Each (In a Tube of 75)
Aantal stuks
Differential Surface Mount SOIC Dual, Single Open Collector 2 1.3µs 8 3 → 28 V 4.9 x 3.91 x 1.58mm 4.9mm 3.91mm 1.58mm -
RS-stocknr. 528-347
FabrikantnummerTL331IDBVT
0,519 €
Each (In a Pack of 25)
Aantal stuks
General Purpose Surface Mount SOT-23 Dual, Single Open Collector 1 1.3µs 5 3 → 28 V 2.9 x 1.6 x 1.15mm 2.9mm 1.6mm 1.15mm -
RS-stocknr. 661-2577
FabrikantnummerLM239PWR
0,265 €
Each (In a Pack of 10)
Aantal stuks
Differential Surface Mount TSSOP Dual, Single Open Collector 4 1.3µs 14 3 → 28 V 5 x 4.4 x 1.15mm 5mm 4.4mm 1.15mm -
RS-stocknr. 661-2668
FabrikantnummerTL331IDBVR
0,422 €
Each (In a Pack of 10)
Aantal stuks
General Purpose Surface Mount SOT-23 Dual, Single Open Collector 1 1.3µs 5 3 → 28 V 2.9 x 1.6 x 1.15mm 2.9mm 1.6mm 1.15mm -
RS-stocknr. 145-6672
FabrikantnummerTLV3401ID
1,71 €
Each (In a Tube of 75)
Aantal stuks
Low Power Surface Mount SOIC Dual, Single Open Drain 1 - 8 3 → 15 V 4.9 x 3.91 x 1.58mm 4.9mm 3.91mm 1.58mm 88dB
RS-stocknr. 121-8871
FabrikantnummerLM393M/NOPB
0,613 €
Each (In a Tube of 95)
Aantal stuks
General Purpose Surface Mount SOIC Dual, Single Open Collector 2 1.3µs 8 3 to 28 V 4.9 x 3.9 x 1.45mm 4.9mm 3.9mm 1.45mm -
RS-stocknr. 517-2374
FabrikantnummerLM2903D
0,304 €
Each (In a Pack of 20)
Aantal stuks
Differential Surface Mount SOIC Dual, Single Open Collector 2 1.3µs 8 3 → 28 V 4.9 x 3.91 x 1.58mm 4.9mm 3.91mm 1.58mm -
RS-stocknr. 536-1388
FabrikantnummerLM393M/NOPB
1,11 €
Each
Aantal stuks
General Purpose Surface Mount SOIC Dual, Single Open Collector 2 1.3µs 8 3 → 28 V 4.9 x 3.9 x 1.45mm 4.9mm 3.9mm 1.45mm -
RS-stocknr. 661-2921
FabrikantnummerTLV3401ID
2,018 €
Each (In a Pack of 5)
Aantal stuks
Low Power Surface Mount SOIC Dual, Single Open Drain 1 - 8 3 → 15 V 4.9 x 3.91 x 1.58mm 4.9mm 3.91mm 1.58mm 88dB
RS-stocknr. 919-9364
FabrikantnummerLT6703HVIS5-3#TRMPBF
1,343 €
Each (On a Reel of 500)
Aantal stuks
Low Voltage Surface Mount TSOT-23 Single Open Collector 1 - 5 1.4 → 18 V 2.9 x 1.75 x 0.9mm 2.9mm 1.75mm 0.9mm -
RS-stocknr. 169-5573
FabrikantnummerLM239PWR
0,118 €
Each (On a Reel of 2000)
Aantal stuks
Differential Surface Mount TSSOP Dual, Single Open Collector 4 1.3µs 14 3 → 28 V 5 x 4.4 x 1.15mm 5mm 4.4mm 1.15mm -
RS-stocknr. 761-8908
FabrikantnummerLT6703HVIS5-3#TRMPBF
2,12 €
Each
Aantal stuks
Low Voltage Surface Mount TSOT-23 Single Open Collector 1 - 5 1.4 → 18 V 2.9 x 1.75 x 0.9mm 2.9mm 1.75mm 0.9mm -
RS-stocknr. 168-4868
FabrikantnummerTL331IDBVT
0,294 €
Each (On a Reel of 250)
Aantal stuks
General Purpose Surface Mount SOT-23 Dual, Single Open Collector 1 1.3µs 5 3 → 28 V 2.9 x 1.6 x 1.15mm 2.9mm 1.6mm 1.15mm -
RS-stocknr. 528-353
FabrikantnummerLM2903DR
0,271 €
Each (In a Pack of 25)
Aantal stuks
Differential Surface Mount SOIC Dual, Single Open Collector 2 1.3µs 8 3 → 28 V 4.9 x 3.91 x 1.58mm 4.9mm 3.91mm 1.58mm -
RS-stocknr. 121-9135
FabrikantnummerTL331IDBVR
0,185 €
Each (On a Reel of 3000)
Aantal stuks
General Purpose Surface Mount SOT-23 Dual, Single Open Collector 1 1.3µs 5 3 to 28 V 2.9 x 1.6 x 1.15mm 2.9mm 1.6mm 1.15mm -
RS-stocknr. 819-7124
FabrikantnummerADCMP354YKSZ-REEL7
FabrikantAnalog Devices
0,571 €
Each (In a Pack of 10)
Aantal stuks
General Purpose Surface Mount SC-70 Single Open Drain 1 30ns 4 2.25 → 5.5 V 2.2 x 1.35 x 1mm 2.2mm 1.35mm 1mm -
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