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. 145-0192
FabrikantnummerLM293P
0,291 €
Each (In a Tube of 50)
Aantal stuks
Differential Through Hole PDIP Dual, Single Open Collector 2 1.3µs 8 3 → 28 V 9.81 x 6.35 x 4.57mm 9.81mm 6.35mm 4.57mm -
RS-stocknr. 100-0752
FabrikantnummerLM393D
0,267 €
Each (In a Tube of 75)
Aantal stuks
General Purpose 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. 533-8237
FabrikantnummerLM339N/NOPB
2,21 €
Each
Aantal stuks
General Purpose Through Hole MDIP Dual, Single Open Collector 4 1.3µs 14 3 → 28 V 19.05 x 6.35 x 3.3mm 19.05mm 6.35mm 3.3mm -
RS-stocknr. 866-0219
FabrikantnummerLM311N/NOPB
0,582 €
Each (In a Tube of 40)
Aantal stuks
General Purpose Through Hole PDIP Dual, Single DTL, MOS, RTL, TTL 1 200ns 8 5 V 10.16 x 6.6 x 4.57mm 10.16mm 6.6mm 4.57mm -
RS-stocknr. 168-8801
FabrikantnummerTS881ILT
0,464 €
Each (On a Reel of 3000)
Aantal stuks
Low Power Surface Mount SOT-23 Single Push-Pull 1 160ns 5 0.85 → 5.5 V 2.2 x 1.35 x 1mm 2.2mm 1.35mm 1mm 78dB
RS-stocknr. 805-1365
FabrikantnummerLM311DR2G
FabrikantON Semiconductor
0,313 €
Each (On a Tape of 25)
Aantal stuks
General Purpose Surface Mount SOIC Dual, Single CMOS 1 200ns 8 36 V 5 x 4 x 1.5mm 5mm 4mm 1.5mm -
RS-stocknr. 661-2589
FabrikantnummerLM2903DGKR
0,292 €
Each (In a Pack of 10)
Aantal stuks
Differential Surface Mount MSOP Dual, Single Open Collector 2 1.3µs 8 3 → 28 V 3 x 3 x 0.97mm 3mm 3mm 0.97mm -
RS-stocknr. 166-1847
FabrikantnummerLM393M
FabrikantON Semiconductor
0,103 €
Each (In a Tube of 90)
Aantal stuks
Differential Surface Mount SOIC Dual, Single Open Collector 2 1.4µs 8 2 → 36 V 5 x 4 x 1.5mm 5mm 4mm 1.5mm -
RS-stocknr. 145-9012
FabrikantnummerMCP6542-E/P
FabrikantMicrochip
0,429 €
Each (In a Tube of 60)
Aantal stuks
General Purpose Through Hole PDIP Single Push-Pull 2 - 8 1.6 → 5.5 V 0.4 x 0.28 x 0.195in 10.16mm 0.28in 4.95mm 70dB
RS-stocknr. 121-9502
FabrikantnummerAP331AWRG-7
FabrikantDiodesZetex
0,054 €
Each (On a Reel of 3000)
Aantal stuks
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-stocknr. 806-2817
FabrikantnummerLM339AM
FabrikantON Semiconductor
0,346 €
Each (In a Tube of 54)
Aantal stuks
General Purpose Surface Mount SOP Dual, Single Open Collector 4 1.3µs 14 2 → 36 V 8.76 x 4.2 x 1.65mm 8.76mm 4.2mm 1.65mm -
RS-stocknr. 178-7406
FabrikantnummerLM2903PT
0,108 €
Each (On a Reel of 4000)
Aantal stuks
Low Power Surface Mount TSSOP Dual, Single CMOS, DTL, ECL, MOS, TTL 2 1.3µs 8 2 → 36 V 4.5 x 3.1 x 1.05mm 4.5mm 3.1mm 1.05mm -
RS-stocknr. 660-6711
FabrikantnummerLM2903QDRQ1
0,384 €
Each (In a Pack of 10)
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. 912-9863
FabrikantnummerADCMP601BKSZ-R2
FabrikantAnalog Devices
3,601 €
Each (On a Reel of 250)
Aantal stuks
High Speed Surface Mount SC-70 Single CMOS, TTL 1 0.005µs 6 2.5 → 5.5 V 2.2 x 1.35 x 1mm 2.2mm 1.35mm 1mm 50dB
RS-stocknr. 812-0449
FabrikantnummerTPS3700DDCT
1,552 €
Each (In a Pack of 10)
Aantal stuks
Window Surface Mount TSOT-23 Single Open Drain 2 2.2µs 6 1.8 → 18 V 3.05 x 1.75 x 1mm 3.05mm 1.75mm 1mm -
RS-stocknr. 178-5160
FabrikantnummerLM2903DT
0,086 €
Each (On a Reel of 2500)
Aantal stuks
General Purpose Surface Mount SOIC Dual, Single CMOS, DL, ECL, MOS, TTL 2 1.3µs 8 2 → 36 V 5 x 4 x 1.25mm 5mm 4mm 1.25mm -
RS-stocknr. 914-2973
FabrikantnummerLM393APSR
0,255 €
Each (In a Pack of 25)
Aantal stuks
Dual Differential Surface Mount SOIC Dual, Single CMOS, MOS, Open Collector, Open Drain, TTL 2 1.3µs 8 Maximum of 36 V 5 x 4 x 1.5mm 5mm 4mm 1.5mm -
RS-stocknr. 179-1620
FabrikantnummerLM293DR
0,168 €
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. 661-2781
FabrikantnummerLM2901N
0,32 €
Each (In a Pack of 10)
Aantal stuks
Differential Through Hole PDIP Dual, Single Open Collector 4 1.3µs 14 3 → 28 V 19.3 x 6.35 x 4.57mm 19.3mm 6.35mm 4.57mm -
RS-stocknr. 165-5527
FabrikantnummerTS3704CDT
0,237 €
Each (On a Reel of 2500)
Aantal stuks
Low Power Surface Mount SOIC Dual, Single Push-Pull 4 2µs 14 2.7 → 16 V 8.75 x 4 x 1.65mm 8.75mm 4mm 1.65mm 80dB
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