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. 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. 145-4483
FabrikantnummerLM393MX
FabrikantON Semiconductor
0,098 €
Each (On a Reel of 3000)
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. 145-5224
FabrikantnummerLM311DR2G
FabrikantON Semiconductor
0,144 €
Each (On a Reel of 2500)
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. 761-4463
FabrikantnummerLM393M
FabrikantON Semiconductor
0,242 €
Each (In a Pack of 10)
Aantal stuks
General Purpose Surface Mount SOP Dual, Single TTL 2 1.5µs 8 36 V 4.92 x 3.95 x 1.55mm 4.92mm 3.95mm 1.55mm -
RS-stocknr. 802-1639
FabrikantnummerNCV2903DMR2G
FabrikantON Semiconductor
0,376 €
Each (In a Pack of 25)
Aantal stuks
General Purpose Surface Mount MSOP Dual, Single Open Collector 2 1.5µs 8 2 → 36 V dc 3.1 x 3.1 x 0.95mm 3.1mm 3.1mm 0.95mm -
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. 805-1365
FabrikantnummerLM311DR2G
FabrikantON Semiconductor
0,324 €
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. 121-6487
FabrikantnummerNCV2903DMR2G
FabrikantON Semiconductor
0,169 €
Each (On a Reel of 4000)
Aantal stuks
General Purpose Surface Mount MSOP Dual, Single Open Collector 2 1.5µs 8 2 → 36 V dc 3.1 x 3.1 x 0.95mm 3.1mm 3.1mm 0.95mm -
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. 903-4318
FabrikantnummerLM393MX
FabrikantON Semiconductor
0,294 €
Each (In a Pack of 50)
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. 463-666
FabrikantnummerLM339NG
FabrikantON Semiconductor
0,52 €
Each (In a Pack of 20)
Aantal stuks
General Purpose Through Hole PDIP Dual, Single Open Collector 4 1.3µs 14 5 → 28 V 19.56 x 6.6 x 3.68mm 19.56mm 6.6mm 3.68mm -
RS-stocknr. 802-1686
FabrikantnummerNCS2200SQ2T2G
FabrikantON Semiconductor
0,613 €
Each (In a Pack of 20)
Aantal stuks
Low Voltage Surface Mount SC-70 Single Complementary 1 16ns 5 6 V 2.2 x 1.35 x 1mm 2.2mm 1.35mm 1mm 65dB
RS-stocknr. 166-1610
FabrikantnummerLM2903MX
FabrikantON Semiconductor
0,108 €
Each (On a Reel of 3000)
Aantal stuks
General Purpose Surface Mount SOP Dual, Single Open Collector 2 0.35 μs, 1.4 μs 8 2 → 36 V 5.13 x 3.95 x 1.55mm 5.13mm 3.95mm 1.55mm -
RS-stocknr. 172-3373
FabrikantnummerTL331VSN4T3G
FabrikantON Semiconductor
0,431 €
Each (In a Pack of 25)
Aantal stuks
Low Power Surface Mount TSOP Dual, Single CMOS, DTL, ECL, TTL 1 - 5 2 → 36 V 3.15 x 1.65 x 1mm 3.15mm 1.65mm 1mm -
RS-stocknr. 787-8601
FabrikantnummerLM2901VDR2G
FabrikantON Semiconductor
0,343 €
Each (On a Tape of 20)
Aantal stuks
General Purpose Surface Mount SOIC Dual, Single CMOS, TTL 4 1.3µs 14 3 → 36 V 8.75 x 4 x 1.5mm 8.75mm 4mm 1.5mm -
RS-stocknr. 463-537
FabrikantnummerNE521DG
FabrikantON Semiconductor
3,99 €
Each
Aantal stuks
General Purpose Surface Mount SOIC Dual - 2 - 14 - 8.75 x 4 x 1.5mm 8.75mm 4mm 1.5mm -
Nieuw
RS-stocknr. 185-9057
FabrikantnummerNCV2250SN2T1G
FabrikantON Semiconductor
0,638 €
Each (In a Pack of 13)
Aantal stuks
High Speed Surface Mount TSOP Single Rail to Rail 1 - 5 1.8 → 5.5 V 3.15 x 1.65 x 1mm 3.15mm 1.65mm 1mm 81dB
RS-stocknr. 689-9718
FabrikantnummerLM339DR2G
FabrikantON Semiconductor
0,34 €
Each (In a Pack of 5)
Aantal stuks
General Purpose Surface Mount SOIC Dual, Single Open Collector 4 1.3µs 14 5 → 28 V 8.75 x 4 x 1.5mm 8.75mm 4mm 1.5mm -
RS-stocknr. 806-2804
FabrikantnummerLM319M
FabrikantON Semiconductor
0,402 €
Each (In a Tube of 54)
Aantal stuks
General Purpose Surface Mount SOP Single Open Collector 2 80ns 14 5 V 8.76 x 4.2 x 1.65mm 8.76mm 4.2mm 1.65mm -
RS-stocknr. 145-3273
FabrikantnummerLM393DG
FabrikantON Semiconductor
0,235 €
Each (In a Tube of 98)
Aantal stuks
General Purpose Surface Mount SOIC Dual, Single Open Collector 2 1.3µs 8 3 → 28 V 5 x 4 x 1.5mm 5mm 4mm 1.5mm -