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. 533-8237
FabrikantnummerLM339N/NOPB
€ 1,02
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. 527-198
FabrikantnummerLM339N
€ 0,296
Each (In a Pack of 25)
Aantal stuks
General Purpose 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. 121-8421
FabrikantnummerLM339N
€ 0,296
Each (In a Tube of 25)
Aantal stuks
General Purpose 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. 121-8704
FabrikantnummerLM339N/NOPB
€ 0,863
Each (In a Tube of 25)
Aantal stuks
General Purpose Through Hole MDIP Dual, Single Open Collector 4 1.3µs 14 3 to 28 V 19.05 x 6.35 x 3.3mm 19.05mm 6.35mm 3.3mm -
RS-stocknr. 124-4530
FabrikantnummerLM393N/NOPB
€ 0,652
Each (In a Pack of 10)
Aantal stuks
Dual Voltage Comparator Through Hole PDIP Dual, Single Single Ended 1 1.3µs 8 2 → 36 V 10.16 x 6.6 x 4.57mm 10.16mm 6.6mm 4.57mm -
RS-stocknr. 121-8772
FabrikantnummerLM393N/NOPB
€ 0,651
Each (In a Tube of 40)
Aantal stuks
General Purpose Through Hole MDIP Dual, Single Open Collector 2 1.3µs 8 3 to 28 V 9.27 x 6.35 x 3.3mm 9.27mm 6.35mm 3.3mm -
RS-stocknr. 912-7031
FabrikantnummerAD790JRZ
FabrikantAnalog Devices
€ 7,314
Each (In a Tube of 98)
Aantal stuks
General Purpose Surface Mount SOIC Dual, Single TTL 1 - 8 5 V 5 x 4 x 1.5mm 5mm 4mm 1.5mm 95dB
RS-stocknr. 195-082
FabrikantnummerAD790JRZ
FabrikantAnalog Devices
€ 8,79
Each
Aantal stuks
General Purpose Surface Mount SOIC Dual, Single TTL 1 - 8 5 V 5 x 4 x 1.5mm 5mm 4mm 1.5mm 95dB
RS-stocknr. 522-9408
FabrikantnummerAD790JNZ
FabrikantAnalog Devices
€ 10,20
Each
Aantal stuks
General Purpose Through Hole PDIP Dual, Single TTL 1 - 8 5 V 9.27 x 7.24 x 3.43mm 9.27mm 7.24mm 3.43mm 95dB
RS-stocknr. 523-9809
FabrikantnummerAD790JNZ
FabrikantAnalog Devices
€ 8,99
Each (In a Tube of 48)
Aantal stuks
General Purpose Through Hole PDIP Dual, Single - 1 - 8 5 V 9.27 x 7.24 x 3.43mm 9.27mm 7.24mm 3.43mm 95dB
RS-stocknr. 145-0107
FabrikantnummerLM239N
€ 0,301
Each (In a Tube of 25)
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. 517-1832
FabrikantnummerLM239N
€ 0,302
Each (In a Pack of 20)
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. 428-458
FabrikantnummerLM311P
€ 0,46
Each
Aantal stuks
General Purpose Through Hole PDIP Dual, Single Open Collector/Emitter 1 0.165µs 8 5 → 28 V 9.81 x 6.35 x 4.57mm 9.81mm 6.35mm 4.57mm -
RS-stocknr. 121-8305
FabrikantnummerLM311P
€ 0,334
Each (In a Tube of 50)
Aantal stuks
General Purpose Through Hole PDIP Dual, Single Open Collector/Emitter 1 0.165µs 8 5 → 28 V 9.81 x 6.35 x 4.57mm 9.81mm 6.35mm 4.57mm -
RS-stocknr. 121-9135
FabrikantnummerTL331IDBVR
€ 0,203
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. 922-3296
FabrikantnummerLM139AD
€ 1,109
Each (In a Tube of 50)
Aantal stuks
General Purpose Surface Mount SOIC Dual, Single Open Collector 4 1.3µs 14 3 → 28 V 8.65 x 3.91 x 1.58mm 8.65mm 3.91mm 1.58mm -
RS-stocknr. 661-2766
FabrikantnummerLM139AD
€ 1,14
Each (In a Pack of 5)
Aantal stuks
Differential Surface Mount SOIC Dual, Single Open Collector 4 1.3µs 14 3 → 28 V 8.65 x 3.91 x 1.58mm 8.65mm 3.91mm 1.58mm -
RS-stocknr. 661-2668
FabrikantnummerTL331IDBVR
€ 0,403
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. 738-7045
FabrikantnummerMCP6569-E/ST
FabrikantMicrochip
€ 0,79
Each (In a Pack of 2)
Aantal stuks
General Purpose Surface Mount TSSOP Single Open Drain 4 - 14 1.8 to 5.5 V 5.1 x 4.5 x 1.05mm 5.1mm 4.50mm 1.05mm 65dB
RS-stocknr. 165-4794
FabrikantnummerMCP6562-E/SN
FabrikantMicrochip
€ 0,456
Each (In a Tube of 100)
Aantal stuks
General Purpose Surface Mount SOIC Single Push-Pull 2 - 8 3 V, 5 V 4.9 x 3.9 x 1.25mm 4.9mm 3.9mm 1.25mm 66dB
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