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. 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. 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. 880-5496
FabrikantnummerTS3704CDT
0,52 €
Each (In a Pack of 25)
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
RS-stocknr. 714-0830
FabrikantnummerLM393D
0,265 €
Each (In a Pack of 20)
Aantal stuks
General Purpose Surface Mount SOIC Dual, Single Open Collector 2 1.3µs 8 3 → 28 V 4.9 x 3.9 x 1.25mm 4.9mm 3.9mm 1.25mm -
RS-stocknr. 527-536
FabrikantnummerLM139D
1,178 €
Each (In a Pack of 25)
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. 661-2589
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. 145-7228
FabrikantnummerTLC339IPW
1,205 €
Each (In a Tube of 90)
Aantal stuks
Low Power Surface Mount TSSOP Single Open Drain 1 2.5µs 14 3 → 16 V 5.1 x 4.5 x 1.05mm 5.1mm 4.5mm 1.05mm 84dB
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. 810-267
FabrikantnummerLM2903P
2,21 €
Each
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. 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. 145-6489
FabrikantnummerLM393APSR
0,097 €
Each (On a Reel of 2000)
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. 121-8466
FabrikantnummerLM2903P
0,302 €
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. 121-9350
FabrikantnummerTPS3700DDCT
1,24 €
Each (On a Reel of 250)
Aantal stuks
- Surface Mount TSOT-23 - - - - 6 - 3.05 x 1.75 x 1mm 3.05mm 1.75mm 1mm -
RS-stocknr. 178-5167
FabrikantnummerLM393DT
0,086 €
Each (On a Reel of 2500)
Aantal stuks
General Purpose Surface Mount SOIC Dual, Single Open Collector 2 1.3µs 8 3 V, 5 V, 9 V, 12 V, 15 V, 18 V, 24 V, 28 V 4.9 x 3.9 x 1.25mm 4.9mm 3.9mm 1.25mm -
RS-stocknr. 860-7404
FabrikantnummerTS881ILT
0,523 €
Each (In a Pack of 10)
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. 121-8870
FabrikantnummerLM339M/NOPB
0,741 €
Each (In a Tube of 55)
Aantal stuks
General Purpose Surface Mount SOIC Dual, Single Open Collector 4 1.3µs 14 3 to 28 V 8.64 x 3.91 x 1.45mm 8.64mm 3.91mm 1.45mm -
RS-stocknr. 714-0833
FabrikantnummerLM393DT
0,291 €
Each (In a Pack of 20)
Aantal stuks
General Purpose Surface Mount SOIC Dual, Single Open Collector 2 1.3µs 8 3 V, 5 V, 9 V, 12 V, 15 V, 18 V, 24 V, 28 V 4.9 x 3.9 x 1.25mm 4.9mm 3.9mm 1.25mm -
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. 759-2727
FabrikantnummerADCMP601BKSZ-R2
FabrikantAnalog Devices
4,85 €
Each
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. 162-5066
FabrikantnummerLM2903QDRQ1
0,199 €
Each (On a Reel of 2500)
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 -
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