Comparators

A Comparator is a circuit that accepts two voltages or currents and then switches the output showing which of the two is bigger. Comparators are found in components such as analogue to digital converters (ADCs). Comparators are like operational amplifiers except a comparator is designed specifically 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 either 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 analogue to digital (ADC). Two supply voltages 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
  • Micropower
  • Nano power
  • Precision
  • Push/pull output
  • Quad differential
  • Rail to rail
  • Voltage
  • Window

Mounting Types

Comparators can be found in both surface mount and through-hole mounting configurations to enable use in a wide variety of applications.

Comparator power supply types

Available in both single and dual power supply configurations, a comparator can easily be implemented into a robust solution.

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. 761-8908
FabrikantnummerLT6703HVIS5-3#TRMPBF
FabrikantAnalog Devices
1,98 €
Each
Aantal stuks
Low Power 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. 919-9364
FabrikantnummerLT6703HVIS5-3#TRMPBF
FabrikantAnalog Devices
1,268 €
Each (On a Reel of 500)
Aantal stuks
Low Power 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. 761-8370
FabrikantnummerLT1716IS5#TRMPBF
FabrikantAnalog Devices
2,68 €
Each
Aantal stuks
Low Power Surface Mount TSOT-23 Dual, Single Push-Pull 1 - 5 2.7 → 44 V 2.9 x 1.75 x 0.9mm 2.9mm 1.75mm 0.9mm 110dB
RS-stocknr. 160-4488
FabrikantnummerADCMP354YKSZ-REEL7
FabrikantAnalog Devices
0,346 €
Each (On a Reel of 3000)
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 -
RS-stocknr. 819-7124
FabrikantnummerADCMP354YKSZ-REEL7
FabrikantAnalog Devices
0,352 €
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 -
RS-stocknr. 709-5339
FabrikantnummerCMP04FSZ
FabrikantAnalog Devices
13,45 €
Each
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 100dB
RS-stocknr. 912-9863
FabrikantnummerADCMP601BKSZ-R2
FabrikantAnalog Devices
3,114 €
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. 759-2727
FabrikantnummerADCMP601BKSZ-R2
FabrikantAnalog Devices
5,00 €
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. 159-8140
FabrikantnummerADCMP600BKSZ-R2
FabrikantAnalog Devices
2,74 €
Each (On a Reel of 250)
Aantal stuks
High Speed Surface Mount SC-70 Single CMOS, TTL 1 0.005µs 5 2.5 → 5.5 V 2.2 x 1.35 x 1mm 2.2mm 1.35mm 1mm 50dB
RS-stocknr. 159-8141
FabrikantnummerADCMP604BKSZ-R2
FabrikantAnalog Devices
3,714 €
Each (On a Reel of 250)
Aantal stuks
High Speed Surface Mount SC-70 Single LVDS 1 0.003µs 6 2.5 → 5.5 V 2.2 x 1.35 x 1mm 2.2mm 1.35mm 1mm 50dB
RS-stocknr. 151-3100
FabrikantnummerLTC6752ISC6-1#TRMPBF
FabrikantAnalog Devices
2,241 €
Each (On a Reel of 500)
Aantal stuks
High Speed Surface Mount SC-70 Single CMOS 1 - 6 Maximum of 3.5 V 2.2 x 1.35 x 1mm 2.2mm 1.35mm 1mm 70dB
RS-stocknr. 759-0241
FabrikantnummerADCMP604BKSZ-R2
FabrikantAnalog Devices
5,71 €
Each
Aantal stuks
High Speed Surface Mount SC-70 Single LVDS 1 0.003µs 6 2.5 → 5.5 V 2.2 x 1.35 x 1mm 2.2mm 1.35mm 1mm 50dB
RS-stocknr. 759-0238
FabrikantnummerADCMP582BCPZ-WP
FabrikantAnalog Devices
17,05 €
Each
Aantal stuks
High Speed Surface Mount LFCSP VQ Dual PECL 1 0.00018µs 16 - 3 x 3 x 0.85mm 3mm 3mm 0.85mm 60dB
RS-stocknr. 877-9063
FabrikantnummerADCMP581BCPZ-WP
FabrikantAnalog Devices
10,91 €
Each
Aantal stuks
General Purpose Surface Mount LFCSP Dual ECL 1 0.037ns 16 - 3 x 3 x 0.8mm 3mm 3mm 0.8mm 60dB
RS-stocknr. 877-6354
FabrikantnummerADCMP391ARZ
FabrikantAnalog Devices
0,596 €
Each (In a Pack of 10)
Aantal stuks
General Purpose Surface Mount SOIC Single Open Drain 1 1.1µs 8 2.3 → 5.5 V 5 x 4 x 1.5mm 5mm 4mm 1.5mm 74dB
RS-stocknr. 786-9730
FabrikantnummerLT6700CS6-1#TRMPBF
FabrikantAnalog Devices
2,73 €
Each (In a Pack of 2)
Aantal stuks
General Purpose Surface Mount TSOT-23 Single Open Collector 2 24µs 6 1.4 → 18 V 2.9 x 1.75 x 0.9mm 2.9mm 1.75mm 0.9mm -
RS-stocknr. 806-8001
FabrikantnummerAD8469WBRMZ
FabrikantAnalog Devices
1,92 €
Each
Aantal stuks
High Speed Surface Mount MSOP Single CMOS, TTL 1 45 → 75ns 8 2.5 → 5.5 V 3.2 x 3.2 x 0.95mm 3.2mm 3.2mm 0.95mm 50 (Min.)dB
RS-stocknr. 779-8928
FabrikantnummerLT1011ACN8#PBF
FabrikantAnalog Devices
5,435 €
Each (In a Pack of 2)
Aantal stuks
General Purpose Through Hole PDIP Dual CMOS, Open Collector, TTL 1 150ns 8 - 10.16 x 6.477 x 3.302mm 10.16mm 6.477mm 3.302mm 115dB
RS-stocknr. 523-8711
FabrikantnummerAD8561ANZ
FabrikantAnalog Devices
5,15 €
Each
Aantal stuks
General Purpose Through Hole PDIP Dual, Single Complementary 1 - 8 5 V, 9 V 9.27 x 7.24 x 3.43mm 9.27mm 7.24mm 3.43mm 85dB
RS-stocknr. 809-9253
FabrikantnummerAD8468WBKSZ-R7
FabrikantAnalog Devices
0,96 €
Each (On a Tape of 5)
Aantal stuks
Low Power Surface Mount SC-70 Single CMOS, Rail to Rail, TTL 1 45ns 6 2.5 → 5.5 V 2.2 x 1.35 x 1mm 2.2mm 1.35mm 1mm 45dB