Comparators

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 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

  • 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. 669-6212
FabrikantnummerMCP6541T-E/OT
FabrikantMicrochip
€ 0,305
Each (In a Pack of 10)
Aantal stuks
Low Power Surface Mount SOT-23 Single Push-Pull 1 - 5 3 V, 5 V 3.1 x 1.8 x 1.3mm 3.1mm 1.8mm 1.3mm 70dB
RS-stocknr. 121-8934
FabrikantnummerTLV3501AID
€ 2,378
Each (In a Tube of 75)
Aantal stuks
High Speed Surface Mount SOIC Single Push-Pull 1 - 8 3 V, 5 V 4.9 x 3.91 x 1.58mm 4.9mm 3.91mm 1.58mm 70dB
RS-stocknr. 697-7543
FabrikantnummerADCMP600BRJZ-R2
FabrikantAnalog Devices
€ 4,62
Each
Aantal stuks
General Purpose Surface Mount SOT-23 Single - 1 - 5 3 V, 5 V 2.9 x 1.6 x 1.15mm 2.9mm 1.6mm 1.15mm 50dB
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. 810-239
FabrikantnummerLM393P
€ 0,38
Each
Aantal stuks
General Purpose 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. 162-5384
FabrikantnummerLM339ADR
€ 0,077
Each (On a Reel of 2500)
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. 165-4624
FabrikantnummerMCP6541T-E/OT
FabrikantMicrochip
€ 0,229
Each (On a Reel of 3000)
Aantal stuks
Low Power Surface Mount SOT-23 Single Push-Pull 1 - 5 3 V, 5 V 3.1 x 1.8 x 1.3mm 3.1mm 1.8mm 1.3mm 70dB
RS-stocknr. 912-6328
FabrikantnummerADCMP600BRJZ-R2
FabrikantAnalog Devices
€ 2,898
Each (On a Reel of 250)
Aantal stuks
General Purpose Surface Mount SOT-23 Single - 1 - 5 3 V, 5 V 2.9 x 1.6 x 1.15mm 2.9mm 1.6mm 1.15mm 50dB
RS-stocknr. 866-0231
FabrikantnummerLM393P
€ 0,309
Each (In a Tube of 50)
Aantal stuks
General Purpose Through Hole PDIP Dual, Single CMOS, MOS, Open Collector, TTL 2 1.3µs 8 2 → 36 V 10.16 x 6.6 x 4.57mm 10.16mm 6.6mm 4.57mm -
RS-stocknr. 545-8173
FabrikantnummerTLV3501AID
€ 2,798
Each (In a Pack of 5)
Aantal stuks
High Speed Surface Mount SOIC Single Push-Pull 1 - 8 3 V, 5 V 4.9 x 3.91 x 1.58mm 4.9mm 3.91mm 1.58mm 70dB
RS-stocknr. 809-9253
FabrikantnummerAD8468WBKSZ-R7
FabrikantAnalog Devices
€ 1,924
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
RS-stocknr. 812-4038
FabrikantnummerTLV3201AIDBVT
€ 1,111
Each (In a Pack of 10)
Aantal stuks
Low Power Surface Mount SOT-23 Single Push-Pull 1 2.9ns 5 2.7 → 5.5 V 3.05 x 1.75 x 1.3mm 3.05mm 1.75mm 1.3mm 70dB
RS-stocknr. 536-0414
FabrikantnummerLMV761MF/NOPB
€ 1,522
Each (In a Pack of 5)
Aantal stuks
Low Power Surface Mount SOT-23 Single Push-Pull 1 - 6 3 V 2.92 x 1.6 x 1.02mm 2.92mm 1.6mm 1.02mm 100dB
RS-stocknr. 162-6568
FabrikantnummerLM393ADGKR
€ 0,078
Each (On a Reel of 2500)
Aantal stuks
General Purpose Surface Mount VSSOP Dual, Single Open Collector 2 1.3µs 8 2 → 36 V 3.1 x 3.1 x 0.95mm 3.1mm 3.1mm 0.95mm -
RS-stocknr. 714-0770
FabrikantnummerLM311D
€ 0,249
Each (In a Pack of 20)
Aantal stuks
General Purpose Surface Mount SOIC Dual, Single Open Collector 1 0.2µs 8 9 → 28 V 5 x 4 x 1.25mm 5mm 4mm 1.25mm -
RS-stocknr. 858-411
FabrikantnummerLM339D
€ 0,36
Each
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. 160-3349
FabrikantnummerAD8468WBKSZ-R7
FabrikantAnalog Devices
€ 1,018
Each (On a Reel of 3000)
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
RS-stocknr. 121-8827
FabrikantnummerLMV331M5/NOPB
€ 0,311
Each (On a Reel of 1000)
Aantal stuks
General Purpose Surface Mount SOT-23 Single Open Collector 1 - 5 3 V 2.92 x 1.6 x 1.02mm 2.92mm 1.6mm 1.02mm -
RS-stocknr. 100-0752
FabrikantnummerLM393D
€ 0,261
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. 528-343
FabrikantnummerLM393DR
€ 0,214
Each (In a Pack of 25)
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 -
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