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. 802-4290
FabrikantnummerNCS2200SN1T1G
FabrikantON Semiconductor
€ 0,552
Each (In a Pack of 20)
Aantal stuks
Low Power Surface Mount SOT-23 Single Rail to Rail 1 - 5 0.85 → 6 V 3 x 1.5 x 1mm 3mm 1.5mm 1mm 65dB
RS-stocknr. 121-6493
FabrikantnummerNCS2200SN1T1G
FabrikantON Semiconductor
€ 0,24
Each (On a Reel of 3000)
Aantal stuks
Low Power Surface Mount SOT-23 Single Rail to Rail 1 - 5 0.85 → 6 V 3 x 1.5 x 1mm 3mm 1.5mm 1mm 65dB
RS-stocknr. 163-2404
FabrikantnummerLM2903DG
FabrikantON Semiconductor
€ 0,254
Each (In a Tube of 98)
Aantal stuks
General Purpose Surface Mount SOIC Dual, Single Open Collector 2 1.5µs 8 3 → 28 V 5 x 4 x 1.5mm 5mm 4mm 1.5mm -
RS-stocknr. 463-656
FabrikantnummerLM2903DG
FabrikantON Semiconductor
€ 0,254
Each (In a Pack of 25)
Aantal stuks
General Purpose Surface Mount SOIC Dual, Single Open Collector 2 1.5µs 8 3 → 28 V 5 x 4 x 1.5mm 5mm 4mm 1.5mm -
RS-stocknr. 145-4758
FabrikantnummerLMV331SQ3T2G
FabrikantON Semiconductor
€ 0,072
Each (On a Reel of 3000)
Aantal stuks
General Purpose Surface Mount SC-70 Single Open Drain 1 - 5 2.7 → 5 V 2.2 x 1.35 x 1mm 2.2mm 1.35mm 1mm -
RS-stocknr. 787-8601
FabrikantnummerLM2901VDR2G
FabrikantON Semiconductor
€ 0,329
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. 787-8633
FabrikantnummerLM293DMR2G
FabrikantON Semiconductor
€ 0,296
Each (In a Pack of 20)
Aantal stuks
General Purpose Surface Mount MSOP Dual, Single CMOS, DTL, ECL, MOS, TTL 2 1.5µs 8 2 → 36 V dc 3.1 x 3.1 x 0.95mm 3.1mm 3.1mm 0.95mm -
RS-stocknr. 122-0108
FabrikantnummerLM2903DR2G
FabrikantON Semiconductor
€ 0,063
Each (On a Reel of 2500)
Aantal stuks
General Purpose Surface Mount SOIC Dual, Single Open Collector 2 1.5µs 8 3 to 28 V 5 x 4 x 1.5mm 5mm 4mm 1.5mm -
RS-stocknr. 787-8686
FabrikantnummerLMV331SQ3T2G
FabrikantON Semiconductor
€ 0,072
Each (On a Tape of 20)
Aantal stuks
General Purpose Surface Mount SC-70 Single Open Drain 1 - 5 2.7 → 5 V 2.2 x 1.35 x 1mm 2.2mm 1.35mm 1mm -
RS-stocknr. 169-8573
FabrikantnummerLM319MX
FabrikantON Semiconductor
€ 0,155
Each (On a Reel of 3000)
Aantal stuks
High Speed Surface Mount SOP Dual, Single Open Collector 2 0.08µs 14 5 V 8.76 x 4.2 x 1.65mm 8.76mm 4.2mm 1.65mm -
RS-stocknr. 689-9711
FabrikantnummerLM2903DR2G
FabrikantON Semiconductor
€ 0,382
Each (In a Pack of 5)
Aantal stuks
General Purpose Surface Mount SOIC Dual, Single Open Collector 2 1.5µs 8 3 → 28 V 5 x 4 x 1.5mm 5mm 4mm 1.5mm -
RS-stocknr. 145-3854
FabrikantnummerLM2901VDR2G
FabrikantON Semiconductor
€ 0,133
Each (On a Reel of 2500)
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. 163-0737
FabrikantnummerNCV2200SN2T1G
FabrikantON Semiconductor
€ 0,321
Each (On a Reel of 3000)
Aantal stuks
Low Power Surface Mount SOT-23 Single Complementary 1 16ns 5 0.85 → 6 V 3 x 1.5 x 1mm 3mm 1.5mm 1mm 65dB
RS-stocknr. 162-9349
FabrikantnummerLM293DMR2G
FabrikantON Semiconductor
€ 0,103
Each (On a Reel of 4000)
Aantal stuks
General Purpose Surface Mount MSOP Dual, Single CMOS, DTL, ECL, MOS, TTL 2 1.5µs 8 2 → 36 V dc 3.1 x 3.1 x 0.95mm 3.1mm 3.1mm 0.95mm -
RS-stocknr. 760-5788
FabrikantnummerFAN156L6X
FabrikantON Semiconductor
€ 0,281
Each (In a Pack of 25)
Aantal stuks
Low Power Surface Mount MicroPak Single Push-Pull 1 0.0054µs 6 5.5 V 1.45 x 1 x 0.5mm 1.45mm 1mm 0.5mm 60dB
RS-stocknr. 805-7231
FabrikantnummerNCV2200SN2T1G
FabrikantON Semiconductor
€ 0,677
Each (In a Pack of 10)
Aantal stuks
Low Power Surface Mount SOT-23 Single Complementary 1 16ns 5 0.85 → 6 V 3 x 1.5 x 1mm 3mm 1.5mm 1mm 65dB
RS-stocknr. 166-1626
FabrikantnummerFAN156L6X
FabrikantON Semiconductor
€ 0,111
Each (On a Reel of 5000)
Aantal stuks
Low Power Surface Mount MicroPak Single Push-Pull 1 0.0054µs 6 5.5 V 1.45 x 1 x 0.5mm 1.45mm 1mm 0.5mm 60dB
RS-stocknr. 759-9386
FabrikantnummerLM319MX
FabrikantON Semiconductor
€ 0,383
Each (In a Pack of 10)
Aantal stuks
High Speed Surface Mount SOP Dual, Single Open Collector 2 0.08µs 14 5 V 8.76 x 4.2 x 1.65mm 8.76mm 4.2mm 1.65mm -
RS-stocknr. 162-9566
FabrikantnummerNCS2200SN2T1G
FabrikantON Semiconductor
€ 0,255
Each (On a Reel of 3000)
Aantal stuks
Low Power Surface Mount SOT-23 Single Complementary 1 35µs 5 0.85 → 6 V 3 x 1.5 x 1mm 3mm 1.5mm 1mm 65dB
RS-stocknr. 787-8807
FabrikantnummerNCS2200SN2T1G
FabrikantON Semiconductor
€ 0,586
Each (On a Tape of 10)
Aantal stuks
Low Power Surface Mount SOT-23 Single Complementary 1 35µs 5 0.85 → 6 V 3 x 1.5 x 1mm 3mm 1.5mm 1mm 65dB