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.

...
Read more Read less

Filters

Viewing 1121 - 1140 of 1270 products
Results per page
Description Price 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 Stock No. 178-2383
Mfr. Part No.NJM360M
£0.684
Each (In a Tube of 100)
Units
High Speed Surface Mount DMP Dual Complementary 1 0.014µs 8 - 5 x 5 x 1.6mm 5mm 5mm 1.6mm -
RS Stock No. 713-9408
Mfr. Part No.NJM2901V-TE1
£0.386
Each (In a Pack of 5)
Units
General Purpose Surface Mount SSOP Dual, Single Open Collector 4 1.3µs 14 3 → 28 V 5 x 4.4 x 1.15mm 5mm 4.4mm 1.15mm -
RS Stock No. 738-7026
Mfr. Part No.MCP6561RT-E/OT
BrandMicrochip
£0.428
Each (In a Pack of 5)
Units
General Purpose Surface Mount SOT-23 Single Push-Pull 1 0.02µs 5 1.8 to 5.5 V 3.1 x 1.8 x 1.3mm 3.1mm 1.8mm 1.3mm 65dB
RS Stock No. 177-3305
Mfr. Part No.MIC842LYC5-TR
£0.41
Each (In a Pack of 20)
Units
Voltage Surface Mount SC-70 Single Push-Pull 1 12µs 5 - 1.8 x 1.15 x 0.8mm 1.8mm 1.15mm 0.8mm -
New
RS Stock No. 189-9082
Mfr. Part No.MAX942CSA+
BrandMaxim
£2.436
Each (In a Pack of 5)
Units
General Purpose Surface Mount SOIC Single - 2 - 8 3 V, 5 V 5 x 4 x 1.5mm 5mm 4mm 1.5mm 81.94dB
RS Stock No. 171-6327
Mfr. Part No.LM393FVJ-E2
BrandROHM
£0.152
Each (In a Pack of 25)
Units
- Surface Mount TSSOP-BJ Dual, Single Open Collector 2 1µs 8 3 → 32 V 3 x 3 x 0.85mm 3mm 3mm 0.85mm -
New
RS Stock No. 191-5303
Mfr. Part No.MAX902ESD+
BrandMaxim
£6.528
Each (In a Tube of 50)
Units
High Speed, Low Power Surface Mount SO Dual, Single TTL 2 10ns 14 5 → 10 V 8.75 x 4 x 1.5mm 8.75mm 4mm 1.5mm 75µV/V
RS Stock No. 171-5753
Mfr. Part No.LM2903FVJ-E2
BrandROHM
£0.146
Each (On a Reel of 2500)
Units
- Surface Mount TSSOP-BJ Dual, Single Open Collector 2 1µs 8 3 → 32 V 3 x 3 x 0.85mm 3mm 3mm 0.85mm -
New
RS Stock No. 189-7345
Mfr. Part No.MAX9203ESA+
BrandMaxim
£1.19
Each (In a Tube of 100)
Units
High Speed, Low Power Surface Mount SOIC Single TTL 1 12ns 8 4.75 → 10.5 V 5 x 4 x 1.5mm 5mm 4mm 1.5mm 50µV/V
RS Stock No. 774-7554
Mfr. Part No.MCP6548-E/MS
BrandMicrochip
£0.253
Each (In a Bag of 15)
Units
General Purpose Surface Mount MSOP Single Open Drain 1 - 8 1.6 → 5.5 V 3 x 3 x 0.95mm 3mm 3mm 0.95mm 70dB
New
RS Stock No. 191-3230
Mfr. Part No.MAX992EUA+
BrandMaxim
£1.306
Each (In a Tube of 50)
Units
- Surface Mount μMAX Dual, Single Open Drain 1 - 8 2.5 → 5.5 V 3.1 x 3.1 x 0.95mm 3.1mm 3.1mm 0.95mm 80dB
RS Stock No. 171-6269
Mfr. Part No.LM2901FVJ-E2
BrandROHM
£0.363
Each (In a Pack of 10)
Units
- Surface Mount TSSOP-BJ Dual, Single Open Collector 4 1µs 14 3 → 32 V 3 x 3 x 0.85mm 3mm 3mm 0.85mm -
New
RS Stock No. 192-2373
Mfr. Part No.MAX932ESA+
BrandMaxim
£3.09
Each (In a Pack of 2)
Units
Low Power Surface Mount SOIC Dual, Single - 2 12µs 8 3 → 9 V 5 x 4 x 1.5mm 5mm 4mm 1.5mm 80dB
RS Stock No. 810-0032
Mfr. Part No.ADCMP343YRJZ-REEL7
£1.012
Each (In a Pack of 5)
Units
General Purpose Surface Mount SOT-23 Single Open Drain 2 0.07 μs, 0.5 μs 8 1.7 → 5.5 V 3 x 1.7 x 1.3mm 3mm 1.7mm 1.3mm -
RS Stock No. 171-6247
Mfr. Part No.BU5265HFV-TR
BrandROHM
£0.422
Each (In a Pack of 25)
Units
Push-Pull Output Surface Mount HVSOF Dual, Single Push-Pull 1 0.5µs 5 1.8 → 5.5 V 1.6 x 1.2 x 0.58mm 1.6mm 1.2mm 0.58mm 80dB
New
RS Stock No. 190-6586
Mfr. Part No.MAX941EUA+
BrandMaxim
£2.482
Each (In a Pack of 5)
Units
High Speed, Low Power Surface Mount μMAX Single - 1 - 8 2.7 → 5.5 V 3.1 x 3.1 x 0.95mm 3.1mm 3.1mm 0.95mm 80µV/V
RS Stock No. 921-0739
Mfr. Part No.LMV331SE-7
£0.255
Each (In a Pack of 50)
Units
General Purpose Surface Mount SOT-353 Single Open Collector 1 - 5 2.7 → 5.5 V 2.2 x 1.35 x 1mm 2.2mm 1.35mm 1mm -
New
RS Stock No. 189-1969
Mfr. Part No.LM393QT
£0.242
Each (In a Pack of 25)
Units
Low Power Surface Mount DFN Dual, Single CMOS, DTL, ECL, MOS, TTL 2 1.3µs 8 2 → 36 V 2.05 x 2.05 x 0.7mm 2.05mm 2.05mm 0.7mm -
RS Stock No. 185-9050
Mfr. Part No.NCS2250SQ2T2G
£0.483
Each (In a Pack of 13)
Units
High Speed Surface Mount SC-88A Single Rail to Rail 1 - 5 1.8 → 5.5 V 2.2 x 1.35 x 1mm 2.2mm 1.35mm 1mm 81dB
New
RS Stock No. 189-8862
Mfr. Part No.MAX912ESE+
BrandMaxim
£6.82
Each
Units
Low Power Surface Mount SOIC Dual, Single Complementary 2 - 16 5 → 10 V 10 x 4 x 1.5mm 10mm 4mm 1.5mm 110dB
Related Products
The Texas Instruments LM193, LM293, LM393 and LM2903 ...
Description:
The Texas Instruments LM193, LM293, LM393 and LM2903 are dual differential input voltage comparators designed to operate from a single power supply over a wide range of voltages. The common mode input voltage range includes ground and the devices have open collector outputs.
A range of high speed voltage comparators from ...
Description:
A range of high speed voltage comparators from Texas Instruments featuring response times of less than 200 ns. The range includes ultra-fast devices such as the TL3016 and TL3116 which have complementary (differential) outputs and typical switching times of 10 ns or less.
The Texas Instruments LM193, LM293, LM393 and LM2903 ...
Description:
The Texas Instruments LM193, LM293, LM393 and LM2903 are dual differential input voltage comparators designed to operate from a single power supply over a wide range of voltages. The common mode input voltage range includes ground and the devices have open collector outputs.
Texas Instruments’ range of voltage comparators includes not ...
Description:
Texas Instruments’ range of voltage comparators includes not only conventional single, dual and quad comparator packages but also window comparators and over- & under-voltage supervisors.Although comparators and operational amplifiers are superficially similar devices their operation in practical applications is very different. Op amps are intended for linear operation accompanied by ...