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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Beskrivning Pris 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-artikelnummer 732-7181
Tillv. art.nrMAX913CSA+
VarumärkeMaxim Integrated
51,70 kr
Each
Enheter
Low Power Surface Mount SOIC Dual, Single Complementary 1 - 8 5 → 10 V 5 x 4 x 1.5mm 5mm 4mm 1.5mm 110dB
RS-artikelnummer 919-9364
Tillv. art.nrLT6703HVIS5-3#TRMPBF
VarumärkeAnalog Devices
13,85 kr
Each (On a Reel of 500)
Enheter
Low Voltage 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-artikelnummer 761-8908
Tillv. art.nrLT6703HVIS5-3#TRMPBF
VarumärkeAnalog Devices
21,92 kr
Each
Enheter
Low Voltage 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-artikelnummer 144-5907
Tillv. art.nrMIC841LYMT-T5
VarumärkeMicrochip
3,36 kr
Each (On a Reel of 500)
Enheter
Micro Power Comparator Surface Mount TDFN Single Push-Pull 1 - 6 1.5 → 5.5 V 1.6 x 1.6 x 0.5mm 1.6mm 1.6mm 0.5mm -
RS-artikelnummer 162-6240
Tillv. art.nrLM361M/NOPB
VarumärkeTexas Instruments
21,953 kr
Each (In a Tube of 55)
Enheter
High Speed Surface Mount SOIC Dual TTL 2 0.02µs 14 - 8.738 x 3.988 x 1.499mm 8.74mm 3.99mm 1.5mm -
RS-artikelnummer 165-3326
Tillv. art.nrMCP6541UT-I/LT
VarumärkeMicrochip
2,507 kr
Each (On a Reel of 3000)
Enheter
General Purpose Surface Mount SC-70 Single Push-Pull 1 - 5 1.6 → 5.5 V 2.25 x 1.35 x 1mm 2.25mm 1.35mm 1mm 70dB
RS-artikelnummer 761-5864
Tillv. art.nrLM361M/NOPB
VarumärkeTexas Instruments
26,14 kr
Each (In a Pack of 5)
Enheter
High Speed Surface Mount SOIC Dual TTL 2 0.02µs 14 - 8.738 x 3.988 x 1.499mm 8.74mm 3.99mm 1.5mm -
RS-artikelnummer 911-3253
Tillv. art.nrMIC841LYMT-T5
VarumärkeMicrochip
3,454 kr
Each (In a Pack of 10)
Enheter
Micro Power Comparator Surface Mount TDFN Single Push-Pull 1 - 6 1.5 → 5.5 V 1.6 x 1.6 x 0.5mm 1.6mm 1.6mm 0.5mm -
RS-artikelnummer 768-1362
Tillv. art.nrMCP6541UT-I/LT
VarumärkeMicrochip
3,35 kr
Each (In a Pack of 10)
Enheter
General Purpose Surface Mount SC-70 Single Push-Pull 1 - 5 1.6 → 5.5 V 2.25 x 1.35 x 1mm 2.25mm 1.35mm 1mm 70dB
RS-artikelnummer 866-0231
Tillv. art.nrLM393P
VarumärkeTexas Instruments
3,064 kr
Each (In a Tube of 50)
Enheter
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-artikelnummer 661-2615
Tillv. art.nrLMV331IDBVR
VarumärkeTexas Instruments
5,015 kr
Each (In a Pack of 10)
Enheter
General Purpose Surface Mount SOT-23 Single Open Collector 1 - 5 3 V, 5 V 2.9 x 1.6 x 1.15mm 2.9mm 1.6mm 1.15mm -
RS-artikelnummer 162-5392
Tillv. art.nrLMV331IDBVR
VarumärkeTexas Instruments
2,481 kr
Each (On a Reel of 3000)
Enheter
General Purpose Surface Mount SOT-23 Single Open Collector 1 - 5 3 V, 5 V 2.9 x 1.6 x 1.15mm 2.9mm 1.6mm 1.15mm -
RS-artikelnummer 810-239
Tillv. art.nrLM393P
VarumärkeTexas Instruments
3,93 kr
Each
Enheter
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-artikelnummer 145-9606
Tillv. art.nrLM293DT
VarumärkeSTMicroelectronics
0,913 kr
Each (On a Reel of 2500)
Enheter
Low Power 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-artikelnummer 145-0192
Tillv. art.nrLM293P
VarumärkeTexas Instruments
3,009 kr
Each (In a Tube of 50)
Enheter
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-artikelnummer 714-0764
Tillv. art.nrLM293D
VarumärkeSTMicroelectronics
1,308 kr
Each (In a Pack of 20)
Enheter
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 1.58mm 4.9mm 3.9mm 1.58mm -
RS-artikelnummer 709-2028
Tillv. art.nrLM293P
VarumärkeTexas Instruments
3,309 kr
Each (In a Pack of 20)
Enheter
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-artikelnummer 528-343
Tillv. art.nrLM393DR
VarumärkeTexas Instruments
2,345 kr
Each (In a Pack of 25)
Enheter
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-artikelnummer 165-4625
Tillv. art.nrMCP6541T-I/OT
VarumärkeMicrochip
2,507 kr
Each (On a Reel of 3000)
Enheter
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-artikelnummer 761-9014
Tillv. art.nrLTC1440IS8#PBF
VarumärkeAnalog Devices
37,53 kr
Each
Enheter
Low Power Surface Mount SOIC Dual, Single CMOS, TTL 1 - 8 2 to 11 V 5.004 x 3.988 x 1.498mm 5mm 3.988mm 1.498mm 0.1mV/V
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