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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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. 649-481
FabrikantnummerTLC3702CP
€ 2,21
Each
Aantal stuks
Low Power Through Hole PDIP Single Push-Pull 2 - 8 5 V 9.81 x 6.35 x 4.57mm 9.81mm 6.35mm 4.57mm 84dB
RS-stocknr. 155-9289
FabrikantnummerLT6703CDC-2#TRMPBF
FabrikantAnalog Devices
€ 1,344
Each (On a Reel of 500)
Aantal stuks
Low Voltage Surface Mount DFN Single Open Collector 1 2.2µs 3 1.4 → 18 V 2 x 2 x 0.7mm 2mm 2mm 0.7mm -
RS-stocknr. 145-4758
FabrikantnummerLMV331SQ3T2G
FabrikantON Semiconductor
€ 0,135
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. 145-8811
FabrikantnummerLM2903YST
€ 0,129
Each (On a Reel of 1000)
Aantal stuks
Low Power Surface Mount MiniSO8 Dual, Single CMOS 2 1.3µs 8 2 → 36 V 4.5 x 3.1 x 1.05mm 4.5mm 3.1mm 1.05mm 79dB
RS-stocknr. 661-2583
FabrikantnummerLM2903PWR
€ 0,284
Each (In a Pack of 10)
Aantal stuks
Differential Surface Mount TSSOP Dual, Single Open Collector 2 1.3µs 8 3 → 28 V 3 x 4.4 x 1.15mm 3mm 4.4mm 1.15mm -
RS-stocknr. 121-8871
FabrikantnummerLM393M/NOPB
€ 0,776
Each (In a Tube of 95)
Aantal stuks
General Purpose Surface Mount SOIC Dual, Single Open Collector 2 1.3µs 8 3 to 28 V 4.9 x 3.9 x 1.45mm 4.9mm 3.9mm 1.45mm -
RS-stocknr. 121-9502
FabrikantnummerAP331AWRG-7
FabrikantDiodesZetex
€ 0,054
Each (On a Reel of 3000)
Aantal stuks
General Purpose Surface Mount SOT-25R Dual, Single Open Collector 1 1.3µs 5 2 to 36 V 3.1 x 1.7 x 1.3mm 3.1mm 1.7mm 1.3mm -
RS-stocknr. 661-2592
FabrikantnummerLM293ADR
€ 0,259
Each (In a Pack of 10)
Aantal stuks
Differential 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. 162-6428
FabrikantnummerTLC3702MD
€ 1,059
Each (In a Tube of 75)
Aantal stuks
Low Power Surface Mount SOIC Single Push-Pull 2 2.7µs 8 5 V 5 x 4 x 1.5mm 5mm 4mm 1.5mm 84dB
RS-stocknr. 917-3526
FabrikantnummerLT1719CS8#PBF
FabrikantAnalog Devices
€ 2,465
Each (In a Tube of 100)
Aantal stuks
Low Power Surface Mount SOIC Dual, Single - 1 - 8 3 V, 5 V 5 x 3.99 x 1.5mm 5mm 3.99mm 1.5mm 70dB
RS-stocknr. 912-9863
FabrikantnummerADCMP601BKSZ-R2
FabrikantAnalog Devices
€ 3,601
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. 823-0206
FabrikantnummerLT6703CDC-2#TRMPBF
FabrikantAnalog Devices
€ 1,428
Each (In a Pack of 5)
Aantal stuks
Low Voltage Surface Mount DFN Single Open Collector 1 2.2µs 3 1.4 → 18 V 2 x 2 x 0.7mm 2mm 2mm 0.7mm -
RS-stocknr. 144-9912
FabrikantnummerLM293AD
€ 0,299
Each (In a Tube of 75)
Aantal stuks
Differential 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. 686-7515
FabrikantnummerTS393IDT
€ 0,658
Each (In a Pack of 10)
Aantal stuks
Low Power Surface Mount SOIC Dual, Single Open Drain 2 2.5µs 8 3 → 15 V 4.9 x 3.9 x 1.25mm 4.9mm 3.9mm 1.25mm 71dB
RS-stocknr. 534-4254
FabrikantnummerLMC6762BIM/NOPB
€ 2,61
Each
Aantal stuks
General Purpose Surface Mount SOIC Single Push-Pull 2 - 8 3 → 12 V 4.9 x 3.9 x 1.45mm 4.9mm 3.9mm 1.45mm 75dB
RS-stocknr. 787-8617
FabrikantnummerLM2903NG
FabrikantON Semiconductor
€ 0,332
Each (In a Pack of 25)
Aantal stuks
General Purpose Through Hole PDIP Dual, Single CMOS, DTL, ECL, MOS, TTL 2 1.5µs 8 2 → 36 V dc 10.02 x 7.11 x 5.33mm 10.02mm 7.11mm 5.33mm -
RS-stocknr. 145-3854
FabrikantnummerLM2901VDR2G
FabrikantON Semiconductor
€ 0,137
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. 709-2028
FabrikantnummerLM293P
€ 0,32
Each (In a Pack of 20)
Aantal stuks
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-stocknr. 145-6206
FabrikantnummerLT1011IS8#PBF
FabrikantAnalog Devices
€ 2,398
Each (In a Tube of 100)
Aantal stuks
General Purpose Surface Mount SOIC Dual, Single Open Collector 1 0.15µs 8 30 V 5.004 x 3.988 x 1.498mm 5mm 3.988mm 1.498mm 115dB
RS-stocknr. 121-8458
FabrikantnummerTLC3702CP
€ 0,881
Each (In a Tube of 50)
Aantal stuks
Low Power Through Hole PDIP Single Push-Pull 2 - 8 5 V 9.81 x 6.35 x 4.57mm 9.81mm 6.35mm 4.57mm 84dB
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