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. 858-433
FabrikantnummerLM393D
€ 0,34
Each
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. 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. 709-5339
FabrikantnummerCMP04FSZ
FabrikantAnalog Devices
€ 13,45
Each
Aantal stuks
General Purpose Surface Mount SOIC Dual, Single Open Collector 4 1.3µs 14 5 → 28 V 8.75 x 4 x 1.5mm 8.75mm 4mm 1.5mm 100dB
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. 877-2756
FabrikantnummerLM311DT
€ 0,282
Each (In a Pack of 25)
Aantal stuks
General Purpose Surface Mount SOIC Dual, Single DTL, RTL, TTL 1 200ns 8 5 V 5 x 4 x 1.65mm 5mm 4mm 1.65mm -
RS-stocknr. 809-6346
FabrikantnummerLM393ADGKR
€ 0,214
Each (On a Tape of 20)
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. 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. 761-8370
FabrikantnummerLT1716IS5#TRMPBF
FabrikantAnalog Devices
€ 2,73
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. 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. 145-8957
FabrikantnummerMCP6541-E/SN
FabrikantMicrochip
€ 0,288
Each (In a Tube of 100)
Aantal stuks
Low Power Surface Mount SOIC Single Push-Pull 1 - 8 3 V, 5 V 4.9 x 3.9 x 1.25mm 4.9mm 3.9mm 1.25mm 70dB
RS-stocknr. 536-1085
FabrikantnummerLM2903M/NOPB
€ 0,665
Each (In a Pack of 20)
Aantal stuks
Differential Surface Mount SOIC Dual, Single Open Collector 2 1.5µs 8 3 → 28 V 4.9 x 3.9 x 1.45mm 4.9mm 3.9mm 1.45mm -
RS-stocknr. 787-8633
FabrikantnummerLM293DMR2G
FabrikantON Semiconductor
€ 0,289
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. 751-2991
FabrikantnummerAP331AWRG-7
FabrikantDiodesZetex
€ 0,245
Each (In a Pack of 50)
Aantal stuks
General Purpose Surface Mount SOT-25R Dual, Single Open Collector 1 1.3µs 5 2 → 36 V 3.1 x 1.7 x 1.3mm 3.1mm 1.7mm 1.3mm -
RS-stocknr. 145-7305
FabrikantnummerLM2901D
€ 0,285
Each (In a Tube of 50)
Aantal stuks
Differential 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. 787-8686
FabrikantnummerLMV331SQ3T2G
FabrikantON Semiconductor
€ 0,253
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. 155-9289
FabrikantnummerLT6703CDC-2#TRMPBF
FabrikantAnalog Devices
€ 1,113
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. 812-0449
FabrikantnummerTPS3700DDCT
€ 1,445
Each (In a Pack of 10)
Aantal stuks
Window Surface Mount TSOT-23 Single Open Drain 2 2.2µs 6 1.8 → 18 V 3.05 x 1.75 x 1mm 3.05mm 1.75mm 1mm -
RS-stocknr. 162-5392
FabrikantnummerLMV331IDBVR
€ 0,232
Each (On a Reel of 3000)
Aantal stuks
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-stocknr. 121-9350
FabrikantnummerTPS3700DDCT
€ 1,017
Each (On a Reel of 250)
Aantal stuks
- Surface Mount TSOT-23 - - - - 6 - 3.05 x 1.75 x 1mm 3.05mm 1.75mm 1mm -
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 -
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