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. 806-2807
FabrikantnummerLM319N
FabrikantON Semiconductor
€ 0,402
Each (In a Tube of 25)
Aantal stuks
General Purpose Through Hole PDIP Single Open Collector 2 80ns 14 5 V 19.8 x 6.4 x 3.25mm 19.8mm 6.4mm 3.25mm -
RS-stocknr. 121-6493
FabrikantnummerNCS2200SN1T1G
FabrikantON Semiconductor
€ 0,268
Each (On a Reel of 3000)
Aantal stuks
Low Voltage 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. 802-4290
FabrikantnummerNCS2200SN1T1G
FabrikantON Semiconductor
€ 0,634
Each (In a Pack of 20)
Aantal stuks
Low Voltage 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. 806-2829
FabrikantnummerLM339M
FabrikantON Semiconductor
€ 0,323
Each (In a Tube of 54)
Aantal stuks
General Purpose Surface Mount SOP Dual, Single Open Collector 4 1.3µs 14 2 → 36 V 8.76 x 4.2 x 1.65mm 8.76mm 4.2mm 1.65mm -
RS-stocknr. 463-656
FabrikantnummerLM2903DG
FabrikantON Semiconductor
€ 0,274
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. 163-2404
FabrikantnummerLM2903DG
FabrikantON Semiconductor
€ 0,265
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. 787-8608
FabrikantnummerLM239DTBR2G
FabrikantON Semiconductor
€ 0,29
Each (On a Tape of 20)
Aantal stuks
General Purpose Surface Mount TSSOP Dual, Single CMOS, TTL 4 1.3µs 14 3 → 36 V 5.1 x 4.5 x 1.05mm 5.1mm 4.5mm 1.05mm -
RS-stocknr. 169-8573
FabrikantnummerLM319MX
FabrikantON Semiconductor
€ 0,147
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. 162-9349
FabrikantnummerLM293DMR2G
FabrikantON Semiconductor
€ 0,118
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. 806-2826
FabrikantnummerLM339AN
FabrikantON Semiconductor
€ 0,618
Each (In a Tube of 25)
Aantal stuks
General Purpose Through Hole PDIP Dual, Single Open Collector 4 1.3µs 14 2 → 36 V 19.8 x 6.4 x 3.25mm 19.8mm 6.4mm 3.25mm -
RS-stocknr. 787-8633
FabrikantnummerLM293DMR2G
FabrikantON Semiconductor
€ 0,294
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. 178-4788
FabrikantnummerLM339DG
FabrikantON Semiconductor
€ 0,265
Each (In a Tube of 55)
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 -
RS-stocknr. 463-155
FabrikantnummerLM339DG
FabrikantON Semiconductor
€ 0,265
Each (In a Pack of 50)
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 -
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. 787-8686
FabrikantnummerLMV331SQ3T2G
FabrikantON Semiconductor
€ 0,318
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. 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. 689-9711
FabrikantnummerLM2903DR2G
FabrikantON Semiconductor
€ 0,418
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. 145-3855
FabrikantnummerLM239DTBR2G
FabrikantON Semiconductor
€ 0,139
Each (On a Reel of 2500)
Aantal stuks
General Purpose Surface Mount TSSOP Dual, Single CMOS, TTL 4 1.3µs 14 3 → 36 V 5.1 x 4.5 x 1.05mm 5.1mm 4.5mm 1.05mm -
RS-stocknr. 903-3696
FabrikantnummerLM393N
FabrikantON Semiconductor
€ 0,676
Each (In a Tube of 50)
Aantal stuks
Differential Through Hole DIP Dual, Single Open Collector 2 1.4µs 8 2 → 36 V 10.15 x 6.35 x 3.3mm 10.15mm 6.35mm 3.3mm -
RS-stocknr. 166-1626
FabrikantnummerFAN156L6X
FabrikantON Semiconductor
€ 0,12
Each (On a Reel of 5000)
Aantal stuks
Low Voltage 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