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. 169-5573
FabrikantnummerLM239PWR
€ 0,097
Each (On a Reel of 2000)
Aantal stuks
Differential Surface Mount TSSOP Dual, Single Open Collector 4 1.3µs 14 3 → 28 V 5 x 4.4 x 1.15mm 5mm 4.4mm 1.15mm -
RS-stocknr. 787-8608
FabrikantnummerLM239DTBR2G
FabrikantON Semiconductor
€ 0,099
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. 506-0388
FabrikantnummerLT1719CS8#PBF
FabrikantAnalog Devices
€ 4,14
Each
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. 169-8573
FabrikantnummerLM319MX
FabrikantON Semiconductor
€ 0,166
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. 787-8601
FabrikantnummerLM2901VDR2G
FabrikantON Semiconductor
€ 0,309
Each (On a Tape of 20)
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. 761-7936
FabrikantnummerLT1011IS8#PBF
FabrikantAnalog Devices
€ 3,94
Each
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. 121-8466
FabrikantnummerLM2903P
€ 0,30
Each (In a Tube of 50)
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. 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. 162-9349
FabrikantnummerLM293DMR2G
FabrikantON Semiconductor
€ 0,113
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. 122-0108
FabrikantnummerLM2903DR2G
FabrikantON Semiconductor
€ 0,068
Each (On a Reel of 2500)
Aantal stuks
General Purpose Surface Mount SOIC Dual, Single Open Collector 2 1.5µs 8 3 to 28 V 5 x 4 x 1.5mm 5mm 4mm 1.5mm -
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. 517-1898
FabrikantnummerLM339PW
€ 0,303
Each (In a Pack of 20)
Aantal stuks
General Purpose Surface Mount TSSOP Dual, Single Open Collector 4 1.3µs 14 3 → 28 V 5 x 4.4 x 1.15mm 5mm 4.4mm 1.15mm -
RS-stocknr. 528-365
FabrikantnummerLM2901DR
€ 0,259
Each (In a Pack of 25)
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. 689-9711
FabrikantnummerLM2903DR2G
FabrikantON Semiconductor
€ 0,412
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. 687-8395
FabrikantnummerMCP6561T-E/OT
FabrikantMicrochip
€ 0,46
Each
Aantal stuks
General Purpose 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 66dB
RS-stocknr. 805-7231
FabrikantnummerNCV2200SN2T1G
FabrikantON Semiconductor
€ 0,69
Each (In a Pack of 10)
Aantal stuks
Low Voltage Surface Mount SOT-23 Single Complementary 1 16ns 5 0.85 → 6 V 3 x 1.5 x 1mm 3mm 1.5mm 1mm 65dB
RS-stocknr. 545-4799
FabrikantnummerLT1016CN8#PBF
FabrikantAnalog Devices
€ 6,17
Each
Aantal stuks
General Purpose Through Hole PDIP Dual, Single Complementary 1 - 8 5 V 10.16 x 6.48 x 3.3mm 10.16mm 6.48mm 3.3mm 96dB
RS-stocknr. 661-2674
FabrikantnummerTLC3702CDR
€ 0,902
Each (In a Pack of 5)
Aantal stuks
Low Power Surface Mount SOIC Single Push-Pull 2 - 8 5 V 4.9 x 3.91 x 1.58mm 4.9mm 3.91mm 1.58mm 84dB
RS-stocknr. 536-1388
FabrikantnummerLM393M/NOPB
€ 1,04
Each
Aantal stuks
General Purpose Surface Mount SOIC Dual, Single Open Collector 2 1.3µs 8 3 → 28 V 4.9 x 3.9 x 1.45mm 4.9mm 3.9mm 1.45mm -
RS-stocknr. 912-9863
FabrikantnummerADCMP601BKSZ-R2
FabrikantAnalog Devices
€ 3,619
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
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