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. 795-8394
FabrikantnummerLM2903PT
0,291 €
Each (On a Tape of 50)
Aantal stuks
Low Power Surface Mount TSSOP Dual, Single CMOS, DTL, ECL, MOS, TTL 2 1.3µs 8 2 → 36 V 4.5 x 3.1 x 1.05mm 4.5mm 3.1mm 1.05mm -
RS-stocknr. 168-8801
FabrikantnummerTS881ILT
0,237 €
Each (On a Reel of 3000)
Aantal stuks
Low Power Surface Mount SOT-23 Single Push-Pull 1 160ns 5 0.85 → 5.5 V 2.2 x 1.35 x 1mm 2.2mm 1.35mm 1mm 78dB
RS-stocknr. 714-0830
FabrikantnummerLM393D
0,265 €
Each (In a Pack of 20)
Aantal stuks
General Purpose Surface Mount SOIC Dual, Single Open Collector 2 1.3µs 8 3 → 28 V 4.9 x 3.9 x 1.25mm 4.9mm 3.9mm 1.25mm -
RS-stocknr. 178-5167
FabrikantnummerLM393DT
0,086 €
Each (On a Reel of 2500)
Aantal stuks
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 1.25mm 4.9mm 3.9mm 1.25mm -
RS-stocknr. 178-5160
FabrikantnummerLM2903DT
0,086 €
Each (On a Reel of 2500)
Aantal stuks
General Purpose Surface Mount SOIC Dual, Single CMOS, DL, ECL, MOS, TTL 2 1.3µs 8 2 → 36 V 5 x 4 x 1.25mm 5mm 4mm 1.25mm -
RS-stocknr. 714-0754
FabrikantnummerLM2903DT
0,236 €
Each (In a Pack of 20)
Aantal stuks
General Purpose Surface Mount SOIC Dual, Single CMOS, DL, ECL, MOS, TTL 2 1.3µs 8 2 → 36 V 5 x 4 x 1.25mm 5mm 4mm 1.25mm -
RS-stocknr. 178-7406
FabrikantnummerLM2903PT
0,108 €
Each (On a Reel of 4000)
Aantal stuks
Low Power Surface Mount TSSOP Dual, Single CMOS, DTL, ECL, MOS, TTL 2 1.3µs 8 2 → 36 V 4.5 x 3.1 x 1.05mm 4.5mm 3.1mm 1.05mm -
RS-stocknr. 880-5496
FabrikantnummerTS3704CDT
0,52 €
Each (In a Pack of 25)
Aantal stuks
Low Power Surface Mount SOIC Dual, Single Push-Pull 4 2µs 14 2.7 → 16 V 8.75 x 4 x 1.65mm 8.75mm 4mm 1.65mm 80dB
RS-stocknr. 860-7404
FabrikantnummerTS881ILT
0,523 €
Each (In a Pack of 10)
Aantal stuks
Low Power Surface Mount SOT-23 Single Push-Pull 1 160ns 5 0.85 → 5.5 V 2.2 x 1.35 x 1mm 2.2mm 1.35mm 1mm 78dB
RS-stocknr. 165-5527
FabrikantnummerTS3704CDT
0,237 €
Each (On a Reel of 2500)
Aantal stuks
Low Power Surface Mount SOIC Dual, Single Push-Pull 4 2µs 14 2.7 → 16 V 8.75 x 4 x 1.65mm 8.75mm 4mm 1.65mm 80dB
RS-stocknr. 714-0833
FabrikantnummerLM393DT
0,291 €
Each (In a Pack of 20)
Aantal stuks
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 1.25mm 4.9mm 3.9mm 1.25mm -
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. 829-1532
FabrikantnummerTS884IQ4T
1,476 €
Each (In a Pack of 5)
Aantal stuks
Low Power Surface Mount QFN Single Push-Pull 4 - 16 1.1 → 5.5 V 3.15 x 3.15 x 0.95mm 3.15mm 3.15mm 0.95mm 78dB
Nieuw
RS-stocknr. 189-1959
FabrikantnummerLM2904YST
0,388 €
Each (In a Pack of 25)
Aantal stuks
Low Power Surface Mount MiniSO Single Swing 2 - 8 3 → 30 V 3.2 x 3.1 x 0.95mm 3.2mm 3.1mm 0.95mm -
RS-stocknr. 760-9461
FabrikantnummerTS3022IST
1,078 €
Each (In a Pack of 5)
Aantal stuks
High Speed Surface Mount MSOP Single Push-Pull 2 0.009µs 8 1.8 → 5 V 3.2 x 3.1 x 0.95mm 3.2mm 3.1mm 0.95mm 67dB
RS-stocknr. 165-5284
FabrikantnummerTSX3702IDT
0,336 €
Each (On a Reel of 2500)
Aantal stuks
Low Power Surface Mount SOIC Dual, Single Push-Pull 2 2.4µs 8 2.7 → 16 V 5 x 4 x 1.5mm 5mm 4mm 1.5mm 90dB
RS-stocknr. 714-7370
FabrikantnummerTS3704IPT
0,669 €
Each (In a Pack of 10)
Aantal stuks
General Purpose Surface Mount TSSOP Dual, Single Push-Pull 4 2µs 14 3 → 15 V 5 x 4.4 x 1mm 5mm 4.4mm 1mm 80dB
RS-stocknr. 714-7367
FabrikantnummerLM339ADT
0,298 €
Each (In a Pack of 20)
Aantal stuks
General Purpose Surface Mount SOIC Dual, Single CMOS, DL, ECL, MOS, TTL 4 1.3µs 14 2 → 36 V 8.75 x 4 x 1.65mm 8.75mm 4mm 1.65mm -
RS-stocknr. 165-6615
FabrikantnummerTS3011ILT
1,024 €
Each (On a Reel of 3000)
Aantal stuks
High Speed Surface Mount SOT-23 Single Push-Pull 1 8ns 5 2.2 → 5 V 3 x 1.75 x 1.3mm 3mm 1.75mm 1.3mm 74dB
Nieuw
RS-stocknr. 189-1851
FabrikantnummerLM2903Q2T
0,103 €
Each (On a Reel of 3000)
Aantal stuks
Low Power Surface Mount DFN Dual, Single CMOS, DTL, ECL, MOS, TTL 2 1.3µs 8 2 → 36 V 2.05 x 2.05 x 0.7mm 2.05mm 2.05mm 0.7mm -