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. 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. 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. 829-1538
FabrikantnummerTS884IPT
€ 1,446
Each (In a Pack of 5)
Aantal stuks
Low Power Surface Mount TSSOP Single Push-Pull 4 - 14 1.1 → 5.5 V 5.1 x 4.5 x 1.05mm 5.1mm 4.5mm 1.05mm 78dB
RS-stocknr. 877-2756
FabrikantnummerLM311DT
€ 0,304
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. 168-6808
FabrikantnummerLM311D
€ 0,147
Each (In a Tube of 100)
Aantal stuks
General Purpose Surface Mount SOIC Dual, Single Open Collector 1 0.2µs 8 9 → 28 V 5 x 4 x 1.25mm 5mm 4mm 1.25mm -
RS-stocknr. 145-9498
FabrikantnummerTS884IPT
€ 0,736
Each (On a Reel of 2500)
Aantal stuks
Low Power Surface Mount TSSOP Single Push-Pull 4 - 14 1.1 → 5.5 V 5.1 x 4.5 x 1.05mm 5.1mm 4.5mm 1.05mm 78dB
RS-stocknr. 686-7521
FabrikantnummerTSM109AID
€ 0,542
Each (In a Pack of 10)
Aantal stuks
General Purpose Surface Mount SOIC Dual, Single - 2 1.3µs 8 3 → 28 V 5 x 4 x 1.65mm 5mm 4mm 1.65mm -
RS-stocknr. 168-6424
FabrikantnummerTSM109AID
€ 0,343
Each (In a Tube of 100)
Aantal stuks
General Purpose Surface Mount SOIC Dual, Single - 2 1.3µs 8 3 → 28 V 5 x 4 x 1.65mm 5mm 4mm 1.65mm -
RS-stocknr. 714-0770
FabrikantnummerLM311D
€ 0,265
Each (In a Pack of 20)
Aantal stuks
General Purpose Surface Mount SOIC Dual, Single Open Collector 1 0.2µs 8 9 → 28 V 5 x 4 x 1.25mm 5mm 4mm 1.25mm -
RS-stocknr. 168-8973
FabrikantnummerTS861ILT
€ 0,245
Each (On a Reel of 3000)
Aantal stuks
Dual CMOS, Rail to Rail Surface Mount SOT-23 Single Push-Pull 1 500ns 5 2.7 → 10 V 3 x 1.75 x 1.3mm 3mm 1.75mm 1.3mm 70dB
RS-stocknr. 145-8811
FabrikantnummerLM2903YST
€ 0,108
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. 791-9207
FabrikantnummerLM2903YST
€ 0,371
Each (On a Tape of 50)
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. 686-7515
FabrikantnummerTS393IDT
€ 0,589
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. 917-0760
FabrikantnummerTS861ILT
€ 0,572
Each (In a Pack of 10)
Aantal stuks
Dual CMOS, Rail to Rail Surface Mount SOT-23 Single Push-Pull 1 500ns 5 2.7 → 10 V 3 x 1.75 x 1.3mm 3mm 1.75mm 1.3mm 70dB
RS-stocknr. 168-6422
FabrikantnummerTS393IDT
€ 0,282
Each (On a Reel of 2500)
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. 877-2740
FabrikantnummerLM211DT
€ 0,352
Each (In a Pack of 20)
Aantal stuks
General Purpose Surface Mount SOIC Dual, Single TTL 1 200ns 8 5 V 5 x 4 x 1.65mm 5mm 4mm 1.65mm -
RS-stocknr. 880-5336
FabrikantnummerLM219DT
€ 0,701
Each (In a Pack of 10)
Aantal stuks
General Purpose Surface Mount SOIC Single Open Collector, TTL 2 80ns 14 ±5 → ±15 V 8.75 x 4 x 1.65mm 8.75mm 4mm 1.65mm -
RS-stocknr. 178-5191
FabrikantnummerLM211DT
€ 0,129
Each (On a Reel of 2500)
Aantal stuks
General Purpose Surface Mount SOIC Dual, Single TTL 1 200ns 8 5 V 5 x 4 x 1.65mm 5mm 4mm 1.65mm -
RS-stocknr. 920-6355
FabrikantnummerLM319DT
€ 0,21
Each (On a Reel of 2500)
Aantal stuks
High Speed Surface Mount SOIC Single TTL 2 80ns 14 5 → ±15 V 8.75 x 4 x 1.65mm 8.75mm 4mm 1.65mm -
RS-stocknr. 760-9468
FabrikantnummerTS3022IDT
€ 1,296
Each (In a Pack of 5)
Aantal stuks
High Speed Surface Mount SOIC Single Push-Pull 2 0.009µs 8 1.8 → 5 V 5 x 4 x 1.25mm 5mm 4mm 1.25mm 67dB