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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Beskrivning Pris 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-artikelnummer 189-9095
Tillv. art.nrMAX913ESA+
VarumärkeMaxim Integrated
49,785 kr
Each (In a Pack of 2)
Enheter
Low Power Surface Mount SOIC Dual, Single Complementary 1 - 8 5 → 10 V 5 x 4 x 1.5mm 5mm 4mm 1.5mm 110dB
RS-artikelnummer 191-3328
Tillv. art.nrMAX9034AUD+T
VarumärkeMaxim Integrated
8,396 kr
Each (On a Reel of 2500)
Enheter
- Surface Mount TSSOP Single Rail to Rail - - 14 2.5 5.5 V 5.1 x 4.5 x 0.95mm 5.1mm 4.5mm 0.95mm 100dB
RS-artikelnummer 761-7945
Tillv. art.nrLT1017IS8#PBF
VarumärkeAnalog Devices
58,32 kr
Each
Enheter
Low Power Surface Mount SOIC Dual, Single Push-Pull 2 - 8 40 V 5.004 x 3.988 x 1.498mm 5mm 3.988mm 1.498mm 115dB
RS-artikelnummer 122-3374
Tillv. art.nrAS331KTR-G1
VarumärkeDiodesZetex
0,793 kr
Each (On a Reel of 3000)
Enheter
Low Power Surface Mount SOT-23 Dual, Single Open Collector 1 1.3µs 5 2 → 36 V 3.02 x 1.7 x 1.3mm 3.02mm 1.7mm 1.3mm -
RS-artikelnummer 169-8412
Tillv. art.nrMAX9142ESA+
VarumärkeMaxim Integrated
16,713 kr
Each (In a Tube of 100)
Enheter
Low Power Surface Mount SOIC Single Push-Pull 2 - 8 2.7 → 5.5 V 3 x 1.75 x 1.3mm 3mm 1.75mm 1.3mm 80µV/V
RS-artikelnummer 190-4394
Tillv. art.nrMAX999EUK+T
VarumärkeMaxim Integrated
36,703 kr
Each (On a Reel of 2500)
Enheter
- Surface Mount SOT-23 - - - - 5 2.7 5.5 V 3 x 1.75 x 1.3mm 3mm 1.75mm 1.3mm 0.1mV/V
RS-artikelnummer 171-5803
Tillv. art.nrBA2901SF-E2
VarumärkeROHM
3,158 kr
Each (On a Reel of 2500)
Enheter
- Surface Mount SOP Dual, Single Open Collector 4 1.3µs 14 2 → 36 V 8.7 x 4.4 x 1.5mm 8.7mm 4.4mm 1.5mm -
RS-artikelnummer 160-1740
Tillv. art.nrAD8469WBRMZ
VarumärkeAnalog Devices
16,29 kr
Each (In a Tube of 50)
Enheter
High Speed Surface Mount MSOP Single CMOS, TTL 1 45 → 75ns 8 2.5 → 5.5 V 3.2 x 3.2 x 0.95mm 3.2mm 3.2mm 0.95mm 50 (Min.)dB
RS-artikelnummer 192-5025
Tillv. art.nrTS3011IYQ3T
VarumärkeSTMicroelectronics
10,237 kr
Each (In a Pack of 10)
Enheter
High Speed Surface Mount DFN Single Rail to Rail 1 - 8 2.2 → 5 V 2.05 x 2.05 x 0.7mm 2.05mm 2.05mm 0.7mm 68dB
RS-artikelnummer 145-8811
Tillv. art.nrLM2903YST
VarumärkeSTMicroelectronics
0,673 kr
Each (On a Reel of 1000)
Enheter
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-artikelnummer 799-8298
Tillv. art.nrMAX9201ESE+
VarumärkeMaxim Integrated
42,08 kr
Each
Enheter
High Speed, Low Power Surface Mount SOIC Single Push-Pull 1 7ns 16 4.75 → 10.5 V 10 x 4 x 1.5mm 10mm 4mm 1.5mm 50µV/V
RS-artikelnummer 709-5496
Tillv. art.nrAD8564ARZ
VarumärkeAnalog Devices
76,83 kr
Each
Enheter
General Purpose Surface Mount SOIC Dual, Single - 4 - 16 5 V 10 x 4 x 1.5mm 10mm 4mm 1.5mm 85dB
RS-artikelnummer 165-8920
Tillv. art.nrMAX9016AEKA+T
VarumärkeMaxim Integrated
7,022 kr
Each (On a Reel of 2500)
Enheter
Low Power Surface Mount SOT-23 Single Open Drain 1 1.6µs 8 1.8 → 5.5 V 3 x 1.75 x 1.3mm 3mm 1.75mm 1.3mm -
RS-artikelnummer 806-2817
Tillv. art.nrLM339AM
VarumärkeON Semiconductor
3,205 kr
Each (In a Tube of 54)
Enheter
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-artikelnummer 175-1638
Tillv. art.nrTLV7031DPWR
VarumärkeTexas Instruments
1,518 kr
Each (In a Pack of 25)
Enheter
Low Voltage Surface Mount X2SON Single Push-Pull 1 - 5 1.6 → 6.5 V 0.85 x 0.85 x 0.35mm 0.85mm 0.85mm 0.35mm 73dB
RS-artikelnummer 182-2491
Tillv. art.nrTLC372CP
VarumärkeTexas Instruments
10,03 kr
Each
Enheter
General Purpose Through Hole PDIP Dual, Single Open Drain 2 0.65µs 8 5 → 15 V 9.81 x 6.35 x 4.57mm 9.81mm 6.35mm 4.57mm -
RS-artikelnummer 661-2781
Tillv. art.nrLM2901N
VarumärkeTexas Instruments
3,309 kr
Each (In a Pack of 10)
Enheter
Differential Through Hole PDIP Dual, Single Open Collector 4 1.3µs 14 3 → 28 V 19.3 x 6.35 x 4.57mm 19.3mm 6.35mm 4.57mm -
RS-artikelnummer 191-4006
Tillv. art.nrMAX975EUA+
VarumärkeMaxim Integrated
28,983 kr
Each (In a Tube of 50)
Enheter
High Speed, Low Power Surface Mount μMAX Single Rail to Rail 1 - 8 2.7 → 5.25 V 3.1 x 3.1 x 0.95mm 3.1mm 3.1mm 0.95mm 82dB
RS-artikelnummer 190-6472
Tillv. art.nrMAX998ESA+
VarumärkeMaxim Integrated
34,164 kr
Each (In a Pack of 5)
Enheter
High Speed, Low Power Surface Mount SO Single Rail to Rail 1 - 8 2.7 → 5.5 V 5 x 4 x 1.5mm 5mm 4mm 1.5mm 95dB
RS-artikelnummer 145-9204
Tillv. art.nrLM339D
VarumärkeSTMicroelectronics
0,726 kr
Each (In a Tube of 50)
Enheter
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 -
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