Comparators

A Comparator is a circuit that accepts two voltages or currents and then switches the output showing which of the two is bigger. Comparators are found in components such as analogue to digital converters (ADCs). Comparators are like operational amplifiers except a comparator is designed specifically 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 either 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 analogue to digital (ADC). Two supply voltages 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
  • Micropower
  • Nano power
  • Precision
  • Push/pull output
  • Quad differential
  • Rail to rail
  • Voltage
  • Window

Mounting Types

Comparators can be found in both surface mount and through-hole mounting configurations to enable use in a wide variety of applications.

Comparator power supply types

Available in both single and dual power supply configurations, a comparator can easily be implemented into a robust solution.

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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Description Prix 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
N° de stock RS 540-4384
Référence fabricantMAX942CPA+
3,93 €
Each
Unité
General Purpose Through Hole PDIP Single - 2 - 8 3 V, 5 V 9.91 x 7.87 x 4.45mm 9.91mm 7.87mm 4.45mm 81.94dB
Nouveau
N° de stock RS 216-7805
Référence fabricantMAX40014ANS09+T
0,481 €
Each (On a Reel of 2500)
Unité
Low Power Surface Mount WLP Single - 1 - 4 1.7 V - - - - -
N° de stock RS 146-535
Référence fabricantMAX941CPA+
3,54 €
Each
Unité
General Purpose Through Hole PDIP Single - 1 - 8 3 V, 5 V 9.91 x 7.87 x 4.45mm 9.91mm 7.87mm 4.45mm 81.94dB
N° de stock RS 190-4349
Référence fabricantMAX9010EXT+T
1,028 €
Each (On a Reel of 2500)
Unité
Low Power Surface Mount SC-70 Single TTL 1 - 6 4.5 → 5.5 V 2.15 x 1.35 x 1mm 2.15mm 1.35mm 1mm 95dB
N° de stock RS 189-7347
Référence fabricantMAX924ESE+
3,96 €
Each (In a Tube of 50)
Unité
Low Power Surface Mount SOIC Single Push-Pull 1 12µs 16 2.5 → 11 V 10 x 4 x 1.5mm 10mm 4mm 1.5mm 0.1mV/V
N° de stock RS 190-4368
Référence fabricantMAX934CSE+
3,068 €
Each (In a Tube of 50)
Unité
- Surface Mount SO Dual, Single - - 14µs 16 2.5 → 11 V 10 x 4 x 1.5mm 10mm 4mm 1.5mm 0.2mV/V
N° de stock RS 192-1921
Référence fabricantMAX934ESE+
2,904 €
Each (In a Tube of 50)
Unité
General Purpose Surface Mount SOIC Dual, Single CMOS, TTL 4 12µs 16 2.5 → 11 V 10 x 4 x 1.5mm 10mm 4mm 1.5mm 0.2mV/V
N° de stock RS 191-5182
Référence fabricantMAX997EUA+
3,504 €
Each (In a Pack of 5)
Unité
Low Power Surface Mount μMAX Single CMOS, TTL 1 - 8 2.7 → 5.5 V 3.1 x 3.1 x 0.95mm 3.1mm 3.1mm 0.95mm 1 (Maximum)mV/V
N° de stock RS 191-6969
Référence fabricantMAX902ESD+
7,99 €
Each
Unité
Low Power Surface Mount SO Dual, Single TTL 2 10ns 14 5 → 10 V 8.75 x 4 x 1.5mm 8.75mm 4mm 1.5mm 75µV/V
N° de stock RS 189-9095
Référence fabricantMAX913ESA+
4,815 €
Each (In a Pack of 2)
Unité
Low Power Surface Mount SOIC Dual, Single Complementary 1 - 8 5 → 10 V 5 x 4 x 1.5mm 5mm 4mm 1.5mm 110dB
N° de stock RS 189-8796
Référence fabricantMAX919EUK+T
0,896 €
Each (In a Pack of 10)
Unité
Low Power Surface Mount SOT-23 Single Push-Pull 1 6µs 5 1.8 → 5.5 V 3 x 1.75 x 1.3mm 3mm 1.75mm 1.3mm 0.5mV/V
N° de stock RS 189-9055
Référence fabricantMAX9203ESA+
1,978 €
Each (In a Pack of 5)
Unité
Low Power Surface Mount SOIC Single TTL 1 12ns 8 4.75 → 10.5 V 5 x 4 x 1.5mm 5mm 4mm 1.5mm 50µV/V
Nouveau
N° de stock RS 216-7806
Référence fabricantMAX40014ANS09+T
0,712 €
Each (In a Pack of 10)
Unité
Low Power Surface Mount WLP Single - 1 - 4 1.7 V - - - - -
N° de stock RS 165-9416
Référence fabricantMAX990EUA+
1,091 €
Each (In a Tube of 50)
Unité
Low Power Surface Mount μMAX Single Open Drain 2 - 8 2.5 → 5.5 V 3.1 x 3.1 x 0.95mm 3.1mm 3.1mm 0.95mm 80dB
N° de stock RS 799-3287
Référence fabricantMAX990EUA+
1,11 €
Each (In a Pack of 2)
Unité
Low Power Surface Mount μMAX Single Open Drain 2 - 8 2.5 → 5.5 V 3.1 x 3.1 x 0.95mm 3.1mm 3.1mm 0.95mm 80dB
N° de stock RS 191-3228
Référence fabricantMAX9648AXK+T
0,685 €
Each (On a Reel of 2500)
Unité
General Purpose Surface Mount SC-70 Single Open Drain - - 5 1.8 → 5.5 V 2.2 x 1.35 x 1mm 2.2mm 1.35mm 1mm -
N° de stock RS 189-9109
Référence fabricantMAX922CSA+
2,848 €
Each (In a Pack of 5)
Unité
Low Power Surface Mount SOIC Dual, Single CMOS, TTL 1 12µs 8 2.5 → 11 V 5 x 4 x 1.5mm 5mm 4mm 1.5mm 1mV/V
N° de stock RS 190-4350
Référence fabricantMAX9012ESA+
1,883 €
Each (In a Tube of 100)
Unité
Low Power Surface Mount SO Single TTL 2 - 8 4.5 → 5.5 V 5 x 4 x 1.5mm 5mm 4mm 1.5mm 95dB
Nouveau
N° de stock RS 212-3261
Référence fabricantMAX49140AXK/V+T
1,005 €
Each (On a Reel of 2500)
Unité
High Speed Through Hole SC-70 Single Push-Pull 1 0.03µs 5 3 V - - - - -
N° de stock RS 190-4379
Référence fabricantMAX978EEE+
4,112 €
Each (In a Tube of 100)
Unité
Low Power Surface Mount QSOP Single Rail to Rail - - 16 2.7 → 5.5 V 4.98 x 3.99 x 1.65mm 4.98mm 3.99mm 1.65mm 95dB