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.


...
Voir plus Voir moins

Filtres

Afficher 1 - 20 des 928 produits
Nombre de résultats par page
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 528-353
Référence fabricantLM2903DR
0,234 €
Each (In a Pack of 25)
Unité
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 -
N° de stock RS 761-8908
Référence fabricantLT6703HVIS5-3#TRMPBF
1,98 €
Each
Unité
Low Power Surface Mount TSOT-23 Single Open Collector 1 - 5 1.4 → 18 V 2.9 x 1.75 x 0.9mm 2.9mm 1.75mm 0.9mm -
N° de stock RS 536-1388
Référence fabricantLM393M/NOPB
0,78 €
Each
Unité
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 -
N° de stock RS 121-8671
Référence fabricantLM2903D
0,31 €
Each (In a Tube of 75)
Unité
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 -
N° de stock RS 661-2668
Référence fabricantTL331IDBVR
0,415 €
Each (In a Pack of 10)
Unité
General Purpose Surface Mount SOT-23 Dual, Single Open Collector 1 1.3µs 5 3 → 28 V 2.9 x 1.6 x 1.15mm 2.9mm 1.6mm 1.15mm -
N° de stock RS 661-2577
Référence fabricantLM239PWR
0,255 €
Each (In a Pack of 10)
Unité
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 -
N° de stock RS 922-2350
Référence fabricantLM111JG
15,032 €
Each (In a Tube of 13)
Unité
General Purpose Through Hole CDIP Single Open Collector, Open Drain 1 115 ns, 165 ns 8 5 V 10.16 x 7.11 x 5.08mm 10.16mm 7.11mm 5.08mm -
N° de stock RS 517-2374
Référence fabricantLM2903D
0,31 €
Each (In a Pack of 20)
Unité
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 -
N° de stock RS 121-8871
Référence fabricantLM393M/NOPB
0,889 €
Each (In a Tube of 95)
Unité
General Purpose Surface Mount SOIC Dual, Single Open Collector 2 1.3µs 8 3 to 28 V 4.9 x 3.9 x 1.45mm 4.9mm 3.9mm 1.45mm -
N° de stock RS 169-5573
Référence fabricantLM239PWR
0,09 €
Each (On a Reel of 2000)
Unité
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 -
N° de stock RS 796-7997
Référence fabricantLM111JG
17,57 €
Each (In a Pack of 2)
Unité
General Purpose Through Hole CDIP Single Open Collector, Open Drain 1 115 ns, 165 ns 8 5 V 10.16 x 7.11 x 5.08mm 10.16mm 7.11mm 5.08mm -
N° de stock RS 919-9364
Référence fabricantLT6703HVIS5-3#TRMPBF
1,268 €
Each (On a Reel of 500)
Unité
Low Power Surface Mount TSOT-23 Single Open Collector 1 - 5 1.4 → 18 V 2.9 x 1.75 x 0.9mm 2.9mm 1.75mm 0.9mm -
N° de stock RS 121-9135
Référence fabricantTL331IDBVR
0,191 €
Each (On a Reel of 3000)
Unité
General Purpose Surface Mount SOT-23 Dual, Single Open Collector 1 1.3µs 5 3 to 28 V 2.9 x 1.6 x 1.15mm 2.9mm 1.6mm 1.15mm -
N° de stock RS 709-2028
Référence fabricantLM293P
0,291 €
Each (In a Pack of 20)
Unité
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 -
N° de stock RS 900-9879
Référence fabricantTLV1701AIDBVT
1,154 €
Each (In a Pack of 5)
Unité
Low Power Surface Mount SOT-23 Dual, Single Open Collector 1 - 5 2.2 → 36 V 3.05 x 1.75 x 1.3mm 3.05mm 1.75mm 1.3mm -
N° de stock RS 920-3475
Référence fabricantLM311D
0,409 €
Each (In a Tube of 75)
Unité
General Purpose Surface Mount SOIC Dual, Single Open Collector/Emitter 1 0.165µs 8 5 → 28 V 4.9 x 3.91 x 1.58mm 4.9mm 3.91mm 1.58mm -
N° de stock RS 761-8370
Référence fabricantLT1716IS5#TRMPBF
2,68 €
Each
Unité
Low Power Surface Mount TSOT-23 Dual, Single Push-Pull 1 - 5 2.7 → 44 V 2.9 x 1.75 x 0.9mm 2.9mm 1.75mm 0.9mm 110dB
N° de stock RS 144-9913
Référence fabricantLM339AD
0,291 €
Each (In a Tube of 50)
Unité
General Purpose 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 -
N° de stock RS 517-2352
Référence fabricantLM211D
0,571 €
Each (In a Pack of 20)
Unité
General Purpose Surface Mount SOIC Dual, Single Open Collector/Emitter 1 0.165µs 8 5 → 28 V 4.9 x 3.91 x 1.58mm 4.9mm 3.91mm 1.58mm -
N° de stock RS 661-2766
Référence fabricantLM139AD
2,72 €
Each (In a Pack of 5)
Unité
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 -