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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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. 528-353
FabrikantnummerLM2903DR
0,234 €
Each (In a Pack of 25)
Aantal stuks
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 -
RS-stocknr. 536-1388
FabrikantnummerLM393M/NOPB
0,78 €
Each
Aantal stuks
General Purpose Surface Mount SOIC Dual, Single Open Collector 2 1.3µs 8 3 → 28 V 4.9 x 3.9 x 1.45mm 4.9mm 3.9mm 1.45mm -
RS-stocknr. 169-5573
FabrikantnummerLM239PWR
0,09 €
Each (On a Reel of 2000)
Aantal stuks
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 -
RS-stocknr. 796-7997
FabrikantnummerLM111JG
17,57 €
Each (In a Pack of 2)
Aantal stuks
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 -
RS-stocknr. 922-2350
FabrikantnummerLM111JG
15,032 €
Each (In a Tube of 13)
Aantal stuks
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 -
RS-stocknr. 661-2668
FabrikantnummerTL331IDBVR
0,403 €
Each (In a Pack of 10)
Aantal stuks
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 -
RS-stocknr. 121-8871
FabrikantnummerLM393M/NOPB
0,889 €
Each (In a Tube of 95)
Aantal stuks
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 -
RS-stocknr. 121-9135
FabrikantnummerTL331IDBVR
0,191 €
Each (On a Reel of 3000)
Aantal stuks
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 -
RS-stocknr. 121-8671
FabrikantnummerLM2903D
0,31 €
Each (In a Tube of 75)
Aantal stuks
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 -
RS-stocknr. 517-2374
FabrikantnummerLM2903D
0,31 €
Each (In a Pack of 20)
Aantal stuks
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 -
RS-stocknr. 661-2577
FabrikantnummerLM239PWR
0,255 €
Each (In a Pack of 10)
Aantal stuks
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 -
RS-stocknr. 121-8704
FabrikantnummerLM339N/NOPB
0,958 €
Each (In a Tube of 25)
Aantal stuks
General Purpose Through Hole MDIP Dual, Single Open Collector 4 1.3µs 14 3 to 28 V 19.05 x 6.35 x 3.3mm 19.05mm 6.35mm 3.3mm -
RS-stocknr. 100-0752
FabrikantnummerLM393D
0,282 €
Each (In a Tube of 75)
Aantal stuks
General Purpose 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 -
RS-stocknr. 121-8421
FabrikantnummerLM339N
0,296 €
Each (In a Tube of 25)
Aantal stuks
General Purpose 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-stocknr. 124-4526
FabrikantnummerLM311N/NOPB
0,663 €
Each (In a Pack of 10)
Aantal stuks
Voltage Through Hole PDIP Single Single Ended 1 200ns 8 Maximum of 36 V 10.16 x 6.6 x 4.57mm 10.16mm 6.6mm 4.57mm -
RS-stocknr. 162-9865
FabrikantnummerTLV1701AIDBVT
0,668 €
Each (On a Reel of 250)
Aantal stuks
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 -
RS-stocknr. 866-0219
FabrikantnummerLM311N/NOPB
0,663 €
Each (In a Tube of 40)
Aantal stuks
General Purpose Through Hole PDIP Dual, Single DTL, MOS, RTL, TTL 1 200ns 8 5 V 10.16 x 6.6 x 4.57mm 10.16mm 6.6mm 4.57mm -
RS-stocknr. 527-198
FabrikantnummerLM339N
0,296 €
Each (In a Pack of 25)
Aantal stuks
General Purpose 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-stocknr. 528-343
FabrikantnummerLM393DR
0,233 €
Each (In a Pack of 25)
Aantal stuks
General Purpose 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 -
RS-stocknr. 900-9879
FabrikantnummerTLV1701AIDBVT
1,154 €
Each (In a Pack of 5)
Aantal stuks
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 -