Comparators

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 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

  • 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.


...
Read more Read less

Filters

Viewing 1 - 20 of 956 products
Results per page
Description Price 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 Stock No. 121-8871
Mfr. Part No.LM393M/NOPB
SGD1.036
Each (In a Tube of 95)
units
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 Stock No. 912-9863
Mfr. Part No.ADCMP601BKSZ-R2
SGD5.294
Each (On a Reel of 250)
units
High Speed Surface Mount SC-70 Single CMOS, TTL 1 0.005µs 6 2.5 → 5.5 V 2.2 x 1.35 x 1mm 2.2mm 1.35mm 1mm 50dB
RS Stock No. 759-2727
Mfr. Part No.ADCMP601BKSZ-R2
SGD7.45
Each
units
High Speed Surface Mount SC-70 Single CMOS, TTL 1 0.005µs 6 2.5 → 5.5 V 2.2 x 1.35 x 1mm 2.2mm 1.35mm 1mm 50dB
RS Stock No. 536-1388
Mfr. Part No.LM393M/NOPB
SGD1.23
Each
units
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 Stock No. 709-7382
Mfr. Part No.AD96685BRZ
SGD12.92
Each
units
General Purpose Surface Mount SOIC Dual Complementary 1 - 16 - 10 x 4 x 1.5mm 10mm 4mm 1.5mm 90dB
RS Stock No. 170-2065
Mfr. Part No.LM211D
SGD0.147
Each (In a Tube of 75)
units
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 Stock No. 145-5313
Mfr. Part No.KA2803B
SGD0.738
Each (In a Tube of 50)
units
General Purpose Through Hole PDIP - - - - 8 - 10.15 x 6.35 x 3.3mm 10.15mm 6.35mm 3.3mm -
RS Stock No. 877-2740
Mfr. Part No.LM211DT
SGD0.533
Each (In a Pack of 20)
units
General Purpose Surface Mount SOIC Dual, Single TTL 1 200ns 8 5 V 5 x 4 x 1.65mm 5mm 4mm 1.65mm -
RS Stock No. 178-5191
Mfr. Part No.LM211DT
SGD0.15
Each (On a Reel of 2500)
units
General Purpose Surface Mount SOIC Dual, Single TTL 1 200ns 8 5 V 5 x 4 x 1.65mm 5mm 4mm 1.65mm -
RS Stock No. 649-497
Mfr. Part No.TLC3704CN
SGD2.24
Each
units
Low Power Through Hole PDIP Single Push-Pull 4 2.7µs 14 5 V 19.3 x 6.35 x 4.57mm 19.3mm 6.35mm 4.57mm 84dB
RS Stock No. 145-5720
Mfr. Part No.TLC3704CN
SGD1.677
Each (In a Tube of 25)
units
Low Power Through Hole PDIP Single Push-Pull 4 2.7µs 14 5 V 19.3 x 6.35 x 4.57mm 19.3mm 6.35mm 4.57mm 84dB
RS Stock No. 163-2404
Mfr. Part No.LM2903DG
SGD0.379
Each (In a Tube of 98)
units
General Purpose Surface Mount SOIC Dual, Single Open Collector 2 1.5µs 8 3 → 28 V 5 x 4 x 1.5mm 5mm 4mm 1.5mm -
RS Stock No. 671-0258
Mfr. Part No.KA2803B
SGD0.918
Each (In a Pack of 5)
units
General Purpose Through Hole PDIP - - - - 8 - 10.15 x 6.35 x 3.3mm 10.15mm 6.35mm 3.3mm -
RS Stock No. 463-656
Mfr. Part No.LM2903DG
SGD0.404
Each (In a Pack of 25)
units
General Purpose Surface Mount SOIC Dual, Single Open Collector 2 1.5µs 8 3 → 28 V 5 x 4 x 1.5mm 5mm 4mm 1.5mm -
RS Stock No. 709-7389
Mfr. Part No.AD96687BRZ
SGD13.05
Each
units
General Purpose Surface Mount SOIC Dual Complementary 2 - 16 - 10 x 4 x 1.5mm 10mm 4mm 1.5mm 90dB
RS Stock No. 100-0752
Mfr. Part No.LM393D
SGD0.371
Each (In a Tube of 75)
units
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 Stock No. 121-8421
Mfr. Part No.LM339N
SGD0.525
Each (In a Tube of 25)
units
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 Stock No. 732-1193
Mfr. Part No.LM193JG
SGD20.37
Each
units
Differential Through Hole CDIP Dual, Single Open Collector, Open Drain 2 1.3µs 8 2 → 36 V 10.16 x 7.11 x 4.57mm 10.16mm 7.11mm 4.57mm -
RS Stock No. 921-5201
Mfr. Part No.LM193JG
SGD18.91
Each (In a Tube of 31)
units
Differential Through Hole CDIP Dual, Single Open Collector, Open Drain 2 1.3µs 8 2 → 36 V 10.16 x 7.11 x 4.57mm 10.16mm 7.11mm 4.57mm -
RS Stock No. 121-8704
Mfr. Part No.LM339N/NOPB
SGD1.526
Each (In a Tube of 25)
units
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 -
Related Products
Texas Instruments TM4C123GH6PM microcontrollers are suitable for industrial ...
Description:
Texas Instruments TM4C123GH6PM microcontrollers are suitable for industrial applications including remote monitoring, electronic point-of-sale machines, test and measurement equipment, network appliances and switches, factory automation, HVAC and building control, gaming equipment, motion control, transportation, ...