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.


...
Read more Read less

Filters

Viewing 1 - 20 of 121 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. 545-4799
Mfr. Part No.LT1016CN8#PBF
HK$62.99
Each
units
General Purpose Through Hole PDIP Dual, Single Complementary 1 - 8 5 V 10.16 x 6.48 x 3.3mm 10.16mm 6.48mm 3.3mm 96dB
RS Stock No. 159-8141
Mfr. Part No.ADCMP604BKSZ-R2
HK$37.904
Each (On a Reel of 250)
units
High Speed Surface Mount SC-70 Single LVDS 1 0.003µs 6 2.5 → 5.5 V 2.2 x 1.35 x 1mm 2.2mm 1.35mm 1mm 50dB
RS Stock No. 759-0241
Mfr. Part No.ADCMP604BKSZ-R2
HK$58.26
Each
units
High Speed Surface Mount SC-70 Single LVDS 1 0.003µs 6 2.5 → 5.5 V 2.2 x 1.35 x 1mm 2.2mm 1.35mm 1mm 50dB
RS Stock No. 545-5174
Mfr. Part No.LT1016CS8#PBF
HK$68.22
Each
units
General Purpose Surface Mount SOIC Dual, Single Complementary 1 - 8 5 V 5 x 3.99 x 1.48mm 5mm 3.99mm 1.48mm 96dB
RS Stock No. 809-9253
Mfr. Part No.AD8468WBKSZ-R7
HK$20.714
Each (On a Tape of 5)
units
Low Power Surface Mount SC-70 Single CMOS, Rail to Rail, TTL 1 45ns 6 2.5 → 5.5 V 2.2 x 1.35 x 1mm 2.2mm 1.35mm 1mm 45dB
RS Stock No. 195-082
Mfr. Part No.AD790JRZ
HK$90.38
Each
units
General Purpose Surface Mount SOIC Dual, Single TTL 1 - 8 5 V 5 x 4 x 1.5mm 5mm 4mm 1.5mm 95dB
RS Stock No. 160-3349
Mfr. Part No.AD8468WBKSZ-R7
HK$13.012
Each (On a Reel of 3000)
units
Low Power Surface Mount SC-70 Single CMOS, Rail to Rail, TTL 1 45ns 6 2.5 → 5.5 V 2.2 x 1.35 x 1mm 2.2mm 1.35mm 1mm 45dB
RS Stock No. 160-2626
Mfr. Part No.ADCMP350YKSZ-REEL7
HK$5.187
Each (On a Reel of 3000)
units
General Purpose Surface Mount SC-70 Single Open Drain 1 30 ns, 45 ns 4 2.25 → 5.5 V 2.2 x 1.35 x 1mm 2.2mm 1.35mm 1mm -
RS Stock No. 823-0206
Mfr. Part No.LT6703CDC-2#TRMPBF
HK$18.416
Each (In a Pack of 5)
units
Low Power Surface Mount DFN Single Open Collector 1 2.2µs 3 1.4 → 18 V 2 x 2 x 0.7mm 2mm 2mm 0.7mm -
RS Stock No. 155-7514
Mfr. Part No.LT6700IS6-3#TRMPBF
HK$24.801
Each (On a Reel of 500)
units
Low Power Surface Mount TSOT-23 Single Open Collector 2 2.2µs 6 1.4 → 18 V 2.9 x 1.5 x 0.9mm 2.9mm 1.5mm 0.9mm -
RS Stock No. 779-9372
Mfr. Part No.LT1671CMS8#PBF
HK$42.20
Each (In a Pack of 2)
units
High Speed Surface Mount MSOP Dual, Single CMOS, TTL 1 - 8 5 V 3 x 3 x 0.87mm 3mm 3mm 0.87mm 100dB
RS Stock No. 709-7385
Mfr. Part No.AD96687BPZ
HK$102.33
Each
units
General Purpose Surface Mount PLCC Dual Complementary 2 - 20 - 9.04 x 9.04 x 3.68mm 9.04mm 9.04mm 3.68mm 90dB
RS Stock No. 709-7512
Mfr. Part No.ADCMP602BRMZ
HK$49.32
Each
units
General Purpose Surface Mount MSOP Single - 1 - 8 3 V, 5 V 3 x 3 x 0.85mm 3mm 3mm 0.85mm 50dB
RS Stock No. 912-9655
Mfr. Part No.ADCMP608BKSZ-REEL7
HK$8.987
Each (On a Reel of 3000)
units
High Speed Surface Mount SC-70 Single CMOS, TTL 1 0.035 → 0.06µs 6 2.5 → 5.5 V 2.2 x 1.35 x 1mm 2.2mm 1.35mm 1mm 45dB
RS Stock No. 877-9054
Mfr. Part No.ADCMP572BCPZ-WP
HK$172.24
Each
units
High Speed Surface Mount LFCSP Single CML 1 - 16 5.4 V 3.1 x 3.1 x 0.75mm 3.1mm 3.1mm 0.75mm 65dB
RS Stock No. 155-7568
Mfr. Part No.LT1719IS6#TRMPBF
HK$26.604
Each (On a Reel of 500)
units
High Speed Surface Mount TSOT-23 Single Rail to Rail 1 2.5ns 6 2.7 → 6 V 2.9 x 1.75 x 0.9mm 2.9mm 1.75mm 0.9mm 65dB
RS Stock No. 761-8361
Mfr. Part No.LT1671CS8#PBF
HK$38.05
Each
units
High Speed Surface Mount SOIC Dual, Single TTL 1 - 8 5 V 5.004 x 3.988 x 1.498mm 5mm 3.988mm 1.498mm 100dB
RS Stock No. 708-9760
Mfr. Part No.ADCMP580BCPZ-WP
HK$177.37
Each
units
General Purpose Surface Mount LFCSP Dual Complementary 1 - 16 - 3 x 3 x 0.83mm 3mm 3mm 0.83mm 60dB
RS Stock No. 759-0140
Mfr. Part No.AD96687BQ
HK$160.32
Each
units
High Speed Through Hole PDIP Dual ECL 2 0.0025µs 16 - 21.34 x 7.87 x 3.56mm 21.34mm 7.87mm 3.56mm 90dB
RS Stock No. 761-8383
Mfr. Part No.LT1719IS8#PBF
HK$46.55
Each
units
General Purpose Surface Mount SOIC Dual, Single CMOS, TTL 1 0.0045µs 8 2.7 to 10.5 V 5.004 x 3.988 x 1.498mm 5mm 3.988mm 1.498mm 70dB