Comparators

What is a Comparator?

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 analog to digital (ADC). Two supply voltage 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, Micro power, 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 187 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. 759-0241
Mfr. Part No.ADCMP604BKSZ-R2
HK$53.48
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. 159-8141
Mfr. Part No.ADCMP604BKSZ-R2
HK$37.91
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. 545-4799
Mfr. Part No.LT1016CN8#PBF
HK$59.93
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. 153-3393
Mfr. Part No.LT1016CN8#PBF
HK$39.782
Each (In a Tube of 50)
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. 177-7297
Mfr. Part No.LT1394CS8#PBF
HK$44.789
Each (In a Tube of 100)
units
High Speed Surface Mount SOIC Dual, Single CMOS, TTL 1 - 8 5 V 5.004 x 3.89 x 1.498mm 5mm 3.89mm 1.498mm 100dB
RS Stock No. 779-9252
Mfr. Part No.LT1394CS8#PBF
HK$52.52
Each (In a Pack of 2)
units
High Speed Surface Mount SOIC Dual, Single CMOS, TTL 1 - 8 5 V 5.004 x 3.89 x 1.498mm 5mm 3.89mm 1.498mm 100dB
RS Stock No. 195-082
Mfr. Part No.AD790JRZ
HK$82.40
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. 145-6170
Mfr. Part No.LT1016CS8#PBF
HK$41.084
Each (In a Tube of 100)
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. 160-3349
Mfr. Part No.AD8468WBKSZ-R7
HK$11.315
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. 912-7031
Mfr. Part No.AD790JRZ
HK$65.55
Each (In a Tube of 98)
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. 545-5174
Mfr. Part No.LT1016CS8#PBF
HK$64.87
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$19.08
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. 807-1729
Mfr. Part No.ADCMP603BCPZ-WP
HK$42.70
Each (In a Pack of 2)
units
High Speed Surface Mount LFCSP VQ Single Complementary 1 - 12 2.5 → 5.5 V 3 x 3 x 0.95mm 3mm 3mm 0.95mm 50dB
RS Stock No. 145-7222
Mfr. Part No.LT1720CMS8#PBF
HK$43.818
Each (In a Tube of 50)
units
High Speed Surface Mount MSOP Single Rail to Rail 2 2.5ns 8 2.7 → 6 V 3 x 3 x 0.9984mm 3mm 3mm 0.998mm 70dB
RS Stock No. 545-7136
Mfr. Part No.LTC1440CS8#PBF
HK$29.97
Each
units
Low Power Surface Mount SOIC Dual, Single - 1 - 8 3 → 9 V 5 x 3.99 x 1.5mm 5mm 3.99mm 1.5mm 80dB
RS Stock No. 912-7514
Mfr. Part No.AD8561ANZ
HK$37.22
Each (In a Tube of 50)
units
General Purpose Through Hole PDIP Dual, Single Complementary 1 - 8 5 V, 9 V 9.27 x 7.24 x 3.43mm 9.27mm 7.24mm 3.43mm 85dB
RS Stock No. 158-0331
Mfr. Part No.LT1720IDD#PBF
HK$51.898
Each (In a Tube of 121)
units
General Purpose Surface Mount DFN Single Rail to Rail 2 - 8 2.7 → 6 V 3 x 3 x 0.7mm 3mm 3mm 0.7mm 70dB
RS Stock No. 538-4971
Mfr. Part No.ADCMP562BRQZ
HK$52.45
Each
units
General Purpose Surface Mount QSOP Dual Complementary 2 - 20 - 8.66 x 3.91 x 1.65mm 8.66mm 3.91mm 1.65mm 80dB
RS Stock No. 759-0140
Mfr. Part No.AD96687BQ
HK$160.14
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. 160-4488
Mfr. Part No.ADCMP354YKSZ-REEL7
HK$4.51
Each (On a Reel of 3000)
units
General Purpose Surface Mount SC-70 Single Open Drain 1 30ns 4 2.25 → 5.5 V 2.2 x 1.35 x 1mm 2.2mm 1.35mm 1mm -