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 mountThrough holeComparator power supply types.DualSingleVarious package types, pins, sizes, channels per chip, PSRR (power supply rejection ratio), CMRR (common mode rejection ratio) are all available.

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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. 661-2577
Mfr. Part No.LM239PWR
HK$2.607
Each (In a Pack of 10)
units
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 Stock No. 175-1627
Mfr. Part No.TLV7031DPWR
HK$1.784
Each (On a Reel of 3000)
units
Low Voltage Surface Mount X2SON Single Push-Pull 1 - 5 1.6 → 6.5 V 0.85 x 0.85 x 0.35mm 0.85mm 0.85mm 0.35mm 73dB
RS Stock No. 402-926
Mfr. Part No.MCP6547-I/P
BrandMicrochip
HK$4.782
Each (In a Pack of 10)
units
Low Power Through Hole PDIP Single Open Drain 2 - 8 3 V, 5 V 9.27 x 6.35 x 3.3mm 9.27mm 6.35mm 3.3mm 70dB
RS Stock No. 822-6639
Mfr. Part No.LT1714IGN#PBF
HK$68.53
Each
units
Low Power Surface Mount SSOP Dual, Single Rail to Rail 2 4ns 16 2.4 to 12 V 4.978 x 3.988 x 1.478mm 4.98mm 3.988mm 1.478mm 70dB
New
RS Stock No. 191-4003
Mfr. Part No.MAX921EPA+
HK$40.258
Each (In a Tube of 50)
units
- Through Hole PDIP Dual, Single CMOS, TTL 1 14µs 8 2.5 11 V 9.91 x 7.87 x 4.45mm 9.91mm 7.87mm 4.45mm 0.1mV/V
New
RS Stock No. 189-7335
Mfr. Part No.MAX9140EXK+T
HK$7.972
Each (On a Reel of 2500)
units
Low Power Surface Mount SC-70 Single Push-Pull 1 40ns 5 2.7 5.5 V 2.2 x 1.35 x 1mm 2.2mm 1.35mm 1mm 80µV/V
New
RS Stock No. 189-8879
Mfr. Part No.MAX9202EUD+
HK$34.722
Each (In a Pack of 5)
units
High Speed, Low Power Surface Mount TSSOP Dual, Single Push-Pull 2 ±0.007µs 14 4.75 → 10.5 V 5.1 x 4.5 x 0.95mm 5.1mm 4.5mm 0.95mm 50µV/V
RS Stock No. 731-3482
Mfr. Part No.BA10339F-E2
BrandROHM
HK$5.145
Each (In a Pack of 10)
units
General Purpose Surface Mount SOP Dual, Single Open Collector 4 1.3µs 14 3 → 36 V 8.7 x 4.4 x 1.5mm 8.7mm 4.4mm 1.5mm -
RS Stock No. 162-6434
Mfr. Part No.TLV1391CDBVT
HK$5.662
Each (On a Reel of 250)
units
General Purpose Surface Mount SOT-23 Single Open Collector 1 0.7µs 5 2 → 7 V 3.05 x 1.75 x 1.3mm 3.05mm 1.75mm 1.3mm -
RS Stock No. 912-6479
Mfr. Part No.ADCMP580BCPZ-WP
HK$135.848
Each (In a Tray of 50)
units
General Purpose Surface Mount LFCSP Dual Complementary 1 - 16 - 3 x 3 x 0.83mm 3mm 3mm 0.83mm 60dB
RS Stock No. 506-0372
Mfr. Part No.LT1716CS5#TRMPBF
HK$21.74
Each (In a Pack of 5)
units
General Purpose Surface Mount TSOT-23 Dual, Single Open Collector 1 - 5 3 28 V 2.9 x 1.75 x 0.9mm 2.9mm 1.75mm 0.9mm 110dB
RS Stock No. 175-1628
Mfr. Part No.TLV7041DPWR
HK$1.784
Each (On a Reel of 3000)
units
Low Voltage Surface Mount X2SON Single Open Drain 1 - 5 1.6 → 6.5 V 0.85 x 0.85 x 0.35mm 0.85mm 0.85mm 0.35mm 73dB
New
RS Stock No. 189-7339
Mfr. Part No.MAX9144ESD+
HK$22.226
Each (In a Tube of 50)
units
Low Power Surface Mount SOIC Single Push-Pull 4 - 14 2.7 → 5.5 V 8.75 x 4 x 1.5mm 8.75mm 4mm 1.5mm 80µV/V
RS Stock No. 538-4971
Mfr. Part No.ADCMP562BRQZ
HK$51.40
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. 121-8466
Mfr. Part No.LM2903P
HK$2.822
Each (In a Tube of 50)
units
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 -
RS Stock No. 163-2237
Mfr. Part No.NCS2200SQ2T2G
HK$3.311
Each (On a Reel of 3000)
units
Low Voltage Surface Mount SC-70 Single Complementary 1 16ns 5 6 V 2.2 x 1.35 x 1mm 2.2mm 1.35mm 1mm 65dB
RS Stock No. 146-1164
Mfr. Part No.MAX931CPA+
HK$36.874
Each (In a Tube of 50)
units
Low Power Through Hole PDIP Dual, Single - 1 12µs 8 3 → 9 V 9.91 x 7.87 x 4.45mm 9.91mm 7.87mm 4.45mm 80dB
RS Stock No. 661-2583
Mfr. Part No.LM2903PWR
HK$2.704
Each (In a Pack of 10)
units
Differential Surface Mount TSSOP Dual, Single Open Collector 2 1.3µs 8 3 → 28 V 3 x 4.4 x 1.15mm 3mm 4.4mm 1.15mm -
RS Stock No. 806-8054
Mfr. Part No.AD8611ARMZ-R2
HK$49.23
Each
units
High Speed Surface Mount MSOP Single Complementary 1 2.5ns 8 3 → 5 V 3.2 x 3.2 x 0.95mm 3.2mm 3.2mm 0.95mm 85dB
New
RS Stock No. 197-7572
Mfr. Part No.TLC393CP
HK$9.93
Each (In a Pack of 10)
units
Dual - PDIP Single Open Collector 2 - 8 5 V - - - - -
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