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 81 - 100 of 1237 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. 686-7515
Mfr. Part No.TS393IDT
$0.693
Each (In a Pack of 10)
units
Low Power Surface Mount SOIC Dual, Single Open Drain 2 2.5µs 8 3 → 15 V 4.9 x 3.9 x 1.25mm 4.9mm 3.9mm 1.25mm 71dB
RS Stock No. 761-8908
Mfr. Part No.LT6703HVIS5-3#TRMPBF
$2.72
Each
units
Low Voltage Surface Mount TSOT-23 Single Open Collector 1 - 5 1.4 → 18 V 2.9 x 1.75 x 0.9mm 2.9mm 1.75mm 0.9mm -
RS Stock No. 806-8054
Mfr. Part No.AD8611ARMZ-R2
$7.75
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
RS Stock No. 528-347
Mfr. Part No.TL331IDBVT
$0.76
Each (In a Pack of 25)
units
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 Stock No. 168-6422
Mfr. Part No.TS393IDT
$0.398
Each (On a Reel of 2500)
units
Low Power Surface Mount SOIC Dual, Single Open Drain 2 2.5µs 8 3 → 15 V 4.9 x 3.9 x 1.25mm 4.9mm 3.9mm 1.25mm 71dB
RS Stock No. 661-2668
Mfr. Part No.TL331IDBVR
$0.662
Each (In a Pack of 10)
units
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 Stock No. 923-3454
Mfr. Part No.TLV3501AIDBVT
$2.592
Each (On a Reel of 250)
units
General Purpose Surface Mount SOT-23 Single Push-Pull 1 - 6 3 V, 5 V 2.9 x 1.6 x 1.15mm 2.9mm 1.6mm 1.15mm 70dB
RS Stock No. 661-2781
Mfr. Part No.LM2901N
$0.467
Each (In a Pack of 10)
units
Differential 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. 761-7945
Mfr. Part No.LT1017IS8#PBF
$8.94
Each
units
Low Power Surface Mount SOIC Dual, Single Push-Pull 2 - 8 40 V 5.004 x 3.988 x 1.498mm 5mm 3.988mm 1.498mm 115dB
RS Stock No. 145-3273
Mfr. Part No.LM393DG
$0.178
Each (In a Tube of 98)
units
General Purpose Surface Mount SOIC Dual, Single Open Collector 2 1.3µs 8 3 → 28 V 5 x 4 x 1.5mm 5mm 4mm 1.5mm -
RS Stock No. 517-2374
Mfr. Part No.LM2903D
$0.407
Each (In a Pack of 20)
units
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 Stock No. 121-8868
Mfr. Part No.LM311M/NOPB
$1.046
Each (In a Tube of 95)
units
General Purpose Surface Mount SOIC Dual, Single Open Collector 1 0.2µs 8 9 to 28 V 4.9 x 3.9 x 1.45mm 4.9mm 3.9mm 1.45mm -
RS Stock No. 178-2306
Mfr. Part No.NJM2403D
$0.497
Each (In a Tube of 50)
units
General Purpose Through Hole PDIP Dual, Single Open Collector 2 1.5µs 8 3 → 28 V 8.8 x 6.4 x 3.4mm 8.8mm 6.4mm 3.4mm -
RS Stock No. 102-5623
Mfr. Part No.LMV7271MF/NOPB
$0.901
Each (On a Reel of 1000)
units
Low Power Surface Mount SOT-23 Single Push-Pull 1 - 5 3 V, 5 V 2.92 x 1.6 x 1.02mm 2.92mm 1.6mm 1.02mm 78dB
RS Stock No. 761-7933
Mfr. Part No.LT1016IS8#PBF
$19.56
Each
units
High Speed Surface Mount SOIC Dual, Single TTL 1 0.01µs 8 5 V 5.004 x 3.988 x 1.498mm 5mm 3.988mm 1.498mm 96dB
RS Stock No. 661-2810
Mfr. Part No.LM393AD
$0.448
Each (In a Pack of 10)
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. 651-1714
Mfr. Part No.LMV7271MF/NOPB
$1.542
Each (In a Pack of 5)
units
Low Power Surface Mount SOT-23 Single Push-Pull 1 - 5 3 V, 5 V 2.92 x 1.6 x 1.02mm 2.92mm 1.6mm 1.02mm 78dB
RS Stock No. 774-7532
Mfr. Part No.MCP6542-E/P
BrandMicrochip
$0.847
Each (In a Bag of 10)
units
General Purpose Through Hole PDIP Single Push-Pull 2 - 8 1.6 to 5.5 V 0.4 x 0.28 x 0.195in 10.16mm 0.28in 4.95mm 70dB
RS Stock No. 165-2236
Mfr. Part No.MCP6546T-I/OT
BrandMicrochip
$0.416
Each (On a Reel of 3000)
units
Low Power Surface Mount SOT-23 Single Open Drain 1 - 5 1.6 → 5.5 V 3.1 x 1.8 x 1.3mm 3.1mm 1.8mm 1.3mm 70dB
RS Stock No. 545-8173
Mfr. Part No.TLV3501AID
$4.598
Each (In a Pack of 5)
units
High Speed Surface Mount SOIC Single Push-Pull 1 - 8 3 V, 5 V 4.9 x 3.91 x 1.58mm 4.9mm 3.91mm 1.58mm 70dB
Related Products
The Texas Instruments LM193, LM293, LM393 and LM2903 ...
Description:
The Texas Instruments LM193, LM293, LM393 and LM2903 are dual differential input voltage comparators designed to operate from a single power supply over a wide range of voltages The common mode input voltage range includes ground and the devices have ...
Comparator ICs from ROHM meet all types, such ...
Description:
Comparator ICs from ROHM meet all types, such as bipolar, CMOS, ground sense (single supply), dual supply, high-voltage resistance, low noise, low saturation, low current consumption, and input/output full swing
Texas Instruments’ range of voltage comparators includes not ...
Description:
Texas Instruments’ range of voltage comparators includes not only conventional single, dual and quad comparator packages but also window comparators and over- & under-voltage supervisorsAlthough comparators and operational amplifiers are superficially similar devices their operation in practical applications ...
The Texas Instruments LM193, LM293, LM393 and LM2903 ...
Description:
The Texas Instruments LM193, LM293, LM393 and LM2903 are dual differential input voltage comparators designed to operate from a single power supply over a wide range of voltages The common mode input voltage range includes ground and the devices have ...