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 1109 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. 923-3454
Mfr. Part No.TLV3501AIDBVT
$3.23
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. 160-1749
Mfr. Part No.AD8611ARMZ-R2
$6.52
Each (On a Reel of 250)
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. 121-9135
Mfr. Part No.TL331IDBVR
$0.343
Each (On a Reel of 3000)
units
General Purpose Surface Mount SOT-23 Dual, Single Open Collector 1 1.3µs 5 3 to 28 V 2.9 x 1.6 x 1.15mm 2.9mm 1.6mm 1.15mm -
RS Stock No. 649-497
Mfr. Part No.TLC3704CN
$2.59
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. 823-4478
Mfr. Part No.MCP6541RT-I/OT
BrandMicrochip
$0.569
Each (In a Pack of 20)
units
Low Power Surface Mount SOT-23 Single Push-Pull 1 0.85µs 5 1.6 → 5.5 V 3.1 x 1.8 x 1.3mm 3.1mm 1.8mm 1.3mm 70dB
RS Stock No. 657-0993
Mfr. Part No.NJM2403D
$1.30
Each (In a Pack of 5)
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. 661-2595
Mfr. Part No.LM3302DR
$1.28
Each (In a Pack of 5)
units
General Purpose Surface Mount SOIC Dual, Single Open Collector 4 1.3µs 14 3 → 24 V 8.65 x 3.91 x 1.58mm 8.65mm 3.91mm 1.58mm -
RS Stock No. 922-2350
Mfr. Part No.LM111JG
$33.48
Each (In a Tube of 13)
units
General Purpose Through Hole CDIP Single Open Collector, Open Drain 1 115 ns, 165 ns 8 5 V 10.16 x 7.11 x 5.08mm 10.16mm 7.11mm 5.08mm -
RS Stock No. 145-0395
Mfr. Part No.TLC393CP
$1.93
Each (In a Tube of 50)
units
Low Power Through Hole PDIP Single Open Drain 2 - 8 5 V 9.81 x 6.35 x 4.57mm 9.81mm 6.35mm 4.57mm 84dB
RS Stock No. 545-8173
Mfr. Part No.TLV3501AID
$5.48
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
RS Stock No. 761-7933
Mfr. Part No.LT1016IS8#PBF
$21.77
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. 761-6172
Mfr. Part No.LMC7215IM5/NOPB
$2.372
Each (In a Pack of 5)
units
Low Power Surface Mount SOT-23 Dual Push-Pull 1 - 5 - 2.92 x 1.6 x 1.02mm 2.92mm 1.6mm 1.02mm 80dB
RS Stock No. 796-7997
Mfr. Part No.LM111JG
$32.435
Each (In a Pack of 2)
units
General Purpose Through Hole CDIP Single Open Collector, Open Drain 1 115 ns, 165 ns 8 5 V 10.16 x 7.11 x 5.08mm 10.16mm 7.11mm 5.08mm -
RS Stock No. 121-8745
Mfr. Part No.LM392N/NOPB
$1.93
Each (In a Tube of 40)
units
Low Power Through Hole MDIP - - - - 8 - 9.27 x 6.35 x 3.3mm 9.27mm 6.35mm 3.3mm -
RS Stock No. 102-5623
Mfr. Part No.LMV7271MF/NOPB
$0.997
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. 774-7532
Mfr. Part No.MCP6542-E/P
BrandMicrochip
$0.901
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. 122-3374
Mfr. Part No.AS331KTR-G1
$0.159
Each (On a Reel of 3000)
units
Low Power Surface Mount SOT-23 Dual, Single Open Collector 1 1.3µs 5 2 → 36 V 3.02 x 1.7 x 1.3mm 3.02mm 1.7mm 1.3mm -
RS Stock No. 165-4625
Mfr. Part No.MCP6541T-I/OT
BrandMicrochip
$0.456
Each (On a Reel of 3000)
units
Low Power Surface Mount SOT-23 Single Push-Pull 1 - 5 3 V, 5 V 3.1 x 1.8 x 1.3mm 3.1mm 1.8mm 1.3mm 70dB
RS Stock No. 860-7404
Mfr. Part No.TS881ILT
$1.89
Each (In a Pack of 10)
units
Low Power Surface Mount SOT-23 Single Push-Pull 1 160ns 5 0.85 → 5.5 V 2.2 x 1.35 x 1mm 2.2mm 1.35mm 1mm 78dB
RS Stock No. 536-1388
Mfr. Part No.LM393M/NOPB
$1.77
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 -
Related Products
LMx11 family Single Comparators The LM111, LM211 and ...
Description:
LMx11 family Single Comparators The LM111, LM211 and LM311 from Texas Instruments are differential input voltage comparators with a wide operating voltage range and 200 ns response time The inputs of these devices can be isolated from system ground and ...
LMx11 family Single Comparators The LM111, LM211 and ...
Description:
LMx11 family Single Comparators The LM111, LM211 and LM311 from Texas Instruments are differential input voltage comparators with a wide operating voltage range and 200 ns response time The inputs of these devices can be isolated from system ground and ...
LMx93/LM2903 family Dual Comparators The Texas Instruments LM193, ...
Description:
LMx93/LM2903 family Dual Comparators 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 ...
LMx39/LM2901 family Quad Comparators The Texas Instruments LM139, ...
Description:
LMx39/LM2901 family Quad Comparators The Texas Instruments LM139, LM239, LM339 and LM2901 are quad 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 ...