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 1121 - 1135 of 1135 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. 190-4372
Mfr. Part No.MAX944CSD+
SGD7.008
Each (In a Tube of 50)
units
High Speed, Low Power Surface Mount SO Single - 4 - 14 2.7 → 5.5 V 8.75 x 4 x 1.5mm 8.75mm 4mm 1.5mm 80µV/V
RS Stock No. 774-1284
Mfr. Part No.TLV3201AIDCKT
SGD2.326
Each (In a Bag of 5)
units
Low Power Surface Mount SC-70 Single Push-Pull 1 - 5 2.7 → 5.5 V 2.15 x 1.4 x 1mm 2.15mm 1.4mm 1mm 70dB
RS Stock No. 732-0944
Mfr. Part No.TLC374MD
SGD3.214
Each (In a Pack of 5)
units
General Purpose Surface Mount SOIC Dual, Single Open Collector, Open Drain 4 0.2µs 14 4 → 16 V 8.75 x 4 x 1.5mm 8.75mm 4mm 1.5mm -
RS Stock No. 534-4715
Mfr. Part No.LMV331M7/NOPB
SGD1.36
Each
units
General Purpose Surface Mount SC-70 Single Open Collector 1 - 5 3 V 2 x 1.25 x 0.9mm 2mm 1.25mm 0.9mm -
RS Stock No. 162-9577
Mfr. Part No.NCV2903DR2G
SGD0.164
Each (On a Reel of 2500)
units
General Purpose Surface Mount SOIC Dual, Single CMOS, DTL, ECL, MOS, TTL 2 1.5µs 8 2 → 36 V dc 5 x 4 x 1.5mm 5mm 4mm 1.5mm -
RS Stock No. 917-3523
Mfr. Part No.LT1716CS5#TRMPBF
SGD3.209
Each (On a Reel of 500)
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. 761-8377
Mfr. Part No.LT1715IMS#PBF
SGD14.16
Each
units
High Speed Surface Mount MSOP Dual, Single CMOS, TTL 2 0.004µs 10 2.7 → 12 V 3 x 3 x 0.86mm 3mm 3mm 0.86mm 70dB
RS Stock No. 523-9809
Mfr. Part No.AD790JNZ
SGD15.18
Each (In a Tube of 48)
units
General Purpose Through Hole PDIP Dual, Single - 1 - 8 5 V 9.27 x 7.24 x 3.43mm 9.27mm 7.24mm 3.43mm 95dB
RS Stock No. 162-5601
Mfr. Part No.TLV1391IDBVT
SGD0.963
Each (On a Reel of 250)
units
General Purpose Surface Mount SOT-23 Single Open Collector 1 0.65µs 5 3 V, 5 V 2.9 x 1.6 x 1.15mm 2.9mm 1.6mm 1.15mm -
RS Stock No. 190-4380
Mfr. Part No.MAX985EUK+T
SGD3.089
Each (On a Reel of 2500)
units
Micro Power Comparator Surface Mount SOT-23 Dual, Single Push-Pull 1 - 5 2.5 → 5.5 V 3 x 1.75 x 1.3mm 3mm 1.75mm 1.3mm 80dB
RS Stock No. 822-9937
Mfr. Part No.LT1721CS#PBF
SGD16.32
Each
units
Low Power Surface Mount SOIC Single Rail to Rail, Swing 4 2.5ns 16 2.7 → 6 V 5.004 x 3.988 x 1.498mm 5mm 3.988mm 1.498mm 70dB
RS Stock No. 768-1350
Mfr. Part No.MCP6541T-I/LT
BrandMicrochip
SGD0.577
Each (In a Pack of 10)
units
General Purpose Surface Mount SC-70 Single Push-Pull 1 - 5 1.6 → 5.5 V 2.25 x 1.35 x 1mm 2.25mm 1.35mm 1mm 70dB
RS Stock No. 189-1939
Mfr. Part No.LM2902Q4T
SGD0.491
Each (In a Pack of 25)
units
Low Power Surface Mount QFN Dual, Single - 4 - 16 3 → 30 V 3.1 x 3.1 x 0.95mm 3.1mm 3.1mm 0.95mm -
RS Stock No. 799-8323
Mfr. Part No.MAX924ESE+
SGD8.30
Each
units
Low Voltage Surface Mount SOIC Single Push-Pull 1 12µs 16 2.5 → 11 V 10 x 4 x 1.5mm 10mm 4mm 1.5mm 0.1mV/V
RS Stock No. 145-6595
Mfr. Part No.LM319AM/NOPB
SGD2.015
Each (In a Tube of 55)
units
High Speed Surface Mount SOIC Dual DTL, RTL, TTL 2 80µs 14 - 8.738 x 3.988 x 1.499mm 8.74mm 3.99mm 1.5mm -
Related Products
The LM111, LM211 and LM311 from Texas Instruments ...
Description:
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 the uncommitted outputs can ...
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 supervisors.Although comparators and operational amplifiers are superficially similar devices their operation in practical applications ...
The Texas Instruments LM139, LM239, LM339 and LM2901 ...
Description:
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 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.