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.

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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. 165-3394
Mfr. Part No.MCP6566RT-E/OT
BrandMicrochip
$0.668
Each (On a Reel of 3000)
units
General Purpose Surface Mount SOT-23 Single Open Drain 1 - 5 1.8 → 5.5 V 3.1 x 1.8 x 1.3mm 3.1mm 1.8mm 1.3mm 65dB
RS Stock No. 738-7032
Mfr. Part No.MCP6566RT-E/OT
BrandMicrochip
$0.818
Each (In a Pack of 5)
units
General Purpose Surface Mount SOT-23 Single Open Drain 1 - 5 1.8 to 5.5 V 3.1 x 1.8 x 1.3mm 3.1mm 1.8mm 1.3mm 65dB
RS Stock No. 738-7026
Mfr. Part No.MCP6561RT-E/OT
BrandMicrochip
$0.88
Each (In a Pack of 5)
units
General Purpose Surface Mount SOT-23 Single Push-Pull 1 0.02µs 5 1.8 to 5.5 V 3.1 x 1.8 x 1.3mm 3.1mm 1.8mm 1.3mm 65dB
RS Stock No. 912-2994
Mfr. Part No.MCP6561RT-E/OT
BrandMicrochip
$0.572
Each (On a Reel of 3000)
units
General Purpose Surface Mount SOT-23 Single Push-Pull 1 0.02µs 5 1.8 → 5.5 V 3.1 x 1.8 x 1.3mm 3.1mm 1.8mm 1.3mm 65dB
RS Stock No. 738-7036
Mfr. Part No.MCP6567-E/MS
BrandMicrochip
$1.046
Each (In a Pack of 5)
units
General Purpose Surface Mount MSOP Single Open Drain 2 - 8 1.8 → 5.5 V 3 x 3 x 0.95mm 3mm 3mm 0.95mm 65dB
RS Stock No. 145-8991
Mfr. Part No.MCP6567-E/MS
BrandMicrochip
$0.884
Each (In a Tube of 100)
units
General Purpose Surface Mount MSOP Single Open Drain 2 - 8 1.8 → 5.5 V 3 x 3 x 0.95mm 3mm 3mm 0.95mm 65dB
RS Stock No. 165-4794
Mfr. Part No.MCP6562-E/SN
BrandMicrochip
$0.97
Each (In a Tube of 100)
units
General Purpose Surface Mount SOIC Single Push-Pull 2 - 8 3 V, 5 V 4.9 x 3.9 x 1.25mm 4.9mm 3.9mm 1.25mm 66dB
RS Stock No. 738-7020
Mfr. Part No.MCP6562-E/MS
BrandMicrochip
$1.048
Each (In a Pack of 5)
units
General Purpose Surface Mount MSOP Single Push-Pull 2 0.02µs 8 1.8 → 5.5 V 3 x 3 x 0.95mm 3mm 3mm 0.95mm 65dB
RS Stock No. 146-0175
Mfr. Part No.MCP6562-E/MS
BrandMicrochip
$0.884
Each (In a Tube of 100)
units
General Purpose Surface Mount MSOP Single Push-Pull 2 0.02µs 8 1.8 → 5.5 V 3 x 3 x 0.95mm 3mm 3mm 0.95mm 65dB
RS Stock No. 669-6275
Mfr. Part No.MCP6562-E/SN
BrandMicrochip
$0.942
Each (In a Pack of 5)
units
General Purpose Surface Mount SOIC Single Push-Pull 2 - 8 3 V, 5 V 4.9 x 3.9 x 1.25mm 4.9mm 3.9mm 1.25mm 66dB
RS Stock No. 165-1899
Mfr. Part No.MCP6541RT-I/OT
BrandMicrochip
$0.453
Each (On a Reel of 3000)
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. 823-4478
Mfr. Part No.MCP6541RT-I/OT
BrandMicrochip
$0.593
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. 165-2236
Mfr. Part No.MCP6546T-I/OT
BrandMicrochip
$0.453
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. 823-7950
Mfr. Part No.MCP6546T-I/OT
BrandMicrochip
$0.489
Each (In a Pack of 20)
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. 774-7532
Mfr. Part No.MCP6542-E/P
BrandMicrochip
$1.016
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. 669-6216
Mfr. Part No.MCP6541T-I/OT
BrandMicrochip
$0.485
Each (In a Pack of 10)
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. 165-4625
Mfr. Part No.MCP6541T-I/OT
BrandMicrochip
$0.453
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. 145-9012
Mfr. Part No.MCP6542-E/P
BrandMicrochip
$0.703
Each (In a Tube of 60)
units
General Purpose Through Hole PDIP Single Push-Pull 2 - 8 1.6 → 5.5 V 0.4 x 0.28 x 0.195in 10.16mm 0.28in 4.95mm 70dB
RS Stock No. 768-1362
Mfr. Part No.MCP6541UT-I/LT
BrandMicrochip
$0.439
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. 145-8957
Mfr. Part No.MCP6541-E/SN
BrandMicrochip
$0.567
Each (In a Tube of 100)
units
Low Power Surface Mount SOIC Single Push-Pull 1 - 8 3 V, 5 V 4.9 x 3.9 x 1.25mm 4.9mm 3.9mm 1.25mm 70dB