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    Comparators

    A Comparator is a circuit that accepts two voltages or currents and then switches the output showing which of the two is bigger. Comparators are found in components such as analogue to digital converters (ADCs). Comparators are like operational amplifiers except a comparator is designed specifically 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 either 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 analogue to digital (ADC). Two supply voltages 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
    • Micropower
    • Nano power
    • Precision
    • Push/pull output
    • Quad differential
    • Rail to rail
    • Voltage
    • Window

    Mounting Types

    Comparators can be found in both surface mount and through-hole mounting configurations to enable use in a wide variety of applications.

    Comparator power supply types

    Available in both single and dual power supply configurations, a comparator can easily be implemented into a robust solution.

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

    855 Products showing for Comparators

    Microchip
    General Purpose
    Surface Mount
    SOT-23
    Single
    Push-Pull
    1
    0.85µs
    6
    1.8 to 5.5 V
    3.1 x 1.8 x 1.3mm
    3.1mm
    1.8mm
    1.3mm
    70dB
    Texas Instruments
    -
    Surface Mount
    SOIC
    Dual, Single
    Open Collector
    2
    1.3µs
    14
    2 V → 36 V V
    -
    -
    -
    -
    -
    onsemi
    General Purpose
    Surface Mount
    SOIC
    Dual, Single
    Open Collector
    2
    1.5µs
    8
    3 to 28 V
    5 x 4 x 1.5mm
    5mm
    4mm
    1.5mm
    -
    Texas Instruments
    General Purpose
    Surface Mount
    SOT-23
    Single
    Open Collector
    1
    -
    5
    3 V
    2.92 x 1.6 x 1.02mm
    2.92mm
    1.6mm
    1.02mm
    -
    STMicroelectronics
    General Purpose
    Surface Mount
    SOT-23
    Dual, Single
    Open Collector
    1
    0.3µs
    5
    3 → 28 V
    3 x 1.75 x 1.3mm
    3mm
    1.75mm
    1.3mm
    -
    ROHM
    Ground Sense
    Surface Mount
    SSOP-B14
    Dual
    Analogue
    Analog
    1.3µs
    14
    3 V
    -
    -
    -
    -
    -
    STMicroelectronics
    Micropower
    Surface Mount
    TSSOP
    Single
    Push-Pull
    4
    500ns
    14
    2.7 → 10 V
    5.1 x 4.5 x 1.05mm
    5.1mm
    4.5mm
    1.05mm
    75dB
    ROHM
    Ground Sense
    Surface Mount
    SOP-J8
    Dual
    Analogue
    2
    1.3µs
    8
    3 V
    -
    -
    -
    -
    -
    Maxim Integrated
    High Speed
    Surface Mount
    DFN
    Single
    LVDS
    2
    -
    12
    2.7 → 3.6 V
    -
    -
    -
    -
    -
    STMicroelectronics
    High Speed
    Surface Mount
    SC-70
    Single
    Push-Pull
    1
    8ns
    5
    2.2 to 5 V
    2.2 x 1.35 x 1mm
    2.2mm
    1.35mm
    1mm
    74dB
    STMicroelectronics
    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
    Texas Instruments
    General Purpose
    Surface Mount
    SOIC
    Single
    Push-Pull
    2
    -
    8
    3 V, 5 V
    4.9 x 3.91 x 1.58mm
    4.9mm
    3.91mm
    1.58mm
    70dB
    Microchip
    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
    Maxim Integrated
    -
    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
    STMicroelectronics
    Micropower Rail-To-Rail
    Surface Mount
    SO8
    Single
    Push-Pull
    2
    500ns
    8
    2.7 → 10 V
    -
    -
    -
    -
    -
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