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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.

    806 Products showing for Comparators

    STMicroelectronics
    Low Power
    Surface Mount
    SOIC
    Dual, Single
    Push-Pull
    2
    2.4µs
    8
    2.7 → 16 V
    5 x 4 x 1.5mm
    5mm
    4mm
    1.5mm
    90dB
    STMicroelectronics
    Low Power
    Surface Mount
    DFN
    Dual, Single
    CMOS, DTL, ECL, MOS, TTL
    2
    1.3µs
    8
    2 → 36 V
    2.05 x 2.05 x 0.7mm
    2.05mm
    2.05mm
    0.7mm
    -
    Texas Instruments
    General Purpose
    Surface Mount
    SOIC-8
    Dual, Single
    -
    1
    0.2µs
    8
    36 V
    -
    -
    -
    -
    -
    onsemi
    High Speed
    Surface Mount
    TSOP
    Single
    Rail to Rail
    1
    -
    5
    1.8 → 5.5 V
    3.15 x 1.65 x 1mm
    3.15mm
    1.65mm
    1mm
    81dB
    STMicroelectronics
    Low Power
    Surface Mount
    SOIC
    Dual, Single
    Open Collector
    2
    1.3µs
    8
    3 → 28 V
    4.9 x 3.9 x 1.25mm
    4.9mm
    3.9mm
    1.25mm
    -
    Texas Instruments
    -
    Surface Mount
    SOIC
    Dual, Single
    CMOS, MOS, TTL
    4
    -
    14
    2 → 36 V
    -
    -
    -
    -
    -
    STMicroelectronics
    Low Power
    Surface Mount
    SOT-23
    Single
    Open Drain
    1
    -
    5
    2.7 → 5 V
    3 x 1.75 x 1.3mm
    3mm
    1.75mm
    1.3mm
    -
    Texas Instruments
    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
    -
    STMicroelectronics
    Low Power
    Surface Mount
    TSSOP
    Dual, Single
    CMOS, DTL, ECL, MOS, TTL
    4
    1.3µs
    14
    2 → 32 V
    5.1 x 4.5 x 1.05mm
    5.1mm
    4.5mm
    1.05mm
    -
    STMicroelectronics
    General Purpose
    Surface Mount
    SOIC
    Dual, Single
    CMOS, DL, ECL, MOS, TTL
    4
    1.3µs
    14
    2 → 36 V
    8.75 x 4 x 1.65mm
    8.75mm
    4mm
    1.65mm
    -
    Nisshinbo Micro Devices
    Dual Comparator
    Through Hole
    SOP8
    Single
    Open Collector
    2
    1.3µs
    8
    2 → 36 V
    -
    -
    -
    -
    -
    Texas Instruments
    Differential
    Surface Mount
    SOIC
    Dual, Single
    Open Collector
    4
    1.3µs
    14
    3 → 28 V
    8.65 x 3.91 x 1.58mm
    8.65mm
    3.91mm
    1.58mm
    -
    Texas Instruments
    Differential
    Through Hole
    PDIP
    Dual, Single
    Open Collector
    2
    1.3µs
    8
    3 → 28 V
    9.81 x 6.35 x 4.57mm
    9.81mm
    6.35mm
    4.57mm
    -
    Microchip
    General Purpose
    Surface Mount
    SC-70
    Single
    Push-Pull
    1
    -
    5
    3 V, 5 V
    2 x 1.25 x 1mm
    2mm
    1.25mm
    1mm
    66dB
    ROHM
    -
    Surface Mount
    SOP
    Dual, Single
    Open Collector
    2
    1µs
    8
    3 → 32 V
    5 x 4.4 x 1.5mm
    5mm
    4.4mm
    1.5mm
    -
    Texas Instruments
    Dual
    -
    PDIP
    Single
    Open Collector
    2
    -
    8
    5 V
    -
    -
    -
    -
    -
    STMicroelectronics
    High Speed
    Surface Mount
    SOIC
    Single
    Push-Pull
    2
    0.009µs
    8
    1.8 → 5 V
    5 x 4 x 1.25mm
    5mm
    4mm
    1.25mm
    67dB
    Texas Instruments
    -
    Surface Mount
    SOIC
    Dual, Single
    CMOS, DTL, ECL, MOS, TTL
    2
    -
    8
    2 → 36 V
    -
    -
    -
    -
    -
    Texas Instruments
    Low Power
    Surface Mount
    SOIC
    -
    -
    -
    -
    8
    -
    4.9 x 3.9 x 1.45mm
    4.9mm
    3.9mm
    1.45mm
    -
    onsemi
    Low Power
    Surface Mount
    UDFN
    Single
    Open Drain
    1
    -
    6
    0.85 → 6 V
    1.2 x 1 x 0.5mm
    1.2mm
    1mm
    0.5mm
    80dB
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