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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Part Details Brand 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 Typical Dual Supply Voltage Typical PSRR Typical Voltage Gain Maximum Operating Temperature Minimum Operating Temperature Automotive Standard
BA2903YFV-CE2 ROHM, Dual Comparator, 1.3μs 2 → 36 V 8-Pin SSOP
  • £ 0.336
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  • RS Stock No. 184-8553
  • Brand ROHM
  • Mfr. Part No. BA2903YFV-CE2
ROHM - Surface Mount SSOP Single - 2 1.3µs 8 2 → 36 V 4.4 x 3 x 1.15mm 4.4mm 3mm 1.15mm - - - 100 dB 125 °C -40 °C AEC-Q100
BA2903YFV-CE2 ROHM, Dual Comparator, 1.3μs 2 → 36 V 8-Pin SSOP
  • RS Stock No. 184-8660
  • Brand ROHM
  • Mfr. Part No. BA2903YFV-CE2
ROHM - Surface Mount SSOP Single - 2 1.3µs 8 2 → 36 V 4.4 x 3 x 1.15mm 4.4mm 3mm 1.15mm - - - 100 dB 125 °C -40 °C AEC-Q100
BA82901YF-CE2 ROHM, Triple Comparator, 1.3μs 2 → 36 V 8-Pin SOP
  • RS Stock No. 184-8640
  • Brand ROHM
  • Mfr. Part No. BA82901YF-CE2
ROHM - Surface Mount SOP Single - 3 1.3µs 8 2 → 36 V 5 x 4.4 x 1.5mm 5mm 4.4mm 1.5mm - - - 100 dB 125 °C -40 °C AEC-Q100
BA82901YF-CE2 ROHM, Triple Comparator, 1.3μs 2 → 36 V 8-Pin SOP
  • £ 0.537
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  • RS Stock No. 184-8574
  • Brand ROHM
  • Mfr. Part No. BA82901YF-CE2
ROHM - Surface Mount SOP Single - 3 1.3µs 8 2 → 36 V 5 x 4.4 x 1.5mm 5mm 4.4mm 1.5mm - - - 100 dB 125 °C -40 °C AEC-Q100
BA82903YF-CE2 ROHM, Dual Comparator, 1.3μs 2 → 36 V 8-Pin SOP
  • £ 0.436
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  • RS Stock No. 184-8575
  • Brand ROHM
  • Mfr. Part No. BA82903YF-CE2
ROHM - Surface Mount SOP Single - 2 1.3µs 8 2 → 36 V 5 x 4.4 x 1.5mm 5mm 4.4mm 1.5mm - - - 100 dB 125 °C -40 °C AEC-Q100
BA82903YF-CE2 ROHM, Dual Comparator, 1.3μs 2 → 36 V 8-Pin SOP
  • RS Stock No. 184-8657
  • Brand ROHM
  • Mfr. Part No. BA82903YF-CE2
ROHM - Surface Mount SOP Single - 2 1.3µs 8 2 → 36 V 5 x 4.4 x 1.5mm 5mm 4.4mm 1.5mm - - - 100 dB 125 °C -40 °C AEC-Q100
BA82903YFVM-CTR ROHM, Dual Comparator, 1.3μs 2 → 36 V 8-Pin MSOP
  • £ 0.436
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  • RS Stock No. 184-8576
  • Brand ROHM
  • Mfr. Part No. BA82903YFVM-CTR
ROHM - Surface Mount MSOP Single - 2 1.3µs 8 2 → 36 V 2.9 x 2.8 x 0.75mm 2.9mm 2.8mm 0.75mm - - - 100 dB 125 °C -40 °C AEC-Q100
BA82903YFVM-CTR ROHM, Dual Comparator, 1.3μs 2 → 36 V 8-Pin MSOP
  • RS Stock No. 184-8670
  • Brand ROHM
  • Mfr. Part No. BA82903YFVM-CTR
ROHM - Surface Mount MSOP Single - 2 1.3µs 8 2 → 36 V 2.9 x 2.8 x 0.75mm 2.9mm 2.8mm 0.75mm - - - 100 dB 125 °C -40 °C AEC-Q100
BU7230SG-TR ROHM, Comparator, Open Drain O/P, 1.8 → 5.5 V 5-Pin SSOP
  • £ 0.303
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  • RS Stock No. 184-8584
  • Brand ROHM
  • Mfr. Part No. BU7230SG-TR
ROHM Low Current CMOS Surface Mount SSOP Dual, Single Open Drain 1 - 5 1.8 → 5.5 V 2.9 x 1.6 x 1.1mm 2.9mm 1.6mm 1.1mm 80dB ±0.9 to ±2.75V 80dB 90 dB 105 °C -40 °C -
BU7230SG-TR ROHM, Comparator, Open Drain O/P, 1.8 → 5.5 V 5-Pin SSOP
  • RS Stock No. 184-8643
  • Brand ROHM
  • Mfr. Part No. BU7230SG-TR
ROHM Low Current CMOS Surface Mount SSOP Dual, Single Open Drain 1 - 5 1.8 → 5.5 V 2.9 x 1.6 x 1.1mm 2.9mm 1.6mm 1.1mm 80dB ±0.9 to ±2.75V 80dB 90 dB 105 °C -40 °C -
BU7232YFVM-CTR ROHM, Dual Comparator, Push-Pull O/P, 1.8 → 5.5 V 8-Pin MSOP
  • £ 0.503
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  • RS Stock No. 184-8585
  • Brand ROHM
  • Mfr. Part No. BU7232YFVM-CTR
ROHM Low Current CMOS Surface Mount MSOP Dual, Single Push-Pull 2 - 8 1.8 → 5.5 V 2.9 x 2.8 x 0.75mm 2.9mm 2.8mm 0.75mm 80dB ±0.9 to ±2.75V 80dB 100 dB 125 °C -40 °C AEC-Q100
BU7232YFVM-CTR ROHM, Dual Comparator, Push-Pull O/P, 1.8 → 5.5 V 8-Pin MSOP
  • RS Stock No. 184-8654
  • Brand ROHM
  • Mfr. Part No. BU7232YFVM-CTR
ROHM Low Current CMOS Surface Mount MSOP Dual, Single Push-Pull 2 - 8 1.8 → 5.5 V 2.9 x 2.8 x 0.75mm 2.9mm 2.8mm 0.75mm 80dB ±0.9 to ±2.75V 80dB 100 dB 125 °C -40 °C AEC-Q100
BU7250SG-TR ROHM, Comparator, Open Drain O/P, 1.8 → 5.5 V 5-Pin SSOP
  • £ 0.303
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  • RS Stock No. 184-8589
  • Brand ROHM
  • Mfr. Part No. BU7250SG-TR
ROHM Low Current CMOS Surface Mount SSOP Dual, Single Open Drain 1 - 5 1.8 → 5.5 V 2.9 x 1.6 x 1.1mm 2.9mm 1.6mm 1.1mm 80dB ±0.9 to ±2.75V 80dB 90 dB 105 °C -40 °C -
BU7250SG-TR ROHM, Comparator, Open Drain O/P, 1.8 → 5.5 V 5-Pin SSOP
  • RS Stock No. 184-8700
  • Brand ROHM
  • Mfr. Part No. BU7250SG-TR
ROHM Low Current CMOS Surface Mount SSOP Dual, Single Open Drain 1 - 5 1.8 → 5.5 V 2.9 x 1.6 x 1.1mm 2.9mm 1.6mm 1.1mm 80dB ±0.9 to ±2.75V 80dB 90 dB 105 °C -40 °C -
Dual Comparator, CMOS/TTL O/P, O/P, 1.3μs 2 → 36 V 8-Pin SOIC ON Semiconductor Dual Voltage Comparator Surface Mount SOIC Dual, Single CMOS, DTL, ECL, MOS, TTL 2 1.3µs 8 2 → 36 V 5 x 4 x 1.5mm 5mm 4mm 1.5mm - ±1 to ±18V - 200 V/mV +85 °C -25 °C AEC-Q100
NCS2250SN2T1G ON Semiconductor, Comparator, Rail to Rail O/P, 1.8 → 5.5 V 5-Pin TSOP
  • £ 0.159
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ON Semiconductor 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 - 88dB - +125 °C -40 °C AEC-Q101
NCS2250SN2T1G ON Semiconductor, Comparator, Rail to Rail O/P, 1.8 → 5.5 V 5-Pin TSOP ON Semiconductor 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 - 88dB - +125 °C -40 °C AEC-Q101
NCS2250SQ2T2G ON Semiconductor, Comparator, Rail to Rail O/P, 1.8 → 5.5 V 5-Pin SC-88A
  • £ 0.159
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ON Semiconductor High Speed Surface Mount SC-88A Single Rail to Rail 1 - 5 1.8 → 5.5 V 2.2 x 1.35 x 1mm 2.2mm 1.35mm 1mm 81dB - 88dB - +125 °C -40 °C AEC-Q101
NCS2250SQ2T2G ON Semiconductor, Comparator, Rail to Rail O/P, 1.8 → 5.5 V 5-Pin SC-88A ON Semiconductor High Speed Surface Mount SC-88A Single Rail to Rail 1 - 5 1.8 → 5.5 V 2.2 x 1.35 x 1mm 2.2mm 1.35mm 1mm 81dB - 88dB - +125 °C -40 °C AEC-Q101
NCS2252SN2T1G ON Semiconductor, Comparator, Rail to Rail O/P, 1.8 → 5.5 V 5-Pin TSOP ON Semiconductor 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 - 88dB - +125 °C -40 °C AEC-Q101
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