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 Stock 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
MIC842NYC5-TR Microchip Technology, Comparator & Voltage Reference, Open Drain O/P, 12μs 5-Pin SC-70 Microchip Technology 3000 Voltage Surface Mount SC-70 Single Open Drain 1 12µs 5 - 1.8 x 1.15 x 0.8mm 1.8mm 1.15mm 0.8mm - - - - +85 °C -40 °C -
MIC842HYC5-TR Microchip Technology, Comparator & Voltage Reference, Push-Pull O/P, 12μs 5-Pin SC-70 Microchip Technology 2980 Voltage Surface Mount SC-70 Single Push-Pull 1 12µs 5 - 1.8 x 1.15 x 0.8mm 1.8mm 1.15mm 0.8mm - - - - +85 °C -40 °C -
MCP6562T-E/MS Microchip Technology, Dual Comparator & Voltage Reference, Push-Pull O/P, 56ns 8-Pin MSOP Microchip Technology 2500 Rail to Rail Surface Mount MSOP Dual Push-Pull 2 56ns 8 - 3 x 3 x 0.95mm 3mm 3mm 0.95mm 66dB - 70dB - +125 °C -40 °C AEC-Q100
MIC842LYC5-TR Microchip Technology, Comparator & Voltage Reference, Push-Pull O/P, 12μs 5-Pin SC-70 Microchip Technology 2500 Voltage Surface Mount SC-70 Single Push-Pull 1 12µs 5 - 1.8 x 1.15 x 0.8mm 1.8mm 1.15mm 0.8mm - - - - +85 °C -40 °C -
MCP6547T-E/MS Microchip Technology, Dual Comparator & Voltage Reference, Open Drain O/P, 4μs 8-Pin MSOP Microchip Technology 2480 Rail to Rail Surface Mount MSOP Single Open Drain 2 4µs 8 - 3 x 3 x 0.95mm 3mm 3mm 0.95mm 70dB - 80dB - +125 °C -40 °C AEC-Q100
MIC6270YM5-TR Microchip Technology, Comparator, Open Collector O/P, 300ns 5-Pin SOT-23 Microchip Technology 2200 CMOS Surface Mount SOT-23 Single Open Collector 1 300ns 5 - 2.9 x 1.6 x 1.1mm 2.9mm 1.6mm 1.1mm - - - 200 V/mV +85 °C -40 °C -
AD8564ARZ Analog Devices, Quad Comparator, 5 V 16-Pin SOIC Analog Devices 0 General Purpose Surface Mount SOIC Dual, Single - 4 - 16 5 V 10 x 4 x 1.5mm 10mm 4mm 1.5mm 85dB ±5V 80dB 69.54 dB +85 °C -40 °C -
ADCMP392ARZ Analog Devices, Dual Comparator, Open Drain O/P, 0.15/1.1μs Rise/Fall, 2.3 → 5.5 V 8-Pin SOIC Analog Devices 0 - Surface Mount SOIC Single Open Drain 2 0.15 (Fall Time) μs, 1.1 (Rise Time) μs 8 2.3 → 5.5 V 5 x 4 x 1.5mm 5mm 4mm 1.5mm 74dB - 80dB 132 dB +125 °C -40 °C -
ADCMP392ARZ Analog Devices, Dual Comparator, Open Drain O/P, 0.15/1.1μs Rise/Fall, 2.3 → 5.5 V 8-Pin SOIC Analog Devices 0 - Surface Mount SOIC Single Open Drain 2 0.15 (Fall Time) μs, 1.1 (Rise Time) μs 8 2.3 → 5.5 V 5 x 4 x 1.5mm 5mm 4mm 1.5mm 74dB - 80dB 132 dB +125 °C -40 °C -
BA10339 ROHM, Quad Comparator, Open Collector O/P, 1.3μs 5 → 28 V 14-Pin PDIP ROHM 0 General Purpose Through Hole PDIP Dual, Single Open Collector 4 1.3µs 14 5 → 28 V 19.4 x 6.5 x 3.44mm 19.4mm 6.5mm 3.44mm - ±12 V, ±15 V, ±3 V, ±5 V, ±9 V - 106 dB +85 °C -40 °C -
BA10339F ROHM, Quad Comparator, Open Collector O/P, 1.3μs 5 → 28 V 14-Pin SOP ROHM 0 General Purpose Surface Mount SOP Dual, Single Open Collector 4 1.3µs 14 5 → 28 V 8.7 x 4.4 x 1.39mm 8.7mm 4.4mm 1.39mm - ±12 V, ±15 V, ±3 V, ±5 V, ±9 V - 106 dB +85 °C -40 °C -
BA10339F-E2 ROHM, Quad Comparator, Open Collector O/P, 1.3μs 3 → 36 V 14-Pin SOP
  • RS Stock No. 177-7731
  • Brand ROHM
  • Mfr. Part No. BA10339F-E2
ROHM 0 General Purpose Surface Mount SOP Dual, Single Open Collector 4 1.3µs 14 3 → 36 V 8.7 x 4.4 x 1.5mm 8.7mm 4.4mm 1.5mm - ±1 to ±18V - 106 dB +85 °C -40 °C -
BA10339FV-E2 ROHM, Quad Comparator, Open Collector O/P, 1.3μs 3 → 36 V 14-Pin SSOP-B
  • RS Stock No. 177-7663
  • Brand ROHM
  • Mfr. Part No. BA10339FV-E2
ROHM 0 General Purpose, Ground Sense Surface Mount SSOP-B Dual, Single Open Collector 4 1.3µs 14 3 → 36 V 5 x 4.4 x 1.15mm 5mm 4.4mm 1.15mm - ±1.5 to ±18V - 106 dB +85 °C -40 °C -
BA10393 ROHM, Dual Comparator, Open Collector O/P, 1.3μs 3 → 28 V 8-Pin PDIP ROHM 0 General Purpose Through Hole PDIP Dual, Single Open Collector 2 1.3µs 8 3 → 28 V 9.3 x 6.5 x 2.59mm 9.3mm 6.5mm 2.59mm - ±12 V, ±15 V, ±3 V, ±5 V, ±9 V - 106 dB +85 °C -40 °C -
BA10393F ROHM, Dual Comparator, Open Collector O/P, 1.3μs 3 → 28 V 8-Pin SOP ROHM 0 General Purpose Surface Mount SOP Dual, Single Open Collector 2 1.3µs 8 3 → 28 V 5 x 4.4 x 1.5mm 5mm 4.4mm 1.5mm - ±12 V, ±15 V, ±3 V, ±5 V, ±9 V - 106 dB +85 °C -40 °C -
BA2903YF-CE2 ROHM, Dual Comparator, Open Collector O/P, 1.3μs +36 V 8-Pin SOP
  • RS Stock No. 177-9876
  • Brand ROHM
  • Mfr. Part No. BA2903YF-CE2
ROHM 0 - Surface Mount SOP Single Open Collector 2 1.3µs 8 +36 V 5 x 4.4 x 1.39mm 5mm 4.4mm 1.39mm - - - 100 dB +125 °C -40 °C AEC-Q100
BA2903YF-CE2 ROHM, Dual Comparator, Open Collector O/P, 1.3μs +36 V 8-Pin SOP
  • RS Stock No. 178-0408
  • Brand ROHM
  • Mfr. Part No. BA2903YF-CE2
ROHM 0 - Surface Mount SOP Single Open Collector 2 1.3µs 8 +36 V 5 x 4.4 x 1.39mm 5mm 4.4mm 1.39mm - - - 100 dB +125 °C -40 °C AEC-Q100
BA2903YFV-CE2 ROHM, Dual Comparator, 1.3μs 2 → 36 V 8-Pin SSOP
  • RS Stock No. 184-8553
  • Brand ROHM
  • Mfr. Part No. BA2903YFV-CE2
ROHM 0 - 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 0 - 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. 184-8574
  • Brand ROHM
  • Mfr. Part No. BA82901YF-CE2
ROHM 0 - 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
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