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.


...
Read more Read less

Filters

Viewing 1 - 20 of 124 products
Results per page
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. 877-2740
Mfr. Part No.LM211DT
SGD0.533
Each (In a Pack of 20)
units
General Purpose Surface Mount SOIC Dual, Single TTL 1 200ns 8 5 V 5 x 4 x 1.65mm 5mm 4mm 1.65mm -
RS Stock No. 170-2065
Mfr. Part No.LM211D
SGD0.147
Each (In a Tube of 75)
units
General Purpose Surface Mount SOIC Dual, Single Open Collector 1 0.2µs 8 9 → 28 V 5 x 4 x 1.25mm 5mm 4mm 1.25mm -
RS Stock No. 178-5191
Mfr. Part No.LM211DT
SGD0.19
Each (On a Reel of 2500)
units
General Purpose Surface Mount SOIC Dual, Single TTL 1 200ns 8 5 V 5 x 4 x 1.65mm 5mm 4mm 1.65mm -
RS Stock No. 714-0830
Mfr. Part No.LM393D
SGD0.179
Each (In a Pack of 20)
units
General Purpose 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 -
RS Stock No. 714-0833
Mfr. Part No.LM393DT
SGD0.477
Each (In a Pack of 20)
units
General Purpose Surface Mount SOIC Dual, Single Open Collector 2 1.3µs 8 3 V, 5 V, 9 V, 12 V, 15 V, 18 V, 24 V, 28 V 4.9 x 3.9 x 1.25mm 4.9mm 3.9mm 1.25mm -
RS Stock No. 714-0811
Mfr. Part No.LM339D
SGD3.486
Each (In a Pack of 20)
units
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 -
RS Stock No. 178-5167
Mfr. Part No.LM393DT
SGD0.135
Each (On a Reel of 2500)
units
General Purpose Surface Mount SOIC Dual, Single Open Collector 2 1.3µs 8 3 V, 5 V, 9 V, 12 V, 15 V, 18 V, 24 V, 28 V 4.9 x 3.9 x 1.25mm 4.9mm 3.9mm 1.25mm -
RS Stock No. 165-7717
Mfr. Part No.LM339DT
SGD0.129
Each (On a Reel of 2500)
units
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 -
RS Stock No. 714-0815
Mfr. Part No.LM339DT
SGD0.427
Each (In a Pack of 20)
units
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 -
RS Stock No. 145-9204
Mfr. Part No.LM339D
SGD0.127
Each (In a Tube of 50)
units
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 -
RS Stock No. 795-6896
Mfr. Part No.LM239ADT
SGD0.697
Each (In a Pack of 10)
units
General Purpose Surface Mount SOIC Dual, Single CMOS, DTL, ECL, MOS, TTL 4 1.3µs 14 2 → 36 V 8.75 x 4 x 1.65mm 8.75mm 4mm 1.65mm -
RS Stock No. 168-7143
Mfr. Part No.LM239ADT
SGD0.261
Each (On a Reel of 2500)
units
General Purpose Surface Mount SOIC Dual, Single CMOS, DTL, ECL, MOS, TTL 4 1.3µs 14 2 → 36 V 8.75 x 4 x 1.65mm 8.75mm 4mm 1.65mm -
RS Stock No. 426-118
Mfr. Part No.TS3021ICT
SGD1.75
Each (In a Pack of 5)
units
General Purpose Surface Mount SC-70 Single Push-Pull 1 0.04µs 5 3 V 2.2 x 1.35 x 1mm 2.2mm 1.35mm 1mm 79dB
RS Stock No. 168-5801
Mfr. Part No.TS3021ICT
SGD1.406
Each (On a Reel of 3000)
units
General Purpose Surface Mount SC-70 Single Push-Pull 1 0.04µs 5 3 V 2.2 x 1.35 x 1mm 2.2mm 1.35mm 1mm 79dB
RS Stock No. 920-6355
Mfr. Part No.LM319DT
SGD0.401
Each (On a Reel of 2500)
units
High Speed Surface Mount SOIC Single TTL 2 80ns 14 5 → ±15 V 8.75 x 4 x 1.65mm 8.75mm 4mm 1.65mm -
RS Stock No. 795-8802
Mfr. Part No.LM319DT
SGD0.751
Each (In a Pack of 10)
units
High Speed Surface Mount SOIC Single TTL 2 80ns 14 5 → ±15 V 8.75 x 4 x 1.65mm 8.75mm 4mm 1.65mm -
RS Stock No. 189-1889
Mfr. Part No.TS864IPT
SGD1,417.47
1 Reel of 2500
Reel(s)
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
RS Stock No. 189-1962
Mfr. Part No.LM293QT
SGD0.544
Each (In a Pack of 25)
units
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 -
RS Stock No. 189-1890
Mfr. Part No.TS881ICT
SGD2,637.72
1 Reel of 3000
Reel(s)
- Surface Mount SC-70 Single Push-Pull 1 - 5 1.1 → 5.5 V 2.2 x 1.35 x 1mm 2.2mm 1.35mm 1mm 78dB
RS Stock No. 168-7728
Mfr. Part No.TS3702IDT
SGD0.371
Each (On a Reel of 2500)
units
Low Power Surface Mount SOIC Dual, Single CMOS, Push-Pull 2 2µs 8 2.7 → 16 V 5 x 4 x 1.65mm 5mm 4mm 1.65mm 82dB