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.


...
Voir plus Voir moins

Filtres

Afficher 61 - 80 des 928 produits
Nombre de résultats par page
Description Prix 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
N° de stock RS 145-7092
Référence fabricantLM139J
10,733 €
Each (In a Tube of 25)
Unité
Differential Through Hole CDIP Dual, Single Open Collector 4 1.3µs 14 3 → 28 V 19.56 x 6.92 x 4.57mm 19.56mm 6.92mm 4.57mm -
N° de stock RS 751-2991
Référence fabricantAP331AWRG-7
MarqueDiodesZetex
0,25 €
Each (In a Pack of 50)
Unité
General Purpose Surface Mount SOT-25R Dual, Single Open Collector 1 1.3µs 5 2 → 36 V 3.1 x 1.7 x 1.3mm 3.1mm 1.7mm 1.3mm -
N° de stock RS 759-2727
Référence fabricantADCMP601BKSZ-R2
5,00 €
Each
Unité
High Speed Surface Mount SC-70 Single CMOS, TTL 1 0.005µs 6 2.5 → 5.5 V 2.2 x 1.35 x 1mm 2.2mm 1.35mm 1mm 50dB
N° de stock RS 178-5160
Référence fabricantLM2903DT
0,077 €
Each (On a Reel of 2500)
Unité
General Purpose Surface Mount SOIC Dual, Single CMOS, DL, ECL, MOS, TTL 2 1.3µs 8 2 → 36 V 5 x 4 x 1.25mm 5mm 4mm 1.25mm -
N° de stock RS 145-5224
Référence fabricantLM311DR2G
0,113 €
Each (On a Reel of 2500)
Unité
General Purpose Surface Mount SOIC Dual, Single CMOS 1 200ns 8 36 V 5 x 4 x 1.5mm 5mm 4mm 1.5mm -
N° de stock RS 121-9350
Référence fabricantTPS3700DDCT
1,039 €
Each (On a Reel of 250)
Unité
- Surface Mount TSOT-23 - - - - 6 - 3.05 x 1.75 x 1mm 3.05mm 1.75mm 1mm -
N° de stock RS 162-5376
Référence fabricantLM2903DGKR
0,105 €
Each (On a Reel of 2500)
Unité
Differential Surface Mount MSOP Dual, Single Open Collector 2 1.3µs 8 3 → 28 V 3 x 3 x 0.97mm 3mm 3mm 0.97mm -
N° de stock RS 168-8801
Référence fabricantTS881ILT
0,462 €
Each (On a Reel of 3000)
Unité
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
N° de stock RS 121-8870
Référence fabricantLM339M/NOPB
0,973 €
Each (In a Tube of 55)
Unité
General Purpose Surface Mount SOIC Dual, Single Open Collector 4 1.3µs 14 3 to 28 V 8.64 x 3.91 x 1.45mm 8.64mm 3.91mm 1.45mm -
N° de stock RS 169-5575
Référence fabricantLM311PW
0,274 €
Each (In a Tube of 150)
Unité
General Purpose Surface Mount TSSOP Dual, Single Open Collector/Emitter 1 0.165µs 8 5 → 28 V 3 x 4.4 x 1.15mm 3mm 4.4mm 1.15mm -
N° de stock RS 534-4260
Référence fabricantLMC7211BIM5/NOPB
1,54 €
Each
Unité
General Purpose Surface Mount SOT-23 Single Push-Pull 1 4µs 5 3 → 12 V 2.92 x 1.6 x 1.02mm 2.92mm 1.6mm 1.02mm 75dB
N° de stock RS 661-2589
Référence fabricantLM2903DGKR
0,295 €
Each (In a Pack of 10)
Unité
Differential Surface Mount MSOP Dual, Single Open Collector 2 1.3µs 8 3 → 28 V 3 x 3 x 0.97mm 3mm 3mm 0.97mm -
N° de stock RS 178-5167
Référence fabricantLM393DT
0,072 €
Each (On a Reel of 2500)
Unité
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 -
N° de stock RS 436-8417
Référence fabricantLM139J
10,66 €
Each
Unité
Differential Through Hole CDIP Dual, Single Open Collector 4 1.3µs 14 3 → 28 V 19.56 x 6.92 x 4.57mm 19.56mm 6.92mm 4.57mm -
N° de stock RS 912-9863
Référence fabricantADCMP601BKSZ-R2
3,114 €
Each (On a Reel of 250)
Unité
High Speed Surface Mount SC-70 Single CMOS, TTL 1 0.005µs 6 2.5 → 5.5 V 2.2 x 1.35 x 1mm 2.2mm 1.35mm 1mm 50dB
N° de stock RS 714-0754
Référence fabricantLM2903DT
0,229 €
Each (In a Pack of 20)
Unité
General Purpose Surface Mount SOIC Dual, Single CMOS, DL, ECL, MOS, TTL 2 1.3µs 8 2 → 36 V 5 x 4 x 1.25mm 5mm 4mm 1.25mm -
N° de stock RS 880-5336
Référence fabricantLM219DT
0,666 €
Each (In a Pack of 10)
Unité
General Purpose Surface Mount SOIC Single Open Collector, TTL 2 80ns 14 ±5 → ±15 V 8.75 x 4 x 1.65mm 8.75mm 4mm 1.65mm -
N° de stock RS 759-1219
Référence fabricantAD790AQ
17,55 €
Each
Unité
High Speed Through Hole CDIP Dual, Single CMOS, TTL 1 0.04 → 0.045µs 8 5 V 10.29 x 7.67 x 3.56mm 10.29mm 7.67mm 3.56mm 95dB
N° de stock RS 171-6247
Référence fabricantBU5265HFV-TR
MarqueROHM
0,446 €
Each (In a Pack of 25)
Unité
Push-Pull Output Surface Mount HVSOF Dual, Single Push-Pull 1 0.5µs 5 1.8 → 5.5 V 1.6 x 1.2 x 0.58mm 1.6mm 1.2mm 0.58mm 80dB
N° de stock RS 145-4757
Référence fabricantLM393DMR2G
0,077 €
Each (On a Reel of 4000)
Unité
General Purpose Surface Mount MSOP Dual, Single CMOS, DTL, ECL, MOS, TTL 2 1.5µs 8 2 → 36 V dc 3.1 x 3.1 x 0.95mm 3.1mm 3.1mm 0.95mm -