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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Beskrivning Pris 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-artikelnummer 356-9754
Tillv. art.nrTLC374ID
VarumärkeTexas Instruments
13,75 kr
Each
Enheter
General Purpose Surface Mount SOIC Dual, Single Open Drain 4 0.65µs 14 5 → 15 V 8.65 x 3.91 x 1.58mm 8.65mm 3.91mm 1.58mm -
RS-artikelnummer 162-6240
Tillv. art.nrLM361M/NOPB
VarumärkeTexas Instruments
20,398 kr
Each (In a Tube of 55)
Enheter
High Speed Surface Mount SOIC Dual TTL 2 0.02µs 14 - 8.738 x 3.988 x 1.499mm 8.74mm 3.99mm 1.5mm -
RS-artikelnummer 661-2615
Tillv. art.nrLMV331IDBVR
VarumärkeTexas Instruments
5,015 kr
Each (In a Pack of 10)
Enheter
General Purpose Surface Mount SOT-23 Single Open Collector 1 - 5 3 V, 5 V 2.9 x 1.6 x 1.15mm 2.9mm 1.6mm 1.15mm -
RS-artikelnummer 162-5392
Tillv. art.nrLMV331IDBVR
VarumärkeTexas Instruments
2,229 kr
Each (On a Reel of 3000)
Enheter
General Purpose Surface Mount SOT-23 Single Open Collector 1 - 5 3 V, 5 V 2.9 x 1.6 x 1.15mm 2.9mm 1.6mm 1.15mm -
RS-artikelnummer 162-4363
Tillv. art.nrTLC374ID
VarumärkeTexas Instruments
11,711 kr
Each (In a Tube of 50)
Enheter
General Purpose Surface Mount SOIC Dual, Single Open Drain 4 0.65µs 14 5 → 15 V 8.65 x 3.91 x 1.58mm 8.65mm 3.91mm 1.58mm -
RS-artikelnummer 761-5864
Tillv. art.nrLM361M/NOPB
VarumärkeTexas Instruments
24,072 kr
Each (In a Pack of 5)
Enheter
High Speed Surface Mount SOIC Dual TTL 2 0.02µs 14 - 8.738 x 3.988 x 1.499mm 8.74mm 3.99mm 1.5mm -
RS-artikelnummer 536-1344
Tillv. art.nrLM339M/NOPB
VarumärkeTexas Instruments
11,58 kr
Each
Enheter
General Purpose Surface Mount SOIC Dual, Single Open Collector 4 1.3µs 14 3 → 28 V 8.64 x 3.91 x 1.45mm 8.64mm 3.91mm 1.45mm -
RS-artikelnummer 528-365
Tillv. art.nrLM2901DR
VarumärkeTexas Instruments
2,676 kr
Each (In a Pack of 25)
Enheter
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 -
RS-artikelnummer 812-0449
Tillv. art.nrTPS3700DDCT
VarumärkeTexas Instruments
16,544 kr
Each (In a Pack of 10)
Enheter
Window Surface Mount TSOT-23 Single Open Drain 2 2.2µs 6 1.8 → 18 V 3.05 x 1.75 x 1mm 3.05mm 1.75mm 1mm -
RS-artikelnummer 121-9350
Tillv. art.nrTPS3700DDCT
VarumärkeTexas Instruments
12,53 kr
Each (On a Reel of 250)
Enheter
- Surface Mount TSOT-23 - - - - 6 - 3.05 x 1.75 x 1mm 3.05mm 1.75mm 1mm -
RS-artikelnummer 517-2368
Tillv. art.nrLM2901D
VarumärkeTexas Instruments
3,149 kr
Each (In a Pack of 20)
Enheter
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 -
RS-artikelnummer 121-8870
Tillv. art.nrLM339M/NOPB
VarumärkeTexas Instruments
7,659 kr
Each (In a Tube of 55)
Enheter
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 -
RS-artikelnummer 100-0752
Tillv. art.nrLM393D
VarumärkeTexas Instruments
2,76 kr
Each (In a Tube of 75)
Enheter
General Purpose Surface Mount SOIC Dual, Single Open Collector 2 1.3µs 8 3 → 28 V 4.9 x 3.91 x 1.58mm 4.9mm 3.91mm 1.58mm -
RS-artikelnummer 168-4869
Tillv. art.nrLM2901DR
VarumärkeTexas Instruments
0,912 kr
Each (On a Reel of 2500)
Enheter
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 -
RS-artikelnummer 145-7305
Tillv. art.nrLM2901D
VarumärkeTexas Instruments
3,207 kr
Each (In a Tube of 50)
Enheter
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 -
RS-artikelnummer 528-343
Tillv. art.nrLM393DR
VarumärkeTexas Instruments
2,345 kr
Each (In a Pack of 25)
Enheter
General Purpose Surface Mount SOIC Dual, Single Open Collector 2 1.3µs 8 3 → 28 V 4.9 x 3.91 x 1.58mm 4.9mm 3.91mm 1.58mm -
RS-artikelnummer 709-2028
Tillv. art.nrLM293P
VarumärkeTexas Instruments
2,885 kr
Each (In a Pack of 20)
Enheter
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 -
RS-artikelnummer 527-738
Tillv. art.nrLM293DR
VarumärkeTexas Instruments
2,85 kr
Each (In a Pack of 25)
Enheter
Differential Surface Mount SOIC Dual, Single Open Collector 2 1.3µs 8 3 → 28 V 4.9 x 3.91 x 1.58mm 4.9mm 3.91mm 1.58mm -
RS-artikelnummer 162-9865
Tillv. art.nrTLV1701AIDBVT
VarumärkeTexas Instruments
7,58 kr
Each (On a Reel of 250)
Enheter
Low Power Surface Mount SOT-23 Dual, Single Open Collector 1 - 5 2.2 → 36 V 3.05 x 1.75 x 1.3mm 3.05mm 1.75mm 1.3mm -
RS-artikelnummer 179-1593
Tillv. art.nrLP339M/NOPB
VarumärkeTexas Instruments
11,491 kr
Each (In a Tube of 55)
Enheter
General Purpose Surface Mount SOIC Dual, Single Open Collector 4 8µs 14 3 → 28 V 8.64 x 3.91 x 1.45mm 8.64mm 3.91mm 1.45mm -