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 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 761-5864
Tillv. art.nrLM361M/NOPB
VarumärkeTexas Instruments
26,14 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 162-6240
Tillv. art.nrLM361M/NOPB
VarumärkeTexas Instruments
21,953 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 866-0231
Tillv. art.nrLM393P
VarumärkeTexas Instruments
3,064 kr
Each (In a Tube of 50)
Enheter
General Purpose Through Hole PDIP Dual, Single CMOS, MOS, Open Collector, TTL 2 1.3µs 8 2 → 36 V 10.16 x 6.6 x 4.57mm 10.16mm 6.6mm 4.57mm -
RS-artikelnummer 810-239
Tillv. art.nrLM393P
VarumärkeTexas Instruments
3,93 kr
Each
Enheter
General Purpose 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 162-5392
Tillv. art.nrLMV331IDBVR
VarumärkeTexas Instruments
2,481 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 900-9879
Tillv. art.nrTLV1701AIDBVT
VarumärkeTexas Instruments
11,994 kr
Each (In a Pack of 5)
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 145-0192
Tillv. art.nrLM293P
VarumärkeTexas Instruments
3,009 kr
Each (In a Tube of 50)
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 121-8421
Tillv. art.nrLM339N
VarumärkeTexas Instruments
3,276 kr
Each (In a Tube of 25)
Enheter
General Purpose Through Hole PDIP Dual, Single Open Collector 4 1.3µs 14 3 → 28 V 19.3 x 6.35 x 4.57mm 19.3mm 6.35mm 4.57mm -
RS-artikelnummer 517-1832
Tillv. art.nrLM239N
VarumärkeTexas Instruments
3,195 kr
Each (In a Pack of 20)
Enheter
Differential Through Hole PDIP Dual, Single Open Collector 4 1.3µs 14 3 → 28 V 19.3 x 6.35 x 4.57mm 19.3mm 6.35mm 4.57mm -
RS-artikelnummer 178-8867
Tillv. art.nrLM392M/NOPB
VarumärkeTexas Instruments
13,918 kr
Each (In a Tube of 95)
Enheter
Low Power Surface Mount SOIC - - - - 8 - 4.9 x 3.9 x 1.45mm 4.9mm 3.9mm 1.45mm -
RS-artikelnummer 168-4869
Tillv. art.nrLM2901DR
VarumärkeTexas Instruments
0,876 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 517-2368
Tillv. art.nrLM2901D
VarumärkeTexas Instruments
3,661 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 100-0752
Tillv. art.nrLM393D
VarumärkeTexas Instruments
2,855 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 536-1344
Tillv. art.nrLM339M/NOPB
VarumärkeTexas Instruments
13,24 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 121-8704
Tillv. art.nrLM339N/NOPB
VarumärkeTexas Instruments
7,83 kr
Each (In a Tube of 25)
Enheter
General Purpose Through Hole MDIP Dual, Single Open Collector 4 1.3µs 14 3 to 28 V 19.05 x 6.35 x 3.3mm 19.05mm 6.35mm 3.3mm -
RS-artikelnummer 536-1388
Tillv. art.nrLM393M/NOPB
VarumärkeTexas Instruments
10,75 kr
Each
Enheter
General Purpose Surface Mount SOIC Dual, Single Open Collector 2 1.3µs 8 3 → 28 V 4.9 x 3.9 x 1.45mm 4.9mm 3.9mm 1.45mm -
RS-artikelnummer 145-0107
Tillv. art.nrLM239N
VarumärkeTexas Instruments
3,30 kr
Each (In a Tube of 25)
Enheter
Differential Through Hole PDIP Dual, Single Open Collector 4 1.3µs 14 3 → 28 V 19.3 x 6.35 x 4.57mm 19.3mm 6.35mm 4.57mm -
RS-artikelnummer 858-433
Tillv. art.nrLM393D
VarumärkeTexas Instruments
3,93 kr
Each
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 527-198
Tillv. art.nrLM339N
VarumärkeTexas Instruments
3,933 kr
Each (In a Pack of 25)
Enheter
General Purpose Through Hole PDIP Dual, Single Open Collector 4 1.3µs 14 3 → 28 V 19.3 x 6.35 x 4.57mm 19.3mm 6.35mm 4.57mm -