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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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庫存編號 155-9380
製造零件編號LT6700IS6-1#TRMPBF
HK$21.566
個 (在毎卷:500)
單位
Low Voltage Surface Mount TSOT-23 Single Open Collector - - 6 18.5 V 2.9 x 1.75 x 0.9mm 2.9mm 1.75mm 0.9mm -
RS庫存編號 155-7514
製造零件編號LT6700IS6-3#TRMPBF
HK$21.566
個 (在毎卷:500)
單位
Low Voltage Surface Mount TSOT-23 Single Open Collector 2 2.2µs 6 1.4 → 18 V 2.9 x 1.5 x 0.9mm 2.9mm 1.5mm 0.9mm -
RS庫存編號 823-0206
製造零件編號LT6703CDC-2#TRMPBF
HK$16.244
/個 (每包:5個)
單位
Low Voltage Surface Mount DFN Single Open Collector 1 2.2µs 3 1.4 → 18 V 2 x 2 x 0.7mm 2mm 2mm 0.7mm -
RS庫存編號 761-8908
製造零件編號LT6703HVIS5-3#TRMPBF
HK$20.63
單位
Low Voltage Surface Mount TSOT-23 Single Open Collector 1 - 5 1.4 → 18 V 2.9 x 1.75 x 0.9mm 2.9mm 1.75mm 0.9mm -
RS庫存編號 761-9077
製造零件編號LTC1540IS8#PBF
HK$38.27
單位
Low Power Surface Mount SOIC Dual, Single CMOS, TTL 1 - 8 2 to 11 V 5.004 x 3.988 x 1.498mm 5mm 3.988mm 1.498mm 0.1mV/V
RS庫存編號 151-3100
製造零件編號LTC6752ISC6-1#TRMPBF
HK$22.57
個 (在毎卷:500)
單位
High Speed Surface Mount SC-70 Single CMOS 1 - 6 Maximum of 3.5 V 2.2 x 1.35 x 1mm 2.2mm 1.35mm 1mm 70dB
RS庫存編號 545-7142
製造零件編號LTC1441CS8#PBF
HK$28.98
單位
Low Power Surface Mount SOIC Dual, Single - 2 - 8 3 → 9 V 5 x 3.99 x 1.5mm 5mm 3.99mm 1.5mm 80dB
RS庫存編號 545-7136
製造零件編號LTC1440CS8#PBF
HK$28.67
單位
Low Power Surface Mount SOIC Dual, Single - 1 - 8 3 → 9 V 5 x 3.99 x 1.5mm 5mm 3.99mm 1.5mm 80dB
RS庫存編號 155-7510
製造零件編號LTC1540IDD#PBF
HK$29.801
毎管:121 個
單位
Low Power Surface Mount DFN Single CMOS, TTL 1 - 8 2 → 11 V 3 x 3 x 0.7mm 3mm 3mm 0.7mm 0.1mV/V
RS庫存編號 145-6989
製造零件編號LTC1540CMS8#PBF
HK$23.459
毎管:50 個
單位
Low Power Surface Mount MSOP Dual, Single CMOS, TTL 1 - 8 2 → 11 V 3 x 3 x 0.86mm 3mm 3mm 0.86mm 0.1mV/V
RS庫存編號 177-7246
製造零件編號LTC1440CS8#PBF
HK$33.991
毎管:100 個
單位
Low Power Surface Mount SOIC Dual, Single - 1 - 8 3 → 9 V 5 x 3.99 x 1.5mm 5mm 3.99mm 1.5mm 80dB
RS庫存編號 919-9364
製造零件編號LT6703HVIS5-3#TRMPBF
HK$13.157
個 (在毎卷:500)
單位
Low Voltage Surface Mount TSOT-23 Single Open Collector 1 - 5 1.4 → 18 V 2.9 x 1.75 x 0.9mm 2.9mm 1.75mm 0.9mm -
RS庫存編號 761-9014
製造零件編號LTC1440IS8#PBF
HK$32.15
單位
Low Power Surface Mount SOIC Dual, Single CMOS, TTL 1 - 8 2 to 11 V 5.004 x 3.988 x 1.498mm 5mm 3.988mm 1.498mm 0.1mV/V
RS庫存編號 919-9890
製造零件編號LT6700CS6-1#TRMPBF
HK$17.277
個 (在毎卷:500)
單位
General Purpose Surface Mount TSOT-23 Single Open Collector 2 24µs 6 1.4 → 18 V 2.9 x 1.75 x 0.9mm 2.9mm 1.75mm 0.9mm -
RS庫存編號 145-7036
製造零件編號LTC1042CN8#PBF
HK$23.406
毎管:50 個
單位
General Purpose Through Hole PDIP Single TTL - 80µs 8 18 V 10.16 x 6.47 x 3.3mm 10.16mm 6.47mm 3.3mm -
RS庫存編號 178-5393
製造零件編號LTC1442IS8#PBF
HK$42.908
毎管:100 個
單位
General Purpose Surface Mount SOIC Dual, Single CMOS, TTL 2 - 8 2 → 11 V 5 x 4 x 1.5mm 5mm 4mm 1.5mm 0.1mV/V
RS庫存編號 761-9061
製造零件編號LTC1540CMS8#PBF
HK$39.19
單位
Low Power Surface Mount MSOP Dual, Single CMOS, TTL 1 - 8 2 → 11 V 3 x 3 x 0.86mm 3mm 3mm 0.86mm 0.1mV/V
RS庫存編號 761-9064
製造零件編號LTC1540CS8#PBF
HK$33.07
單位
Low Power Surface Mount SOIC Dual, Single CMOS, TTL 1 - 8 2 to 11 V 5.004 x 3.988 x 1.498mm 5mm 3.988mm 1.498mm 0.1mV/V
RS庫存編號 786-9730
製造零件編號LT6700CS6-1#TRMPBF
HK$25.77
/個 (每包:2個)
單位
General Purpose Surface Mount TSOT-23 Single Open Collector 2 24µs 6 1.4 → 18 V 2.9 x 1.75 x 0.9mm 2.9mm 1.75mm 0.9mm -
RS庫存編號 822-5929
製造零件編號LTC1540IDD#PBF
HK$35.03
/個 (每包:2個)
單位
Low Power Surface Mount DFN Single CMOS, TTL 1 - 8 2 → 11 V 3 x 3 x 0.7mm 3mm 3mm 0.7mm 0.1mV/V