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 812-4047
製造零件編號TLV3202AIDGK
HK$11.491
/個 (每包:10個)
單位
Low Power Surface Mount MSOP Single Push-Pull 1 2.9ns 8 2.7 → 5.5 V 3.1 x 3.1 x 0.95mm 3.1mm 3.1mm 0.95mm 70dB
RS庫存編號 145-6064
製造零件編號TLV3202AIDGK
HK$9.779
毎管:80 個
單位
Low Power Surface Mount MSOP Single Push-Pull 1 2.9ns 8 2.7 → 5.5 V 3.1 x 3.1 x 0.95mm 3.1mm 3.1mm 0.95mm 70dB
RS庫存編號 761-5864
製造零件編號LM361M/NOPB
HK$20.598
/個 (每包:5個)
單位
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庫存編號 920-6355
製造零件編號LM319DT
HK$2.041
個 (在毎卷:2500)
單位
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庫存編號 528-343
製造零件編號LM393DR
HK$2.722
/個 (每包:25個)
單位
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庫存編號 759-0241
製造零件編號ADCMP604BKSZ-R2
HK$46.09
單位
High Speed Surface Mount SC-70 Single LVDS 1 0.003µs 6 2.5 → 5.5 V 2.2 x 1.35 x 1mm 2.2mm 1.35mm 1mm 50dB
RS庫存編號 145-4483
製造零件編號LM393MX
HK$0.794
個 (在毎卷:3000)
單位
Differential Surface Mount SOIC Dual, Single Open Collector 2 1.4µs 8 2 → 36 V 5 x 4 x 1.5mm 5mm 4mm 1.5mm -
RS庫存編號 100-0752
製造零件編號LM393D
HK$2.018
毎管:75 個
單位
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庫存編號 145-5224
製造零件編號LM311DR2G
HK$1.259
個 (在毎卷:2500)
單位
General Purpose Surface Mount SOIC Dual, Single CMOS 1 200ns 8 36 V 5 x 4 x 1.5mm 5mm 4mm 1.5mm -
RS庫存編號 153-3393
製造零件編號LT1016CN8#PBF
HK$38.162
毎管:50 個
單位
General Purpose Through Hole PDIP Dual, Single Complementary 1 - 8 5 V 10.16 x 6.48 x 3.3mm 10.16mm 6.48mm 3.3mm 96dB
RS庫存編號 545-4799
製造零件編號LT1016CN8#PBF
HK$57.14
單位
General Purpose Through Hole PDIP Dual, Single Complementary 1 - 8 5 V 10.16 x 6.48 x 3.3mm 10.16mm 6.48mm 3.3mm 96dB
RS庫存編號 761-4463
製造零件編號LM393M
HK$2.189
/個 (每包:10個)
單位
General Purpose Surface Mount SOP Dual, Single TTL 2 1.5µs 8 36 V 4.92 x 3.95 x 1.55mm 4.92mm 3.95mm 1.55mm -
RS庫存編號 805-1365
製造零件編號LM311DR2G
HK$2.635
Each (On a Tape of 25)
單位
General Purpose Surface Mount SOIC Dual, Single CMOS 1 200ns 8 36 V 5 x 4 x 1.5mm 5mm 4mm 1.5mm -
RS庫存編號 121-8772
製造零件編號LM393N/NOPB
HK$5.19
毎管:40 個
單位
General Purpose Through Hole MDIP Dual, Single Open Collector 2 1.3µs 8 3 to 28 V 9.27 x 6.35 x 3.3mm 9.27mm 6.35mm 3.3mm -
RS庫存編號 159-8141
製造零件編號ADCMP604BKSZ-R2
HK$39.32
個 (在毎卷:250)
單位
High Speed Surface Mount SC-70 Single LVDS 1 0.003µs 6 2.5 → 5.5 V 2.2 x 1.35 x 1mm 2.2mm 1.35mm 1mm 50dB
RS庫存編號 124-4530
製造零件編號LM393N/NOPB
HK$7.509
/個 (每包:10個)
單位
Dual Voltage Comparator Through Hole PDIP Dual, Single Single Ended 1 1.3µs 8 2 → 36 V 10.16 x 6.6 x 4.57mm 10.16mm 6.6mm 4.57mm -
RS庫存編號 795-8802
製造零件編號LM319DT
HK$5.206
/個 (每包:10個)
單位
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庫存編號 162-6240
製造零件編號LM361M/NOPB
HK$16.703
毎管:55 個
單位
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庫存編號 166-1847
製造零件編號LM393M
HK$1.088
毎管:90 個
單位
Differential Surface Mount SOIC Dual, Single Open Collector 2 1.4µs 8 2 → 36 V 5 x 4 x 1.5mm 5mm 4mm 1.5mm -
RS庫存編號 779-9252
製造零件編號LT1394CS8#PBF
HK$39.865
/個 (每包:2個)
單位
High Speed Surface Mount SOIC Dual, Single CMOS, TTL 1 - 8 5 V 5.004 x 3.89 x 1.498mm 5mm 3.89mm 1.498mm 100dB