Isolation Amplifiers

Isolation Amplifiers are instruments that have been designed to measure the smallest current and voltage signals in the presence of high common mode voltage by providing electrical safety barrier and electrical isolation. They are differential amplifiers that protect data acquisition components from common mode voltages, which are potential differences between instrument ground and signal ground.

How to select a correct isolation amplifier?
There are two main types of isolation amplifiers and the decision of using one or another may depend on several aspects and user needs:

• Single-ended, floating common - an isolated and quasi-balanced input (the floating common is typically connected to the (-) input of differential amplifier). Suitable for off-ground measurements up to breakdown voltage of the isolation barrier, and exhibits very good common mode rejection (100 dB typical).

• Differential, floating common - an isolated and balanced input. Suitable for off-ground measurements of the breakdown voltage of the isolation barrier, and exhibits superb common mode rejection (>120 dB).

What is typical application of isolation amplifiers?
Isolation amplifiers are commonly used in test and measurement or medical devices. Also, they are popular in solar and fuel cells construction to profile the performance of individual series-connected voltage cells.

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Description Price Power Supply Type Typical Dual Supply Voltage Typical Single Supply Voltage Isolation Mode Rejection Rail to Rail Number of Channels per Chip Maximum Voltage Gain Mounting Type Package Type Pin Count Dimensions Height Width Length
RS庫存編號 461-8267
製造零件編號ISO122JP
HK$254.22
單位
Dual ±12 V, ±15 V, ±5 V, ±9 V - - - 1 0dB Through Hole PDIP 8 3.94 x 20.01 x 6.61mm 3.94mm 6.61mm 20.01mm
RS庫存編號 121-8550
製造零件編號ISO122JP
HK$220.762
毎管:25 個
單位
- - - - - - - - - - - - - -
RS庫存編號 866-0215
製造零件編號ISO124P
HK$184.847
毎管:25 個
單位
Dual ±4.5 → ±18V - 140dB - 1 - Through Hole PDIP 8 21.34 x 7.11 x 4.95mm 4.95mm 7.11mm 21.34mm
RS庫存編號 300-8243
製造零件編號ISO124P
HK$194.52
單位
Dual ±12 V, ±15 V, ±5 V, ±9 V - - - 1 0dB Through Hole PDIP 8 3.94 x 20.01 x 6.61mm 3.94mm 6.61mm 20.01mm
RS庫存編號 817-5786
製造零件編號AMC1100DUB
HK$51.76
單位
Dual 5V - 108dB - 1 - Surface Mount SOP 8 9.55 x 6.67 x 3.35mm 3.35mm 6.67mm 9.55mm
RS庫存編號 288-777
製造零件編號ISO122U
HK$312.76
單位
Dual ±12 V, ±15 V, ±5 V, ±9 V - - - 1 0dB Surface Mount SOIC 28 2.3 x 17.9 x 7.5mm 2.3mm 7.5mm 17.9mm
RS庫存編號 817-5789
製造零件編號AMC1200SDUB
HK$53.20
單位
Dual 5V - - - 1 8 Surface Mount SOP 8 9.55 x 6.67 x 3.35mm 3.35mm 6.67mm 9.55mm
RS庫存編號 923-6740
製造零件編號ISO122JU
HK$238.728
毎管:20 個
單位
Dual ±12 V, ±15 V, ±5 V, ±9 V - - - 1 0dB Surface Mount SOP 8 2.3 x 17.9 x 7.5mm 2.3mm 7.5mm 17.9mm
RS庫存編號 825-3164
製造零件編號AMC1200SDUBR
HK$44.205
/個 (每包:2個)
單位
Single - 5 V 108dB - 1 8dB Surface Mount SOP 8 9.55 x 6.67 x 3.35mm 3.35mm 6.67mm 9.55mm
RS庫存編號 121-9701
製造零件編號AMC1100DUB
HK$42.861
毎管:50 個
單位
Dual 5V - 108dB - 1 - Surface Mount SOP 8 9.55 x 6.67 x 3.35mm 3.35mm 6.67mm 9.55mm
RS庫存編號 921-3000
製造零件編號AMC1200SDUBR
HK$30.912
個 (在毎卷:350)
單位
Single - 5 V 108dB - 1 8dB Surface Mount SOP 8 9.55 x 6.67 x 3.35mm 3.35mm 6.67mm 9.55mm
RS庫存編號 121-9702
製造零件編號AMC1200SDUB
HK$44.93
毎管:50 個
單位
Dual 5V - - - 1 8 Surface Mount SOP 8 9.55 x 6.67 x 3.35mm 3.35mm 6.67mm 9.55mm
RS庫存編號 197-7180
製造零件編號ISO122P
HK$311.09
單位
Single ±15V - 140dB - - - - PDIP 8 - - - -
RS庫存編號 300-8259
製造零件編號ISO124U
HK$206.94
單位
Dual ±12 V, ±15 V, ±5 V, ±9 V - - - 1 0dB Surface Mount SOP 8 2.3 x 17.9 x 7.5mm 2.3mm 7.5mm 17.9mm
RS庫存編號 121-8514
製造零件編號ISO124U
HK$198.961
毎管:20 個
單位
- - - - - - - - - - - - - -
RS庫存編號 197-7179
製造零件編號ISO122P
HK$268.286
毎管:25 個
單位
Single ±15V - 140dB - - - - PDIP 8 - - - -
RS庫存編號 709-2324
製造零件編號ISO122JU
HK$258.76
單位
Dual ±12 V, ±15 V, ±5 V, ±9 V - - - 1 0dB Surface Mount SOP 8 2.3 x 17.9 x 7.5mm 2.3mm 7.5mm 17.9mm
RS庫存編號 121-8271
製造零件編號ISO122U
HK$288.414
毎管:20 個
單位
Dual ±12 V, ±15 V, ±5 V, ±9 V - - - 1 0dB Surface Mount SOIC 28 2.3 x 17.9 x 7.5mm 2.3mm 7.5mm 17.9mm