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 830-4987
製造零件編號ACPL-C87AT-000E
BrandBroadcom
HK$77.39
單位
Single - 3 → 5.5 V - - 1 1.01V/V Surface Mount SOIC 8 5.85 x 6.807 x 3.18mm 3.18mm 6.807mm 5.85mm
RS庫存編號 178-3213
製造零件編號ACPL-C87AT-000E
BrandBroadcom
HK$71.969
毎管:80 個
單位
Single - 3 → 5.5 V - - 1 1.01V/V Surface Mount SOIC 8 5.85 x 6.807 x 3.18mm 3.18mm 6.807mm 5.85mm
RS庫存編號 168-9952
製造零件編號SI8261ACA-C-IS
HK$8.745
毎管:96 個
單位
Single - 5 → 30 V - Rail to Rail Output 1 - Surface Mount SOIC 8 5 x 4 x 1.55mm 1.55mm 5mm 5mm
RS庫存編號 795-1453
製造零件編號Si8261ACA-C-IS
HK$9.272
/個 (每包:10個)
單位
Single - 5 → 30 V - Rail to Rail Output 1 - Surface Mount SOIC 8 5 x 4 x 1.55mm 1.55mm 5mm 5mm
RS庫存編號 914-0090
製造零件編號AD215BY
HK$914.47
單位
Dual ±15V - 120dB - 1 - Through Hole SIP 12 63 x 8.3 x 21.4mm 21.4mm 8.3mm 63mm
RS庫存編號 160-3298
製造零件編號AD215BY
HK$859.776
毎管:8 個
單位
Dual ±15V - 120dB - 1 - Through Hole SIP 12 63 x 8.3 x 21.4mm 21.4mm 8.3mm 63mm
RS庫存編號 922-6769
製造零件編號ACPL-C87B-000E
BrandBroadcom
HK$41.297
毎管:80 個
單位
Single - 4.5 → 5.5 V -78dB - 1 1.005V/V Surface Mount SSOP 8 5.85 x 6.807 x 3.18mm 3.18mm 6.807mm 5.85mm
RS庫存編號 369-5774
製造零件編號AD202JY
HK$481.937
毎管:9 個
單位
Single - 15 V 130dB - 1 40dB Through Hole SIP 11 15.9 x 52.8 x 6.6mm 15.9mm 6.6mm 52.8mm
RS庫存編號 768-7907
製造零件編號ACPL-C87B-000E
BrandBroadcom
HK$67.94
單位
Single - 4.5 → 5.5 V -78dB - 1 1.005V/V Surface Mount SSOP 8 5.85 x 6.807 x 3.18mm 3.18mm 6.807mm 5.85mm
RS庫存編號 231-5196
製造零件編號AD215AY
HK$780.20
單位
Dual ±15V - - - 1 20dB Through Hole SIP 12 21.4 x 63 x 8.3mm 21.4mm 8.3mm 63mm
RS庫存編號 178-3172
製造零件編號ACPL-790B-000E
BrandBroadcom
HK$49.43
毎管:50 個
單位
Single - 3 → 5.5 V - - 1 8.24V/V Through Hole PDIP 8 9.8 x 6.35 x 3.56mm 3.56mm 6.35mm 9.8mm
RS庫存編號 734-4984
製造零件編號ACPL-790B-000E
BrandBroadcom
HK$42.94
單位
Single - 3 → 5.5 V - - 1 8.24V/V Through Hole PDIP 8 9.8 x 6.35 x 3.56mm 3.56mm 6.35mm 9.8mm
RS庫存編號 106-7017
製造零件編號AD215AY
HK$710.539
毎管:8 個
單位
Dual ±15V - - - 1 20dB Through Hole SIP 12 21.4 x 63 x 8.3mm 21.4mm 8.3mm 63mm
RS庫存編號 106-7018
製造零件編號AD202JY
HK$431.892
毎管:9 個
單位
Single - 15 V 130dB - 1 40dB Through Hole SIP 11 15.9 x 52.8 x 6.6mm 15.9mm 6.6mm 52.8mm
RS庫存編號 866-0215
製造零件編號ISO124P
HK$149.826
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 734-4981
製造零件編號ACPL-790A-000E
BrandBroadcom
HK$50.01
單位
Single - 3 → 5.5 V - - 1 8.28V/V Through Hole PDIP 8 9.8 x 6.35 x 3.56mm 3.56mm 6.35mm 9.8mm
RS庫存編號 300-8243
製造零件編號ISO124P
HK$188.39
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 693-5974
製造零件編號ACPL-C78A-000E
BrandBroadcom
HK$71.86
單位
Single - 5 V 76dB - 1 18.15dB Surface Mount SOIC 8 3.18 x 5.85 x 6.81mm 3.18mm 6.81mm 5.85mm
RS庫存編號 830-4981
製造零件編號ACPL-C87BT-000E
BrandBroadcom
HK$88.72
單位
Single - 3 → 5.5 V - - 1 1.005V/V Surface Mount SOIC 8 5.85 x 6.807 x 3.18mm 3.18mm 6.807mm 5.85mm
RS庫存編號 159-9273
製造零件編號ADUM3190ARQZ
HK$14.709
毎管:98 個
單位
Single - 3 → 20 V - - 2 80dB Surface Mount QSOP 16 5 x 4.01 x 1.65mm 1.65mm 4.01mm 5mm