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 450-903
製造零件編號HCPL-7800A-300E
BrandBroadcom
TWD391.00
單位
Single - 5 V 76dB - 1 18.14dB Surface Mount PDIP SMD 8 3.56 x 9.8 x 6.35mm 3.56mm 6.35mm 9.8mm
RS庫存編號 922-5665
製造零件編號HCPL-7800A-300E
BrandBroadcom
TWD334.40
毎管:50 個
單位
Single - 5 V 76dB - 1 18.14dB Surface Mount PDIP SMD 8 3.56 x 9.8 x 6.35mm 3.56mm 6.35mm 9.8mm
RS庫存編號 922-6731
製造零件編號ACPL-7900-000E
BrandBroadcom
TWD149.70
毎管:50 個
單位
Single - 3 → 5.5 V - - 1 8.44V/V Through Hole PDIP 8 9.8 x 6.35 x 3.56mm 3.56mm 6.35mm 9.8mm
RS庫存編號 734-4988
製造零件編號ACPL-7900-000E
BrandBroadcom
TWD176.00
單位
Single - 3 → 5.5 V - - 1 8.44V/V Through Hole PDIP 8 9.8 x 6.35 x 3.56mm 3.56mm 6.35mm 9.8mm
RS庫存編號 121-8514
製造零件編號ISO124U
TWD653.10
毎管:20 個
單位
- - - - - - - - - - - - - -
RS庫存編號 300-8259
製造零件編號ISO124U
TWD708.00
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 451-007
製造零件編號HCPL-7800A-000E
BrandBroadcom
TWD390.00
單位
Single - 5 V 76dB - 1 18.14dB Through Hole PDIP 8 3.56 x 9.8 x 6.35mm 3.56mm 6.35mm 9.8mm
RS庫存編號 817-5786
製造零件編號AMC1100DUB
TWD177.00
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 922-5687
製造零件編號HCPL-7800A-000E
BrandBroadcom
TWD333.00
毎管:50 個
單位
Single - 5 V 76dB - 1 18.14dB Through Hole PDIP 8 3.56 x 9.8 x 6.35mm 3.56mm 6.35mm 9.8mm
RS庫存編號 121-9701
製造零件編號AMC1100DUB
TWD149.70
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 127-0272
製造零件編號AD202JN
TWD2,714.00
單位
Single - 15 V 130dB - 1 40dB Through Hole PDIP 11 8.9 x 53.3 x 17.8mm 8.9mm 17.8mm 53.3mm
RS庫存編號 922-5674
製造零件編號HCPL-7840-300E
BrandBroadcom
TWD185.00
毎管:50 個
單位
Single - 5 V 76.1dB - 1 18.49dB Surface Mount PDIP SMD 8 3.56 x 9.8 x 6.35mm 3.56mm 6.35mm 9.8mm
RS庫存編號 450-907
製造零件編號HCPL-7840-300E
BrandBroadcom
TWD218.00
單位
Single - 5 V 76.1dB - 1 18.49dB Surface Mount PDIP SMD 8 3.56 x 9.8 x 6.35mm 3.56mm 6.35mm 9.8mm
RS庫存編號 106-7013
製造零件編號AD202JN
TWD2,679.10
毎管:9 個
單位
Single - 15 V 130dB - 1 40dB Through Hole PDIP 11 8.9 x 53.3 x 17.8mm 8.9mm 17.8mm 53.3mm
RS庫存編號 768-7907
製造零件編號ACPL-C87B-000E
BrandBroadcom
TWD235.00
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 922-6510
製造零件編號ACPL-7900-300E
BrandBroadcom
TWD151.40
毎管:50 個
單位
Single - 3 → 5.5 V - - 1 8.44V/V Surface Mount PDIP 8 9.8 x 6.35 x 3.56mm 3.56mm 6.35mm 9.8mm
RS庫存編號 693-5974
製造零件編號ACPL-C78A-000E
BrandBroadcom
TWD376.00
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 922-6633
製造零件編號ACPL-C78A-000E
BrandBroadcom
TWD327.40
毎管:80 個
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 121-8550
製造零件編號ISO122JP
TWD771.50
毎管:25 個
單位
- - - - - - - - - - - - - -
RS庫存編號 450-868
製造零件編號HCPL-7800-300E
BrandBroadcom
TWD313.00
單位
Single - 5 V 76dB - 1 18.31dB Surface Mount PDIP SMD 8 3.56 x 9.8 x 6.35mm 3.56mm 6.35mm 9.8mm