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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Omschrijving Prijs 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-stocknr. 121-9702
FabrikantnummerAMC1200SDUB
€ 4,501
Each (In a Tube of 50)
Aantal stuks
Dual 5V - - - 1 8 Surface Mount SOP 8 9.55 x 6.67 x 3.35mm 3.35mm 6.67mm 9.55mm
RS-stocknr. 450-903
FabrikantnummerHCPL-7800A-300E
FabrikantBroadcom
€ 10,18
Each
Aantal stuks
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-stocknr. 768-7907
FabrikantnummerACPL-C87B-000E
FabrikantBroadcom
€ 6,38
Each
Aantal stuks
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-stocknr. 912-9787
FabrikantnummerAD202KY
FabrikantAnalog Devices
€ 83,788
Each (In a Tube of 9)
Aantal stuks
Single - 15 V 105dB - 2 1 → 100V/V Through Hole SIP 10 52.8 x 6.6 x 15.9mm 15.9mm 6.6mm 52.8mm
RS-stocknr. 288-777
FabrikantnummerISO122U
€ 29,46
Each
Aantal stuks
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-stocknr. 921-3000
FabrikantnummerAMC1200SDUBR
€ 3,492
Each (On a Reel of 350)
Aantal stuks
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-stocknr. 922-5665
FabrikantnummerHCPL-7800A-300E
FabrikantBroadcom
€ 8,782
Each (In a Tube of 50)
Aantal stuks
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-stocknr. 922-5674
FabrikantnummerHCPL-7840-300E
FabrikantBroadcom
€ 4,672
Each (In a Tube of 50)
Aantal stuks
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-stocknr. 825-3164
FabrikantnummerAMC1200SDUBR
€ 5,07
Each (In a Pack of 2)
Aantal stuks
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-stocknr. 450-907
FabrikantnummerHCPL-7840-300E
FabrikantBroadcom
€ 5,79
Each
Aantal stuks
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-stocknr. 714-0206
FabrikantnummerACPL-C79B-000E
FabrikantBroadcom
€ 7,67
Each
Aantal stuks
Single - 4.5 → 5.5 V - - 2 8.24V/V Surface Mount SSOP 8 5.85 x 6.807 x 3.18mm 3.18mm 6.807mm 5.85mm
RS-stocknr. 300-8243
FabrikantnummerISO124P
€ 18,12
Each
Aantal stuks
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-stocknr. 818-8262
FabrikantnummerACPL-782T-000E
FabrikantBroadcom
€ 10,14
Each
Aantal stuks
- - - - - - - Through Hole - - - - - -
RS-stocknr. 121-8271
FabrikantnummerISO122U
€ 27,191
Each (In a Tube of 20)
Aantal stuks
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-stocknr. 178-3179
FabrikantnummerACPL-782T-000E
FabrikantBroadcom
€ 8,844
Each (In a Tube of 50)
Aantal stuks
- - - - - - - Through Hole DIP - - - - -
RS-stocknr. 178-3209
FabrikantnummerACPL-C79B-000E
FabrikantBroadcom
€ 6,032
Each (In a Tube of 80)
Aantal stuks
Single - 4.5 → 5.5 V - - 2 8.24V/V Surface Mount SSOP 8 5.85 x 6.807 x 3.18mm 3.18mm 6.807mm 5.85mm
RS-stocknr. 866-0215
FabrikantnummerISO124P
€ 16,53
Each (In a Tube of 25)
Aantal stuks
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-stocknr. 922-6769
FabrikantnummerACPL-C87B-000E
FabrikantBroadcom
€ 5,138
Each (In a Tube of 80)
Aantal stuks
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-stocknr. 759-2196
FabrikantnummerAD202KY
FabrikantAnalog Devices
€ 92,97
Each
Aantal stuks
Single - 15 V 105dB - 2 1 → 100V/V Through Hole SIP 10 52.8 x 6.6 x 15.9mm 15.9mm 6.6mm 52.8mm
RS-stocknr. 369-5774
FabrikantnummerAD202JY
FabrikantAnalog Devices
€ 77,518
Each (In a Tube of 9)
Aantal stuks
Single - 15 V 130dB - 1 40dB Through Hole SIP 11 15.9 x 52.8 x 6.6mm 15.9mm 6.6mm 52.8mm
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