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. 121-9701
FabrikantnummerAMC1100DUB
€ 3,883
Each (In a Tube of 50)
Aantal stuks
Dual 5V - 108dB - 1 - Surface Mount SOP 8 9.55 x 6.67 x 3.35mm 3.35mm 6.67mm 9.55mm
RS-stocknr. 817-5786
FabrikantnummerAMC1100DUB
€ 4,60
Each
Aantal stuks
Dual 5V - 108dB - 1 - Surface Mount SOP 8 9.55 x 6.67 x 3.35mm 3.35mm 6.67mm 9.55mm
RS-stocknr. 178-3171
FabrikantnummerACPL-790A-000E
FabrikantBroadcom
€ 4,665
Each (In a Tube of 50)
Aantal stuks
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-stocknr. 734-4981
FabrikantnummerACPL-790A-000E
FabrikantBroadcom
€ 5,66
Each
Aantal stuks
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-stocknr. 922-6731
FabrikantnummerACPL-7900-000E
FabrikantBroadcom
€ 2,783
Each (In a Tube of 50)
Aantal stuks
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-stocknr. 922-5687
FabrikantnummerHCPL-7800A-000E
FabrikantBroadcom
€ 9,118
Each (In a Tube of 50)
Aantal stuks
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-stocknr. 450-868
FabrikantnummerHCPL-7800-300E
FabrikantBroadcom
€ 8,20
Each
Aantal stuks
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
RS-stocknr. 300-8259
FabrikantnummerISO124U
€ 18,91
Each
Aantal stuks
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-stocknr. 121-8514
FabrikantnummerISO124U
€ 16,949
Each (In a Tube of 20)
Aantal stuks
- - - - - - - - - - - - - -
RS-stocknr. 106-7017
FabrikantnummerAD215AY
FabrikantAnalog Devices
€ 72,256
Each (In a Tube of 8)
Aantal stuks
Dual ±15V - - - 1 20dB Through Hole SIP 12 21.4 x 63 x 8.3mm 21.4mm 8.3mm 63mm
RS-stocknr. 451-007
FabrikantnummerHCPL-7800A-000E
FabrikantBroadcom
€ 10,21
Each
Aantal stuks
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-stocknr. 734-4988
FabrikantnummerACPL-7900-000E
FabrikantBroadcom
€ 4,57
Each
Aantal stuks
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-stocknr. 922-5655
FabrikantnummerHCPL-7800-300E
FabrikantBroadcom
€ 7,331
Each (In a Tube of 50)
Aantal stuks
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
RS-stocknr. 231-5196
FabrikantnummerAD215AY
FabrikantAnalog Devices
€ 75,38
Each
Aantal stuks
Dual ±15V - - - 1 20dB Through Hole SIP 12 21.4 x 63 x 8.3mm 21.4mm 8.3mm 63mm
RS-stocknr. 830-4987
FabrikantnummerACPL-C87AT-000E
FabrikantBroadcom
€ 8,70
Each
Aantal stuks
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-stocknr. 178-3213
FabrikantnummerACPL-C87AT-000E
FabrikantBroadcom
€ 7,583
Each (In a Tube of 80)
Aantal stuks
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-stocknr. 121-8271
FabrikantnummerISO122U
€ 26,143
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. 768-7907
FabrikantnummerACPL-C87B-000E
FabrikantBroadcom
€ 6,28
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. 922-5665
FabrikantnummerHCPL-7800A-300E
FabrikantBroadcom
€ 9,176
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. 450-907
FabrikantnummerHCPL-7840-300E
FabrikantBroadcom
€ 5,83
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