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 Prix 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
N° de stock RS 803-0747
Référence fabricantACPL-782T-300E
MarqueBroadcom
10,17 €
Each
Unité
- - - - - - - Surface Mount DIP - - - - -
N° de stock RS 178-3173
Référence fabricantACPL-782T-300E
MarqueBroadcom
8,878 €
Each (In a Tube of 50)
Unité
- - - - - - - - - - - - - -
N° de stock RS 922-6765
Référence fabricantACPL-C87A-000E
MarqueBroadcom
4,274 €
Each (In a Tube of 80)
Unité
Single - 4.5 → 5.5 V -78dB - 1 1.01V/V Surface Mount SSOP 8 5.85 x 6.807 x 3.18mm 3.18mm 6.807mm 5.85mm
N° de stock RS 768-7897
Référence fabricantACPL-C87A-000E
MarqueBroadcom
5,62 €
Each
Unité
Single - 4.5 → 5.5 V -78dB - 1 1.01V/V Surface Mount SSOP 8 5.85 x 6.807 x 3.18mm 3.18mm 6.807mm 5.85mm
N° de stock RS 866-0215
Référence fabricantISO124P
16,53 €
Each (In a Tube of 25)
Unité
Dual ±4.5 → ±18V - 140dB - 1 - Through Hole PDIP 8 21.34 x 7.11 x 4.95mm 4.95mm 7.11mm 21.34mm
N° de stock RS 106-7018
Référence fabricantAD202JY
73,063 €
Each (In a Tube of 9)
Unité
Single - 15 V 130dB - 1 40dB Through Hole SIP 11 15.9 x 52.8 x 6.6mm 15.9mm 6.6mm 52.8mm
N° de stock RS 369-5774
Référence fabricantAD202JY
77,518 €
Each (In a Tube of 9)
Unité
Single - 15 V 130dB - 1 40dB Through Hole SIP 11 15.9 x 52.8 x 6.6mm 15.9mm 6.6mm 52.8mm
N° de stock RS 300-8243
Référence fabricantISO124P
18,12 €
Each
Unité
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
N° de stock RS 450-868
Référence fabricantHCPL-7800-300E
MarqueBroadcom
8,14 €
Each
Unité
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
N° de stock RS 922-5655
Référence fabricantHCPL-7800-300E
MarqueBroadcom
7,025 €
Each (In a Tube of 50)
Unité
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
N° de stock RS 818-8262
Référence fabricantACPL-782T-000E
MarqueBroadcom
10,14 €
Each
Unité
- - - - - - - Through Hole - - - - - -
N° de stock RS 121-8550
Référence fabricantISO122JP
25,644 €
Each (In a Tube of 25)
Unité
- - - - - - - - - - - - - -
N° de stock RS 461-8267
Référence fabricantISO122JP
23,35 €
Each
Unité
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
N° de stock RS 178-3179
Référence fabricantACPL-782T-000E
MarqueBroadcom
8,844 €
Each (In a Tube of 50)
Unité
- - - - - - - Through Hole DIP - - - - -
N° de stock RS 786-3167
Référence fabricantADUM4190BRIZ
2,875 €
Each (In a Pack of 2)
Unité
Single - 3 → 20 V - - 1 80dB Surface Mount SOIC 16 12.85 x 7.6 x 2.44mm 2.44mm 7.6mm 12.85mm
N° de stock RS 369-5819
Référence fabricantAD210JN
100,121 €
Each (In a Tube of 9)
Unité
Single - 15 V 120dB - 1 40dB Through Hole PDIP 12 8.91 x 53.3 x 25.4mm 8.91mm 25.4mm 53.3mm
N° de stock RS 910-8257
Référence fabricantACPL-798J-000E
MarqueBroadcom
5,59 €
Each
Unité
Single - 3 → 5.5 (VDD2) V, 4.5 → 5.5 (VDD1) V - - - - Surface Mount SOIC 16 10.31 x 7.49 x 3.5mm 3.5mm 7.49mm 10.31mm
N° de stock RS 178-3139
Référence fabricantACPL-798J-000E
MarqueBroadcom
4,877 €
Each (In a Tube of 45)
Unité
Single - 3 → 5.5 (VDD2) V, 4.5 → 5.5 (VDD1) V - - - - Surface Mount SOIC 16 10.31 x 7.49 x 3.5mm 3.5mm 7.49mm 10.31mm
N° de stock RS 145-7087
Référence fabricantAD204JY
61,973 €
Each (In a Tube of 9)
Unité
- - - 130dB - 1 40dB Through Hole SIP 11 15.9 x 52.8 x 6.3mm 15.9mm 6.3mm 52.8mm
N° de stock RS 159-9277
Référence fabricantADUM4190BRIZ
2,318 €
Each (In a Tube of 37)
Unité
Single - 3 → 20 V - - 1 80dB Surface Mount SOIC 16 12.85 x 7.6 x 2.44mm 2.44mm 7.6mm 12.85mm