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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Beskrivning Pris 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-artikelnummer 106-7018
Tillv. art.nrAD202JY
VarumärkeAnalog Devices
1 192,934 kr
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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-artikelnummer 830-4981
Tillv. art.nrACPL-C87BT-000E
VarumärkeBroadcom
141,19 kr
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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-artikelnummer 922-6513
Tillv. art.nrACPL-C87BT-000E
VarumärkeBroadcom
101,581 kr
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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-artikelnummer 693-5965
Tillv. art.nrACPL-C784-000E
VarumärkeBroadcom
85,74 kr
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Single - 5 V 76dB - 1 18.49dB Surface Mount SSOP 8 3.18 x 5.85 x 6.81mm 3.18mm 6.81mm 5.85mm
RS-artikelnummer 786-3151
Tillv. art.nrADUM3190ARQZ
VarumärkeAnalog Devices
50,385 kr
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Single - 3 → 20 V - - 2 80dB Surface Mount QSOP 16 5 x 4.01 x 1.65mm 1.65mm 4.01mm 5mm
RS-artikelnummer 866-0215
Tillv. art.nrISO124P
VarumärkeTexas Instruments
244,628 kr
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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-artikelnummer 106-7017
Tillv. art.nrAD215AY
VarumärkeAnalog Devices
1 213,644 kr
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Dual ±15V - - - 1 20dB Through Hole SIP 12 21.4 x 63 x 8.3mm 21.4mm 8.3mm 63mm
RS-artikelnummer 174-4175
Tillv. art.nrACPL-C79A-500E
VarumärkeBroadcom
91,55 kr
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- - - - - - - Surface Mount SO - - - - -
RS-artikelnummer 121-9702
Tillv. art.nrAMC1200SDUB
VarumärkeTexas Instruments
62,047 kr
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Dual 5V - - - 1 8 Surface Mount SOP 8 9.55 x 6.67 x 3.35mm 3.35mm 6.67mm 9.55mm
RS-artikelnummer 910-8257
Tillv. art.nrACPL-798J-000E
VarumärkeBroadcom
96,51 kr
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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
RS-artikelnummer 461-8267
Tillv. art.nrISO122JP
VarumärkeTexas Instruments
392,44 kr
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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-artikelnummer 786-3167
Tillv. art.nrADUM4190BRIZ
VarumärkeAnalog Devices
69,37 kr
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Single - 3 → 20 V - - 1 80dB Surface Mount SOIC 16 12.85 x 7.6 x 2.44mm 2.44mm 7.6mm 12.85mm
RS-artikelnummer 795-1472
Tillv. art.nrSi8261BAA-C-IS
23,14 kr
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Single - 5 → 30 V - Rail to Rail Output 1 - Surface Mount SOIC 8 5 x 4 x 1.55mm 1.55mm 5mm 5mm
RS-artikelnummer 768-7897
Tillv. art.nrACPL-C87A-000E
VarumärkeBroadcom
82,86 kr
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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
RS-artikelnummer 178-3172
Tillv. art.nrACPL-790B-000E
VarumärkeBroadcom
83,335 kr
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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
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RS-artikelnummer 244-9771
Tillv. art.nrNJM2505AF-TE1
VarumärkeNew Japan Radio
12,636 kr
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Single - 4.5 → 9 V - No 1 - - SOT23-5 5 - - - -
RS-artikelnummer 922-6624
Tillv. art.nrACPL-C780-000E
VarumärkeBroadcom
78,186 kr
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Single - 5 V 76dB - 1 18.32dB Surface Mount SOIC 8 3.18 x 5.85 x 6.81mm 3.18mm 6.81mm 5.85mm
RS-artikelnummer 714-0206
Tillv. art.nrACPL-C79B-000E
VarumärkeBroadcom
120,08 kr
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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-artikelnummer 922-6510
Tillv. art.nrACPL-7900-300E
VarumärkeBroadcom
60,569 kr
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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-artikelnummer 796-8742
Tillv. art.nrADUM4190TRIZ
VarumärkeAnalog Devices
73,518 kr
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Single - 3 → 20 V 72dB - 1 80dB Surface Mount SOIC 16 12.85 x 7.6 x 2.44mm 2.44mm 7.6mm 12.85mm