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.

...
Read more Read less

Filters

Viewing 61 - 80 of 109 products
Results per page
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 stock no. 921-3000
Mfr. Part No.AMC1200SDUBR
R 56.424
Each (On a Reel of 350)
units
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 stock no. 825-3164
Mfr. Part No.AMC1200SDUBR
R 80.11
Each (In a Pack of 2)
units
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 stock no. 734-4981
Mfr. Part No.ACPL-790A-000E
BrandBroadcom
R 110.39
Each
units
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 stock no. 709-2324
Mfr. Part No.ISO122JU
R 467.45
Each
units
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 stock no. 174-3675
Mfr. Part No.HCPL-7800A-500E
BrandBroadcom
R 112.327
Each (On a Reel of 1000)
units
Single - Maximum of 5.5 V 76dB - 1 8.08V/V Surface Mount DIP 8 9.8 x 6.35 x 3.56mm 3.56mm 6.35mm 9.8mm
RS stock no. 178-3209
Mfr. Part No.ACPL-C79B-000E
BrandBroadcom
R 117.349
Each (In a Tube of 80)
units
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 stock no. 106-7013
Mfr. Part No.AD202JN
R 1,406.259
Each (In a Tube of 9)
units
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 stock no. 197-7179
Mfr. Part No.ISO122P
R 484.066
Each (In a Tube of 25)
units
Single ±15V - 140dB - - - - PDIP 8 - - - -
RS stock no. 174-4179
Mfr. Part No.HCPL-7800A-500E
BrandBroadcom
R 194.42
Each
units
Single - Maximum of 5.5 V 76dB - 1 8.08V/V Surface Mount DIP 8 9.8 x 6.35 x 3.56mm 3.56mm 6.35mm 9.8mm
RS stock no. 121-8514
Mfr. Part No.ISO124U
R 337.601
Each (In a Tube of 20)
units
- - - - - - - - - - - - - -
RS stock no. 910-8229
Mfr. Part No.ACNT-H79A-000E
BrandBroadcom
R 185.43
Each
units
Single - 3 → 5.5 (VDD2) V, 4.5 → 5.5 (VDD1) V - - - 8.26V/V Surface Mount SOIC 8 13.6 x 6.24 x 3.4mm 3.4mm 6.24mm 13.6mm
RS stock no. 178-3210
Mfr. Part No.ACPL-C79A-000E
BrandBroadcom
R 94.123
Each (In a Tube of 80)
units
Single - 4.5 → 5.5 V - - 2 8.28V/V Surface Mount SSOP 8 5.85 x 6.807 x 3.18mm 3.18mm 6.807mm 5.85mm
RS stock no. 145-7087
Mfr. Part No.AD204JY
R 1,246.687
Each (In a Tube of 9)
units
- - - 130dB - 1 40dB Through Hole SIP 11 15.9 x 52.8 x 6.3mm 15.9mm 6.3mm 52.8mm
RS stock no. 159-9273
Mfr. Part No.ADUM3190ARQZ
R 40.206
Each (In a Tube of 98)
units
Single - 3 → 20 V - - 2 80dB Surface Mount QSOP 16 5 x 4.01 x 1.65mm 1.65mm 4.01mm 5mm
RS stock no. 121-8271
Mfr. Part No.ISO122U
R 520.289
Each (In a Tube of 20)
units
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 stock no. 922-5652
Mfr. Part No.HCPL-788J-000E
BrandBroadcom
R 119.602
Each (In a Tube of 45)
units
Dual 5V - 140dB - 1 - Surface Mount SOIC 16 3.51 x 10.31 x 7.49mm 3.51mm 7.49mm 10.31mm
RS stock no. 145-6786
Mfr. Part No.AD204KN
R 1,423.241
Each (In a Tube of 9)
units
- - - 110dB - 2 1 → 100V/V Through Hole PDIP 10 53.3 x 17.8 x 8.52mm 8.52mm 17.8mm 53.3mm
RS stock no. 796-8748
Mfr. Part No.ADUM4190SRIZ
R 59.956
Each (In a Pack of 5)
units
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
RS stock no. 922-6624
Mfr. Part No.ACPL-C780-000E
BrandBroadcom
R 135.894
Each (In a Tube of 80)
units
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 stock no. 795-1472
Mfr. Part No.Si8261BAA-C-IS
R 23.326
Each (In a Pack of 5)
units
Single - 5 → 30 V - Rail to Rail Output 1 - Surface Mount SOIC 8 5 x 4 x 1.55mm 1.55mm 5mm 5mm