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 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. 759-2187
Mfr. Part No.AD202KN
kr 846,18
Each
Units
Single - 15 V 105dB - 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. 786-3154
Mfr. Part No.ADUM3190BRQZ
kr 24,125
Each (In a Pack of 2)
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. 106-7018
Mfr. Part No.AD202JY
kr 693,14
Each (In a Tube of 9)
Units
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 Stock No. 758-9579
Mfr. Part No.AD204KN
kr 767,39
Each
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. 145-6786
Mfr. Part No.AD204KN
kr 719,127
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. 127-0272
Mfr. Part No.AD202JN
kr 659,91
Each
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. 145-7696
Mfr. Part No.ADUM3190BRQZ
kr 19,499
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. 369-5774
Mfr. Part No.AD202JY
kr 732,872
Each (In a Tube of 9)
Units
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 Stock No. 106-7013
Mfr. Part No.AD202JN
kr 486,148
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. 786-3151
Mfr. Part No.ADUM3190ARQZ
kr 22,73
Each (In a Pack of 2)
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. 796-8748
Mfr. Part No.ADUM4190SRIZ
kr 29,132
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. 796-8789
Mfr. Part No.AD210AN
kr 1 037,78
Each
Units
Dual ±15V - 120dB - 1 100V/V Through Hole PDIP 12 53.3 x 25 x 8.91mm 8.91mm 25mm 53.3mm
RS Stock No. 145-7698
Mfr. Part No.ADUM4190SRIZ
kr 23,322
Each (In a Tube of 37)
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. 796-8745
Mfr. Part No.ADUM3190TRQZ
kr 27,617
Each (In a Pack of 7)
Units
Single - 3 → 20 V 72dB - 1 80dB Surface Mount QSOP 16 5 x 4.01 x 1.65mm 1.65mm 4.01mm 5mm
RS Stock No. 786-3167
Mfr. Part No.ADUM4190BRIZ
kr 28,665
Each (In a Pack of 2)
Units
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 Stock No. 159-9305
Mfr. Part No.ADUM4190TRIZ
kr 27,835
Each (In a Tube of 37)
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. 796-8736
Mfr. Part No.ADUM3190SRQZ
kr 24,726
Each (In a Pack of 7)
Units
Single - 3 → 20 V 72dB - 1 80dB Surface Mount QSOP 16 5 x 4.01 x 1.65mm 1.65mm 4.01mm 5mm
RS Stock No. 183-1683
Mfr. Part No.AD210BN
kr 1 049,841
Each (In a Tube of 9)
Units
Single - 15 V 120dB - 1 100V/V Through Hole PDIP 12 53.3 x 25.4 x 8.91mm 8.91mm 25.4mm 53.3mm
RS Stock No. 159-9274
Mfr. Part No.ADUM4190ARIZ
kr 20,959
Each (In a Tube of 37)
Units
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 Stock No. 231-5196
Mfr. Part No.AD215AY
kr 994,81
Each
Units
Dual ±15V - - - 1 20dB Through Hole SIP 12 21.4 x 63 x 8.3mm 21.4mm 8.3mm 63mm