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 121 - 123 of 123 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. 174-4179
Mfr. Part No.HCPL-7800A-500E
BrandBroadcom
SGD17.36
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. 922-5652
Mfr. Part No.HCPL-788J-000E
BrandBroadcom
SGD9.89
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. 830-4971
Mfr. Part No.ACPL-7900-300E
BrandBroadcom
SGD8.24
Each (In a Pack of 2)
units
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
Related Products
The Instrumentation Amplifier ICs amplify the difference between ...
Description:
The Instrumentation Amplifier ICs amplify the difference between two input signal voltages, while rejecting any signals that are common to both inputs. The DC precision and gain accuracy is maintained within a noisy environment, and also where large common-mode signals ...
The Instrumentation Amplifier ICs amplify the difference between ...
Description:
The Instrumentation Amplifier ICs amplify the difference between two input signal voltages, while rejecting any signals that are common to both inputs. The DC precision and gain accuracy is maintained within a noisy environment, and also where large common-mode signals ...
The Instrumentation Amplifier ICs amplify the difference between ...
Description:
The Instrumentation Amplifier ICs amplify the difference between two input signal voltages, while rejecting any signals that are common to both inputs. The DC precision and gain accuracy is maintained within a noisy environment, and also where large common-mode signals ...
Thermocouple-to-Digital ConverterIntegrated Cold-Junction CompensationThermocouple Types: K-, J-, N-, ...
Description:
Thermocouple-to-Digital ConverterIntegrated Cold-Junction CompensationThermocouple Types: K-, J-, N-, T-, S-, R-, and E-Type0.25°C ResolutionDetects Thermocouple Shorts to GND or VCCDetects Open ThermocoupleInterfaces with simple SPI-Compatible Serial Interface (Read-Only) to Microcontrollers.