Isolation
Isolation is used to provide complete separation of two separate electronic circuits or systems. The techniques involved use either capacitive, inductive, or optical transmission of a signal across a barrier so that there is no 'wired' connection between them that conduct a current. This is important in medical systems so to protect patients, and is also very useful in high-power motors so that current flow in high-voltage windings can be communicated to low-voltage control circuits. Isolation is also useful for separating the
grounds of systems to improve noise performance.
Application Notes
- AN-927 : Determining if a Spur is Related to the DDS/DAC or to Some Other Source (For Example, Switching Supplies)
- AN-849 : Using Op Amps as Comparators
- AN-793 : ESD/Latch-Up Considerations with iCoupler® Isolation Products
- AN-740 : iCoupler® Isolation in RS-232 Applications
- AN-727 : iCoupler® Isolation in RS-485 Applications
- AN-649 : Using the Analog Devices Active Filter Design Tool
- AN-541 : Proper System Grounding Techniques for 6B Series Systems
- AN-536 : Dimensional Gaging Measurements with Model 3B17
- AN-535 : Digital Input/Output Subsystems
- AN-533 : Applying 5B Series Backplanes and Mounting Cards
- AN-532 : Applying Model 5B38 with 120 ohm Bridges
- AN-531 : 5B37 Transfer Function Calculating the Output Voltage of a 5B37 Signal Conditioner
- AN-530 : 0: Narrow or Wide Bandwidth 5B Series Input Modules: Which is the Right Choice?
- AN-529 : 5B Series Signal Conditioning Subsystems in RFI/EMI Fields
- AN-528 : Design Considerations for Designing a 5B Series System
- AN-359 : Settling Time of Operational Amplifiers
- AN-358 : Noise and Operational Amplifier Circuits
- AN-357 : Operational Integrators
- AN-356 : User's Guide to Applying and Measuring Operational Amplifier Specifications
- AN-3 : AB-3: Digital Nulling of Precision Op Amps
- AN-256 : Accurately Testing Op Amp Settling Times
- AN-253 : Find Op Amp Noise with Spreadsheet
- AN-138 : SPICE-Compatible Op Amp Macro-Models
- AN-117 : OP-42 Advanced SPICE Macro-Model
- AN-113 : AB-113: Precision Ramp Generator
- AN-112 : AB-112: Single Resistor Controls Wien Bridge Oscillator Frequency
Frequency control can be added to the conventional Wien Bridge Circuit by adding an op amp inverter. - AN-111 : AB-111: Single-Supply Wien Bridge Oscillator
Wien Bridge Oscillators require only one op amp, important in battery-operation. This circuit operates from a single 9V battery. - AN-109 : AB-109: High Speed Precision Rectifier
The low offsets and excellent load driving capability of the OP-27 are key advantages in this precision rectifier circuit. - AN-106 : 06: A Collection of Amp Applications
Examines Some of the Numerous and Widely Used Applications of the Operational Amplifier
Product Reviews
- Dual In-Amp And Signal Isolators Sweat The Small Stuff
(ED, 4/13/2006)
Technical Articles
- Charge Your SAR-Converter Inputs
(EDN, 5/11/2006) - iCoupler™: Optokoppler abgehängt (German)
- Integrated Transformer-Coupled Isolation, by Ronn Kliger, (pdf, 544,768 bytes)
Copyright (c) 2003 IEEE. Reprinted from (IEEE Instrumentation & Measurement Magazine Volume: 6, Issue: 1, March 2003). This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of Analog Devices's products or services Internal or personal use of this material is permitted. - iCoupler™: Remplacer un photocoupler rapide par un isolator logique micro-usiné (French)
- Isolated Analog I/O Designs Benefit from New Family of
- Isolation with Waferscale Transformers
By R. Kliger, B. Chen and J. Wynne, Analog Devices, Inc. (Reprinted with permission of Power Electronics Europe, Issue 6, 2003) - Isolation in Medical Applications
by Rich Ghiorse and Steve Ranta, Analog Devices, Inc. (Power Electronics-Europe, 7/2005)