AN-825 Datasheet, PDF (1/8 Pages) Analog Devices – Power Supply Considerations in iCoupler® Isolation Products

AN-825
APPLICATION NOTE
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Power Supply Considerations in iCoupler^® Isolation Products
by Rich Ghiorse
INTRODUCTION
This application note is a guide to help users understand the
function of Analog Devices iCouplers under various power
supply conditions. Also discussed are the details of calculating
supply current consumption and power dissipation.
iCoupler products offer an alternative isolation solution to
optocouplers with superior integration, performance, and
power consumption characteristics. An iCoupler isolation
channel consists of CMOS input and output circuits and a chip-
scale transformer (Figure 1). In all applications, an iCoupler is
powered by two separate sources which do not share a common
ground. Various scenarios must be considered during design to
ensure that all powered states are understood.
Figure 1. ADuM140x Quad Isolator
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