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Rev. 0
APPENDIX A: USAGE OF SPI ISOLATOR INSTEAD OF ISOSPI
Figure 49. ADUM141E SPI Isolator Schematic
If required by customer, it is also possible to use a SPI iso-
lator instead of LTC2949’s integrated isoSPI. One exam-
ple is the ADuM141E which could be inserted into the SPI
interface using the Linduino QuikEval connector J4 and
then connect to the Linduino or any other host controller,
as shown in in Figure 49. In this scenario IOV
CC
of the
LTC2949 is shorted to BYP2 which will then also sup-
ply V
DD1
of the ADuM141E. Usage of other SPI isolators
with additional chip select lines is also possible, which
would allow to connect additional SPI slaves together with
LTC2949. Please contact Analog Device for details on this
evaluation setup.
