first my application is a galvanic isolated DAC with 4..20mA Ootput. I am using the adum1310 for the galvanic isolation of the Serial Interface of the loop powered AD421. I am using up to 6 of these couples parallel to transform digital data into my 4..20mA signal.
to reduce current consumption in battery-mode i thought i could switch of the VDDi using a mosfet driven by latch signal. the latch signal is also connected to the disable pin. unfortunately the adum1310 is consuming the quiescent current through the Clock, Latch and Data signalpaths.
is there any possibilty to reduce the current consumption without using logic elements to disconnect each signal?