Other Parts Discussed in Thread: ISO7831
Dear Specialists,
My customer is considering DAC8760 and has a question.
I would be grateful if you could advise.
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I am considering the circuit of DAC8760 Figure 96.
DVDD supplies to two ISO7831.
I am concerned about the supply current.
One of the ISO7831 uses for serial clk, CLK frequency is up to 12.5MHz(25Mbps), the maximum supply current may be 7.8mA.
Another ISO7831 is not for ALARM, CLR and LATCH, not so high, the maximum supply current may be 3.9mA.
The total supply current of two ISO7831 is 11.7mA.
On the other hand, supply current of DVDD is up to 10mA.
The current of isolators exceeds the supply current of DVDD.
Does this means DVDD is not available in worst case?
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I appreciate your great help in advance.
Best regards,
Shinichi