Post Go back to editing

# Quiescent supply current for ADuM24xE

Hello,

Q1. Are the test conditions correct ?

The quiescent supply currents are indicated in table1 and table3 which are printed in datasheet. Idd1 and Idd2 have two current data each according to the state of Vinput.

VI = 0 (E0, D0), 1 (E1, D1)

VI = 0 (E0, D0), 1 (E1, D1)

VI = 1 (E0, D0), 0 (E1, D1)

VI = 1 (E0, D0), 0 (E1, D1)

VI = 1 (E0, D0), 0 (E1, D1)

VI = 1 (E0, D0), 0 (E1, D1)

VI = 1 (E0, D0), 0 (E1, D1)

VI = 1 (E0, D0), 0 (E1, D1)

Q2. Our customer will use ADuM240E and ADuM241E. The supply voltages are Vdd1=3.3V and Vdd2=5V. But I can not see this combination of the supply voltage in the datasheet.

Which data, table1 or table3, can I apply ?

Best regards,

ysuzuki

• ysuzuki:

A1: The correct conditions are:

VI = 0 (E0, D0), 1 (E1, D1)

VI = 0 (E0, D0), 1 (E1, D1)

VI = 1 (E0, D0), 0 (E1, D1)

VI = 1 (E0, D0), 0 (E1, D1)

The ADuM241/242 conditions will be corrected in the next revision.

A2: For a mixed supply mode like your example where the supply voltages are Vdd1=3.3V and Vdd2=5V, use the table 4 for VDD1 = 3.3V for IDD1, and the table 2 for VDD2 = 5V for IDD2. Note, since the ADuM24x has the widest range of supply voltages from 1.7V to 5.5V, with 4 voltage tables, 5V 3.3V, 2.5V and 1.8V, adding mixed mode tests was not included.

Regards, Brian