sammy-e
Newbie level 5
Hello,
1. Why does the test circuit within the app note for the DG408DJ specify a 50 ohm pull down on the enable line? A current of 50 mA would leak to ground 2.5V high signal, which seems inefficient.
2. Why is a 300 ohm pull down specified on Vo? Same as #1, this would end up with 30 mA of current being leaked to ground.
I would think a higher ohm resistor would be warranted for each. Thanks.
Info:
The DG408 is an 8 channel single-ended analog multiplexer
designed to connect one of eight inputs to a common output
as determined by a 3-bit binary address (A0, A1, A2).
https://www.mouser.com/ds/2/427/dg408-240041.pdf
1. Why does the test circuit within the app note for the DG408DJ specify a 50 ohm pull down on the enable line? A current of 50 mA would leak to ground 2.5V high signal, which seems inefficient.
2. Why is a 300 ohm pull down specified on Vo? Same as #1, this would end up with 30 mA of current being leaked to ground.
I would think a higher ohm resistor would be warranted for each. Thanks.
Info:
The DG408 is an 8 channel single-ended analog multiplexer
designed to connect one of eight inputs to a common output
as determined by a 3-bit binary address (A0, A1, A2).
https://www.mouser.com/ds/2/427/dg408-240041.pdf