Hi team,
I'd like to know the operation when EA+ is not entered.
What happens to the output when EA+ is 0V when there is an input in VDD and EN/SS?
I want to know when there is no input and input in EA-.
Sincerely.
Kengo.
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Hi team,
I'd like to know the operation when EA+ is not entered.
What happens to the output when EA+ is 0V when there is an input in VDD and EN/SS?
I want to know when there is no input and input in EA-.
Sincerely.
Kengo.
Hello,
The common mode range of the amplifier is 0.5 V to 3.6V. So the amplifier should not be set with EA+ = 0. The device does have a VREF good comparator so during power up the controller should not respond to 0 V on EA+ when VERF is not operation.
Condition two should not occur.
When EA- is at zero voltage and EA+ is in the common mode range. The amplfier's output should drive high demanding duty cycle.
Regards,
Hi Mike,
Thank you for your reply.
There is a description as follows in the test condition.
I think that there is no problem with an input of 0.5V or less.
Could you tell me what the output looks like when EA + is 0V.
Sincerely.
Kengo.
Hello,
You should not set EA + to zero volts. This is the reference voltage you are controlling the loop too. We have not tested the EA+ with less than 0.5V because this is outside the common mode range.
If you are testing this amplifier open loop and bringing down the EA + to 0V you may have misbehavior due to the Error Amplifier offset which is +/- 7 mV.
The other issue you may be having is the amplifier was not design to have an EA of less than -0.5V. This is specified in the VICIM range in the data sheet.
Regards,
Thank you for your quick reply.
I'm sorry, I don't understand well.
What does the test condition mean?
Does this mean that this condition is excluded?
And, should I if I connect EA+ to VREF as in the datasheet, it won't be 0V?
Sincerely.
Kengo.
Hello,
The common mode range is 0.5V to 3.6V.
The -0.4V to 0.5V is not the common mode range and is listed as a test condition.
Not sure why they listed this as a test condition because the common range is 0.5 to 3.6V.
I believe this is type-o in the test conditions.
Regards,