I have a datasheet with the following parameter:
Common-mode input voltage range
What is this?
Values:
Min 0V
Max VDD-1.5V
Common-mode input voltage range
What is this?
Values:
Min 0V
Max VDD-1.5V
https://www.analog.com/en/resources/glossary/input_cmvr_v.html
In your case the op amp can be fed with input voltages (at non-inverting and inverting input pins) related to supply between between 0 V (or negative supply) and positive supply minus 1.5 V.
If input goes outside this range the op amp will not behave as expected.
In your case the op amp can be fed with input voltages (at non-inverting and inverting input pins) related to supply between between 0 V (or negative supply) and positive supply minus 1.5 V.
If input goes outside this range the op amp will not behave as expected.
CMVR is the range of common mode signal for which the amplifier's operation remains linear
But input voltage goes beyond this.
But not stay linear. If I understand it.
But input voltage goes beyond this.
But not stay linear. If I understand it.
An example: TL071/72/74 is known and feared for its phase reversal when input voltage falls below 3 V above negative rail (as specified as common mode input range).
Here is a scope shot of a TL072 as a Voltage follower with too much input. Top waveform is the input, bottom waveform is the output. When the input goes too low, the current source for the input JFETs is cutoff and the output slams the positive rail.
