Other Parts Discussed in Thread: LM2903B
Hi team!
The customer wanted to use LM2903B-Q1 to converter voltage to high and low level voltage. IN+ voltage is from 11V to 16V, IN- voltage is 13.33V, and the supply voltage is 16V. I know that IN+ and IN- voltage should be from ground to VCC–1.5V as below. But I use TINA to simulate, if the IN+ voltage is 16V, equals to the supply voltage 16V and the output voltage is about 8V. While the IN+ voltage is 11V, the output voltage is 0V. The customer's need is to differentiate between 11V and 16V and turn it into high and low levels. Now the output matches the customer's needs. But this usage scenario does not match the normal operation of the comparator. Is this a risk? Will there be any other impact on the output of the comparator?
